View source for Engineering:HP ScanJet

{{Infobox computer hardware
| name=ScanJet
| image=File:HP Scanjet 8200 Scanner C9938A 1.jpg
| caption=ScanJet 8200
| type=[[Social:Image scanner|Image scanner]] (flatbed, sheetfed)
| manufacturer={{ubl|[[Company:Hewlett-Packard|Hewlett-Packard]] (1987–2015)|[[Company:HP Inc.|HP Inc.]] (since 2015)}}
| introduced={{start date and age|1987|03|02}}
| connection={{flatlist|
* [[Engineering:SCSI|SCSI]]
* [[Parallel port|parallel]]
* [[Engineering:USB|USB]]
}}
| dpi=300–4800
}}
'''ScanJet''' is a line of [[Engineering:Desktop computer|desktop]] flatbed and sheetfed [[Social:Image scanner|image scanner]]s originally sold by [[Company:Hewlett-Packard|Hewlett-Packard]] (HP), later [[Company:HP Inc.|HP Inc.]], since 1987. It was the first commercially widespread image scanner on the market, as well as one of the first scanners aimed at the small office/home office market.<ref name=visions>{{cite journal | date=August 1994 | url=https://books.google.com/books?id=U88jAQAAMAAJ&q=%22scanjet+was+the%22 | title=Peripheral Visions | journal=Computer Buyer's Guide and Handbook | publisher=Computer Information Publishing | volume=12 | issue=8 | pages=33–47 | via=Google Books}}</ref><ref name=sj5370>{{cite web | last=Williams | first=Simon | date=September 5, 2001 | url=https://www.zdnet.com/product/hp-scanjet-5370c/ | title=Hewlett-Packard ScanJet 5370C | work=ZDNET | publisher=Ziff-Davis | archive-url=https://web.archive.org/web/20240416211610/https://www.zdnet.com/product/hp-scanjet-5370c/ | archive-date=April 16, 2024}}</ref> It was originally designed to complement the company's LaserJet series of laser printers and allowed HP to compete in the burgeoning [[Software:Desktop publishing|desktop publishing]] market of the 1980s.

The grayscale-only ScanJet Plus, co-developed with [[Company:Canon Inc.|Canon]] and released in 1989, was a massive commercial success and had a wide influence in scanner design. For almost a decade at the low end of the market, the ScanJet Plus was a [[Engineering:De facto standard|''de facto'' standard]] for the specifications of scanner hardware. Starting in 1991, models of ScanJet were released that could scan in full color.

Updates to the ScanJet line have been sporadic since the 2010s.<ref name=s5>{{cite web | last=Harrel | first=William | date=September 6, 2022 | url=https://www.pcmag.com/reviews/hp-scanjet-enterprise-flow-5000-s5 | title=HP ScanJet Enterprise Flow 5000 s5 Review | work=PCMag | publisher=Ziff-Davis | archive-url=https://web.archive.org/web/20220906231416/https://www.pcmag.com/reviews/hp-scanjet-enterprise-flow-5000-s5 | archive-date=September 6, 2022}}</ref>

==Models==
===1st generation===
[[Company:Hewlett-Packard|Hewlett-Packard]] (HP) developed the first ScanJet in the mid-1980s at their printer division in Boise, Idaho.<ref name=boise>{{cite web | date=2010 | url=https://www.hpmuseum.net/divisions.php?did=9 | title=Division name: Boise | work=HP Computer Museum | publisher=WordSong Communications | archive-url=https://web.archive.org/web/20110719024424/https://www.hpmuseum.net/divisions.php?did=9 | archive-date=July 19, 2011}}</ref><ref name=beeler>{{cite journal | last=Beeler | first=Jeffrey | date=March 2, 1987 | url=https://books.google.com/books?id=SZ4AAehqfn0C&pg=PA4 | title=HP revamps LaserJet Plus, adds high-end unit | journal=Computerworld | publisher=CW Communications | volume=XXI | issue=9 | page=4 | via=Google Books | access-date=September 3, 2024 | archive-date=September 4, 2024 | archive-url=https://web.archive.org/web/20240904001538/https://books.google.com/books?id=SZ4AAehqfn0C&pg=PA4#v=onepage&q&f=false | url-status=live }}</ref> The ScanJet was released on March 2, 1987.<ref name=due>{{cite journal | last=Bridges | first=Linda | date=August 11, 1987 |id={{Gale|A5100911}} | title=HP's imaging software for ScanJet due out next month | journal=PC Week | publisher=Ziff-Davis | volume=4 | issue=32 | page=11 }}</ref><ref>{{cite news | last=Staff writer | date=March 3, 1987 | url=https://www.proquest.com/docview/302127053/ | title=Business Briefs | work=The San Francisco Chronicle | page=26 | id={{ProQuest|302127053}} }}</ref> It was designed to compliment to their LaserJet series, which was the first commercially successful line of laser printers ever released;<ref>{{cite journal | last=Staff writer | date=August 1989 |id={{Gale|A7636956}} | title=Hewlett-Packard ScanJet Plus | journal=Which Computer? | publisher=EMAP Media | pages=61 ''et seq'' }}</ref> it was introduced in 1984 and also developed at Boise.<ref name=beeler /><ref name=due /> The ScanJet was developed to round out the company's [[Software:Desktop publishing|desktop publishing]] products; desktop publishing was a nascent industry at the time, for which HP had a printing device, the LaserJet, but no imaging device to pair with it.<ref>{{cite journal | last=Schuster | first=Jonathan | date=June 16, 1987 |id={{Gale|A4986217}} | title=Scanner market prognosis is healthy growth | journal=PC Week | publisher=Ziff-Davis | volume=4 | issue=24 | pages=108 ''et seq'' }}</ref>

The original ScanJet has a 8.5-by-13-inch platen and is capable of scanning at a maximum resolution of 300&nbsp;[[Dots per inch|dpi]] in 4-bit [[Grayscale|grayscale]] (16&nbsp;shades of gray).<ref name=pcmagreview1>{{cite journal | last=David | first=Stephen Randy | date=October 13, 1987 | url=https://books.google.com/books?id=r7jD_sikrJQC&pg=PA251 | title=HP ScanJet | journal=PC Magazine | publisher=Ziff-Davis | volume=6 | issue=17 | pages=251–252 | via=Google Books | access-date=September 3, 2024 | archive-date=September 4, 2024 | archive-url=https://web.archive.org/web/20240904001539/https://books.google.com/books?id=r7jD_sikrJQC&pg=PA251#v=onepage&q&f=false | url-status=live }}</ref><ref name=pcmagreview2>{{cite journal | last=Rose | first=Philip F.&nbsp;H. | date=March 28, 1989 | url=https://books.google.com/books?id=9pqsf7P3bZUC&pg=PA222 | title=Hewlett Packard Co. | journal=PC Magazine | publisher=Ziff-Davis | volume=8 | issue=6 | pages=222, 226 | via=Google Books | access-date=September 3, 2024 | archive-date=September 4, 2024 | archive-url=https://web.archive.org/web/20240904001613/https://books.google.com/books?id=9pqsf7P3bZUC&pg=PA222#v=onepage&q&f=false | url-status=live }}</ref> The original ScanJet has an internal [[Raster image processor|raster image processor]] (RIP), controlled by software, capable of outputting the scan to the computer in raw 4-bit grayscale, in [[Halftone|halftone]] dither, or in 1-bit monochrome.<ref name=pcmagreview1 /><ref name=sum1>{{cite journal | last=Staff writers | date=October 13, 1987 | url=https://books.google.com/books?id=r7jD_sikrJQC&pg=PA224 | title=Summary of Features: Graphics-Only Scanners | journal=PC Magazine | publisher=Ziff-Davis | volume=6 | issue=17 | pages=218–225 | via=Google Books | access-date=September 3, 2024 | archive-date=September 4, 2024 | archive-url=https://web.archive.org/web/20240904001645/https://books.google.com/books?id=r7jD_sikrJQC&pg=PA224#v=onepage&q&f=false | url-status=live }}</ref> HP sold the original ScanJet with an optional [[Engineering:Automatic document feeder|automatic document feeder]] (ADF) attachment, intended for scanning multiple-page [[Document imaging|documents]] rapidly; the ADF attachment supports up to legal-sized documents.<ref name=pcmagreview2 /><ref>{{cite journal | last=Bridges | first=Linda | date=March 3, 1987 |id={{Gale|A4683850}} | title=New HP laser printer compact, less expensive | journal=PC Week | publisher=Ziff-Davis | volume=4 | issue=9 | pages=1 ''et seq'' }}</ref> Customers were forced to buy a proprietary interface card that allowed the ScanJet to connect to an IBM PC or compatible desktop computer for nearly US$500 extra.<ref name=pcmagreview1 /> HP initially targeted the ScanJet for the PC platform only,<ref name=patience /> but in June 1988, the company released driver software and an application suite for the Macintosh platform supporting the ScanJet.<ref>{{cite journal | last=DuBlois | first=Peggy | date=June 7, 1988 |id={{Gale|A6739623}} | title=HP to release kit for scanning images on a Mac | journal=PC Week | publisher=Ziff-Davis | volume=5 | issue=23 | page=4 }}</ref>

===ScanJet Plus===
The original ScanJet sold very well for HP,<ref name=patience>{{cite journal | last=Deagon | first=Brian | date=May 1, 1988 |id={{Gale|A6362030}} | title=Optical scanners: Patience has finally paid off | journal=Electronic Business | publisher=Reed Business Information | volume=14 | issue=9 | pages=93 ''et seq'' }}</ref> with ''PC Week'' calling it a "mammoth succes[s]" six months after its initial release.<ref>{{cite journal | last=Pepper | first=Jon | date=October 27, 1987 |id={{Gale|A6015320}} | title=HP portables impressive, but not flawless | journal=PC Week | publisher=Ziff-Davis | volume=4 | issue=43 | pages=119 ''et seq'' }}</ref> By the beginning of 1988, the ScanJet had accounted 27&nbsp;percent of all scanner sales in terms of dollar volume, per Gartner Dataquest.<ref>{{cite journal |id={{Gale|A6172276}} |last1=Bannister |first1=Hank |title=Mac market proving receptive to scanner use |journal=PC Week |date=12 January 1988 |volume=5 |issue=2 |pages=94–96 }}</ref> [[Company:Canon Inc.|Canon]]'s IX-12 had heretofore been the most popular scanner for the PC platform, but by 1989 the ScanJet had caught up in terms of sales and third-party software support.<ref name=pcmagreview2 /> That year, Canon and HP collaborated on the design for the follow-up ScanJet Plus, released in February 1989.<ref>{{cite journal | last=Chin-Leong | first=Kathy | date=March 1989 |id={{Gale|A7334983}} | title=Hewlett-Packard Unwraps the ScanJet Plus | journal=PC/Computing | publisher=Ziff-Davis | volume=2 | issue=3 | page=37 }}</ref><ref name=scanjetunlimited>{{cite book | last=Dickman | first=Chris | author2=Salvatore Parascandolo | author3=Steve Roth | date=1990 | url=https://archive.org/details/scanjetunlimited00dick | title=ScanJet Unlimited | publisher=Peachpit Press | pages=iii–iv | isbn=9780938151098 | via=the Internet Archive}}</ref> The scanning engine of the ScanJet Plus reused Canon's design for the IX-30F, while Hewlett-Packard designed the rest of the hardware as well as the support software.<ref name=workhorses>{{cite journal | last=Pastrick | first=Greg | date=August 1991 | url=https://books.google.com/books?id=JkmqysqcLI0C&pg=PT320 | title=Nine Gray-Scale Workhorses | journal=PC Magazine | publisher=Ziff-Davis | volume=10 | issue=14 | pages=307–358 | via=Google Books | access-date=September 3, 2024 | archive-date=September 4, 2024 | archive-url=https://web.archive.org/web/20240904002202/https://books.google.com/books?id=JkmqysqcLI0C&pg=PT320#v=onepage&q&f=false | url-status=live }}</ref>{{rp|314}} The ScanJet bumped the [[Engineering:Color depth|bit depth]] up to 8&nbsp;bits, or 256&nbsp;shades of gray, while retaining the 300-dpi maximum resolution of its predecessor.<ref name=handbook /> The ScanJet Plus could connect directly to any PC that had a bidirectional parallel port—namely the IBM PS/2, which invented that standard for parallel connection<ref name=workhorses />{{rp|318}}—but it otherwise required an optional interface card at additional cost.<ref name=workhorses />{{rp|349}} Like the original ScanJet, the ScanJet Plus also sold with an optional ADF attachment.<ref name=handbook>{{cite book | last=Day | first=Jerry | date=1997 | url=https://books.google.com/books?id=d7vEqAxVZxcC | title=Color Scanning Handbook: Your Guide to Hewlett-Packard ScanJet Color Scanners | publisher=Prentice Hall | pages=18–20 | isbn=9780133572117 | via=Google Books | access-date=September 3, 2024 | archive-date=September 4, 2024 | archive-url=https://web.archive.org/web/20240904002101/https://www.google.com/books/edition/Color_Scanning_Handbook/d7vEqAxVZxcC | url-status=live }}</ref>

The ScanJet Plus had exceptional market uptake and was widely praised in the technology press.<ref>{{cite journal | last=Welsch | first=Erwin K. | date=May 1990 |id={{Gale|A9028397}} | title=The best of '89 from the microcomputer press: Significant DOS hardware and software | journal=Computers in Libraries | publisher=Information Today | volume=10 | issue=5 | pages=13 ''et seq'' }}</ref> It was the first mass-marketed grayscale scanner for desktop computers and was influential in bringing the cost of the average scanner down from the multiple thousands of dollars to the sub-$2000 range.<ref name=visions /><ref name=scanjetunlimited /> By 1991, the ScanJet Plus had become a [[Engineering:De facto standard|''de facto'' standard]] for scanner hardware, with new competing scanners boasting compatibility with the ScanJet Plus (in terms of feature set and [[API]] commands sent to DOS and [[Software:Microsoft Windows|Windows]] software).<ref name=workhorses />{{rp|314}}<ref>{{cite journal | last=Staff writer | date=May 14, 1990 |id={{Gale|A8446130}} | title=AVR scanner boasts ScanJet compatibility at competitive price | journal=PC Week | publisher=Ziff-Davis | volume=7 | issue=19 | page=20 }}</ref> ScanJet Plus–compatibility would remain the lowest-common denominator for numerous scanners on the market for nearly a decade, until the maturation of the [[Software:TWAIN|TWAIN]] API for scanners occurred in the late 1990s.<ref>{{cite journal | last=Marshall | first=Gregg | date=February 1997 |id={{ProQuest|210944946}} | title=Low-cost Scanning Options: Part 2 | journal=Agency Sales | publisher=Manufacturers' Agents National Association | volume=27 | issue=2 | pages=40–43 }}</ref>{{rp|40}} Even by 1996, the ScanJet Plus remained popular on the reseller market.<ref>{{cite journal | last=Brownstein | first=Mark | date=June 17, 1996 |id={{ProQuest|227486639}} | title=HP pummels rivals | journal=Computer Reseller News | publisher=CMP Publications | pages=64, 66 }}</ref>{{rp|64}}

===ScanJet IIc, IIcx===
[[File:HP-Scanjet-IIC 05.jpg|thumb|ScanJet IIc with its lid closed. The ScanJet IIc was the first ScanJet capable of scanning in color.]]
[[File:Hp scanjet iicx top.jpg|thumb|upright=0.75|Top view of a ScanJet IIcx]]
In 1990, HP moved research and development of the ScanJet from Boise to Greeley, Colorado.<ref name=boise /><ref>{{cite journal | last=Ferguson | first=Christine | date=February 26, 1990 |id={{ProQuest|398205029}} | title=Hewlett-Packard's Other Board | journal=The Wall Street Journal | publisher=Dow Jones & Company | page=A8 }}</ref> There, the company developed the ScanJet IIc, the first ScanJet capable of scanning in color, released in August 1991.<ref name=handbook /> The ScanJet IIc is capable of scanning up to 24-bit color (about 16.7&nbsp;million colors) at 400&nbsp;dpi and has a platen capable of scanning up to legal paper–sized documents.<ref name=colorful>{{cite journal | last=Poor | first=Alfred | date=October 15, 1991 | url=https://books.google.com/books?id=tSLe3yMjc-AC&pg=PT20 | title=HP's Colorful Entry into the Gray World of Scanners | journal=PC Magazine | publisher=Ziff-Davis | volume=10 | issue=17 | pages=35, 37 | via=Google Books}}</ref><ref name=benson>{{cite journal | last=Benson | first=Eric | date=November 5, 1991 |id={{Gale|A11451832}} | title=ScanJet IIc brightens HP line | journal=MacWeek | publisher=IDG Publications | volume=5 | issue=38 | pages=45 ''et seq'' }}</ref> The ScanJet IIc natively supports both the Mac and the PC and has connectors for both 25-pin and 50-pin [[Engineering:SCSI|SCSI]] interfaces.<ref name=benson /> The scanner's RIP is capable of outputing full 24-bit color to the computer, or it can output 1-bit monochrome, 8-bit grayscale, spot color, 8-bit color, and halftones in both color and monochrome.<ref name=colorful /> HP sold an optional ADF for the ScanJet IIc.<ref>{{cite journal | last=Diehl | first=Stanford | author2=David L. Edwards | date=July 1992 | url=https://archive.org/details/199207_byte_magazine_vol_17_07_a_new_world_of_displays_and_image_processing_pdf__mlib/page/234/ | title=Scanning the Spectrum | journal=Byte | publisher=McGraw-Hill | volume=17 | issue=7 | pages=230–242 | via=the Internet Archive}}</ref>{{rp|234}}

Unlike the ScanJet Plus, the ScanJet IIc's scanning engine, as well as its [[Engineering:Charge-coupled device|charge-coupled device]] (CCD) imaging sensor, were designed entirely in-house at HP by a team of dozens.<ref>{{cite journal | last=Gennetten | first=K. Douglas | author2=Michael J. Steinle | date=August 1993 | url=http://www.hpl.hp.com/hpjournal/pdfs/IssuePDFs/1993-08.pdf#page=52 | title=Designing a Scanner with Color Vision | journal=Hewlett-Packard Journal | publisher=Hewlett-Packard Company | volume=44 | issue=4 | pages=52–58 | archive-url=https://web.archive.org/web/20120416105458/http://www.hpl.hp.com/hpjournal/pdfs/IssuePDFs/1993-08.pdf#page=52 | archive-date=April 16, 2012}}</ref> The ScanJet IIc uses an imaging sensor with three linear CCDs to scan a color image in one pass, illuminating the page with two [[Physics:Fluorescent lamp|fluorescent tube lamp]]s.<ref>{{cite journal | last=Poor | first=Alfred | date=January 14, 1992 | url=https://books.google.com/books?id=rNcvvlvuwlIC&pg=PA110 | title=The Best of 1991: HP ScanJet IIc | journal=PC Magazine | publisher=Ziff-Davis | volume=11 | issue=1 | page=144 | via=Google Books | access-date=September 3, 2024 | archive-date=September 4, 2024 | archive-url=https://web.archive.org/web/20240904002110/https://books.google.com/books?id=rNcvvlvuwlIC&pg=PA110#v=onepage&q&f=false | url-status=live }}</ref> Each CCD receives red, green, and blue color information separately using an optical focusing system that focuses the illuminated page onto two [[Physics:Dichroic filter|dichroic filter]]s, which splits the image into the three color components that are read separately by each of the CCDs.<ref>{{cite book |last1=Cawkell |first1=Tony |title=The Multimedia Handbook |date=2003 |publisher=Routledge |isbn=978-1-134-77710-5 |page=28 }}</ref><ref name=liu>{{cite journal |last1=Liu |first1=X |last2=Ehrich |first2=R |title=Analysis of moire patterns in non-uniformly sampled halftones |journal=Image and Vision Computing |date=July 2000 |volume=18 |issue=10 |pages=843–848 |doi=10.1016/S0262-8856(99)00083-9 }}</ref> The CCDs are refreshed periodically to eliminate [[Physics:Low-pass filter|low-pass filter]]ing at the scanner's native 400&nbsp;dpi, increasing vertical resolution. When scanning at lower resolutions, however, the sensor traverses the page at a faster rate, inducing a slight low-pass filter over the image (in an analog fashion) and eliminating [[Aliasing|aliasing]] effects on half-tone images, a beneficial side-effect when scanning halftone-printed originals. The simple [[Linear interpolation|linear interpolation]] of the ScanJet's RIP for producing scans in non-integer scalings of 400&nbsp;dpi {{em|does}} produce aliasing artifacts when scanning certain halftone originals, however.<ref name=liu /> In addition, when scanning at resolutions higher than 150&nbsp;dpi, the ScanJet IIc may send data up to 600&nbsp;KB per second, which on contemporaneous personal computers was a data rate too fast for their [[Disk buffer|disk buffer]]s to handle. Thus, HP designed the ScanJet IIC's stepper motor drive system to occasionally stop the imaging sensor in place and ratchet it back several millimeters to allow for the disk buffer to clear and the scan to restart.<ref name=colorful /><ref>{{cite journal | last=Thompson | first=Tom | date=October 1991 | url=https://archive.org/details/eu_BYTE-1991-10_OCR/page/n53/ | title=Affordable Full-Color Scanning | journal=Byte | publisher=McGraw-Hill | volume=16 | issue=10 | pages=46, 48 | via=the Internet Archive}}</ref> The ratcheting motion prevents gaps and other distortions in the final output by accounting for the [[Physics:Inertia|inertia]] of the image sensor suddenly stopping in place.<ref name=colorful />

In November 1993,<ref name=handbook /> HP introduced the ScanJet IIcx, their replacement for the IIc, featuring a faster stepper motor drive assembly that scans images in grayscale mode at nearly twice the speed of the IIc; the speed of color scans remains the same, however. It was also HP's first ScanJet to ship with an optional transparency adapter, used for scanning slides and film negatives. HP offered the same optional ADF of the IIc for the IIcx; the transparency adapter option was however exclusive to the IIcx and is not backwards-compatible with older ScanJets.<ref>{{cite journal | last=Martin | first=James A. | date=January 1994 |id={{Gale|A14808153}} | title=Hewlett-Packard to ship a better ScanJet | journal=Macworld | publisher=IDG Communications | volume=11 | issue=1 | page=117 }}</ref><ref>{{cite journal | last=Borzo | first=Jeanette | date=November 1, 1993 |id={{Gale|A14609283}} | title=HP speeds up scanning, lowers price with ScanJet IIcx | journal=InfoWorld | publisher=IDG Publications | volume=15 | issue=44 | page=35 }}</ref><ref>{{cite journal | last=Grotta | first=Daniel | date=February 8, 1994 | url=https://books.google.com/books?id=VK6meblp0xsC&pg=PA270 | title=Color Desktop Scanners: In Living Color | journal=PC Magazine | publisher=Ziff-Davis | volume=13 | issue=3 | pages=245–274 | via=Google Books}}</ref>{{rp|270}}

===ScanJet IIp, 3p===
In March 1992, HP introduced the ScanJet IIp, a compact and lower-cost version of the ScanJet Plus that served as its direct replacement.<ref name=caere>{{cite journal | last=Schroeder | first=Eric | date=March 2, 1992 |id={{Gale|A11978361}} | title=HP, Caere to mate OCR software, scanner | journal=PC Week | publisher=Ziff-Davis | volume=9 | issue=9 | pages=37 ''et seq'' }}</ref> It was one of the first scanners on the market to support the TWAIN API, for which Hewlett-Packard was a principal author (as part of the TWAIN Working Group). Like the ScanJet Plus, the ScanJet IIp scans up to 300&nbsp;dpi natively at up to 8-bit grayscale; alternatively it can output 600&nbsp;dpi, interpolated from 300&nbsp;dpi. However, its platen is slightly smaller than the ScanJet Plus', at 8.5&nbsp;by 11.7&nbsp;inches, in order to accommodate the smaller chassis.<ref>{{cite journal | last=Jones | first=Mitt | date=May 26, 1992 | url=https://books.google.com/books?id=hnvCf6WlcYcC&pg=PP48 | title=HP's $1,295 ScanJet IIp Sets New Scanner Standard | journal=PC Magazine | publisher=Ziff-Davis | volume=11 | issue=10 | page=46 | via=Google Books | access-date=September 3, 2024 | archive-date=September 4, 2024 | archive-url=https://web.archive.org/web/20240904002726/https://books.google.com/books?id=hnvCf6WlcYcC&pg=PP48#v=onepage&q&f=false | url-status=live }}</ref> HP bundled the ScanJet IIp with a trial version of Caere's [[Software:OmniPage|OmniPage]], an [[Optical character recognition|optical character recognition]] (OCR) software package. HP collaborated with Caere to fine-tune OmniPage to support HP's new AccuPage algorithms for aiding in OCR. AccuPage comprised an adaptive thresholding filter for improved text detection and a model for detecting columns and tabular data, ensuring the proper flow of text in the resulting OCR text file. AccuPage was later backported to the ScanJet IIc and made an open standard for other OCR vendors to license.<ref name=caere /><ref>{{cite journal | last=Mendelson | first=Edward | date=July 1992 | url=https://books.google.com/books?id=X4152M1DLygC&pg=PA292 | title=AccuPage and AnyPage: Two Technologies for Better OCR | journal=PC Magazine | publisher=Ziff-Davis | volume=11 | issue=13 | page=292 | via=Google Books | access-date=September 3, 2024 | archive-date=September 4, 2024 | archive-url=https://web.archive.org/web/20240904002610/https://books.google.com/books?id=X4152M1DLygC&pg=PA292#v=onepage&q&f=false | url-status=live }}</ref> In October 1994, HP replaced the ScanJet IIp with the ScanJet 3p, capable of scanning twice as fast as the ScanJet IIp at the same resolutions.<ref>{{cite journal | last=Glentworth | first=Jane | date=October 5, 1994 |id={{Gale|A16291263}} | title=HP ships fastest ever workgroup LaserJets | journal=PC User | publisher=EMAP Media | volume=244 | page=10 }}</ref> An optional ADF was available for both the IIp and the 3p.<ref name=handbook /><ref>{{cite journal | last=Valiulis | first=Dave | date=November 1992 |id={{Gale|A12586878}} | title=OmniPage Direct and ScanJet IIp | journal=MacUser | publisher=IDG Communications | volume=8 | issue=11 | pages=75 ''et seq'' }}</ref>

===ScanJet 3c, 4c, 4p===
[[File:HP-Scanjet4C-ADF-C2525B 10.jpg|thumb|ScanJet 4c with the optional [[Engineering:Automatic document feeder|automatic document feeder]] (ADF)]]
HP replaced the ScanJet IIcx with the ScanJet 3c in April 1995.<ref name=handbook /><ref name=quinlan>{{cite journal | last=Quinlan | first=Tom | date=April 24, 1995 |id={{Gale|A16864296}} | title=HP scanner doubles speed | journal=InfoWorld | publisher=IDG Publications | volume=17 | issue=17 | page=8 }}</ref> The ScanJet 3c doubled the scanning speed over the ScanJet IIcx while boosting the maximum color bit depth to 30&nbsp;bits (over 1&nbsp;billion colors) and the maximum grayscale bit depth to 10&nbsp;bits (1024 shades of gray). This boost in bit depth aids in post-processing of images; for example, it allows the user to pull out detail from shadows in dark photographic prints while reducing banding.<ref name=white>{{cite journal | last=White | first=Myles | date=July 27, 1995 |id={{ProQuest|437287290}} | title=Color scanning hits a new level | journal=The Toronto Star | page=B2 }}</ref> It was the cheapest scanner on the market to scan in 30-bit color at the time of its release.<ref name=quinlan /> The ScanJet 3c also increased the maximum native resolution of the scanning element to 600&nbsp;dpi.<ref name=white /><ref>{{cite journal | last=Miastkowski | first=Stan | date=June 1995 |id={{Gale|A16932305}} | title=HP ScanJet 3c sets new highs for color scanners | journal=PC World | publisher=IDG Publications | volume=13 | issue=6 | page=82 }}</ref> The ScanJet's hardware PDI is capable of upscaling the 600-dpi image to simulate up to 4800&nbsp;dpi. Like the IIcx, the ScanJet 3c supports an aftermarket ADF and transparency adapter.<ref name=white /> The ScanJet 3c received a minor update in the form of the ScanJet 4c in November 1995.<ref name=enhances>{{cite journal | last=Quinlan | first=Tom | date=November 13, 1995 |id={{Gale|A17617970}} | title=HP enhances ScanJet scanner line | journal=InfoWorld | publisher=IDG Publications | volume=17 | issue=46 | page=35 }}</ref><ref name=omalley>{{cite journal | last=O'Malley | first=Chris | date=August 1996 |id={{Gale|A18508830}} | title=The future of color scanning | journal=Computer Shopper | publisher=SX2 Media Labs | volume=16 | issue=8 | page=442 }}</ref> It was virtually identical to the 3c, with the bundled DeskScan II scanner control and raster editor application updated for greater [[Software:Windows 95|Windows 95]] support.<ref name=omalley /><ref name=designing>{{cite journal | last=Webb | first=Steven L. | author2=Kevin J. Youngers | author3=Michael J. Steinle | author4=Joe A. Eccher | date=February 1997 | url=https://www.hpl.hp.com/hpjournal/97feb/feb97a8.pdf | title=Design of a 600-Pixel-per-Inch, 30-Bit Color Scanner | journal=Hewlett-Packard Journal | publisher=Hewlett-Packard Company | volume=48 | issue=1 | pages=54–61 | archive-url=https://web.archive.org/web/20030907062352/https://www.hpl.hp.com/hpjournal/97feb/feb97a8.pdf | archive-date=September 7, 2003}}</ref> A cost-reduced version of the ScanJet 4c, the ScanJet 4p, was released in March 1996. It was limited to a maximum resolution of 300&nbsp;dpi and a maximum color bit depth of 24&nbsp;bits.<ref name=handbook /><ref>{{cite journal | last=DeMocker | first=Judy | date=March 25, 1996 |id={{Gale|A18131063}} | title=HP, Apple flatbed scanners share resolution, color, cost | journal=InfoWorld | publisher=IDG Publications | volume=18 | issue=13 | page=33 }}</ref> The ScanJet 4c was sold as the ScanJet 4cse at retailers.<ref>{{cite journal | last=Grunin | first=Lori | date=August 1997 |id={{Gale|A19592774}} | title=HP finally goes NT | journal=Windows Sources | publisher=Ziff-Davis | volume=5 | issue=8 | page=144 }}</ref>

Development of the ScanJet 3c was an involved process, requiring tweaking the sizes of each of the three-strip CCD sensor to correct for [[Physics:Chromatic aberration|chromatic aberration]] caused by uneven path lengths of the filtered red, green, and blue beams of light as they bounce off the mirrors of the optical assembly. HP also had to design and manufacture a bespoke fluorescent tube with three specific phosphors that radiate even, controlled amounts of red, green, and blue light. Late in the development of the 3c, the development team was forced to add a large metal plate to the bottom of the scanner acting as a charge sink to eliminate [[Physics:Electrostatic discharge|electrostatic discharge]] that was causing the scanner's SCSI bus to crash and reset.<ref name=designing />

===ScanJet 4s, 4si, 5s===
Along with the ScanJet 4c, HP also introduced the ScanJet 4s and the ScanJet 4si in November 1995.<ref name=enhances /> These models of ScanJet were HP's first standalone sheetfed scanners that the company had released.<ref>{{cite journal | last=Staff writer | date=January 1996 | url=https://books.google.com/books?id=T2FVAAAAMAAJ | title=This Family Scans Together | journal=Windows Magazine | publisher=CMP Publications | volume=7 | issue=1 | page=78 | via=Google Books}}</ref> The ScanJet 4s was a rebadge of [[Company:Visioneer|Visioneer]]'s [[Software:PaperPort|PaperPort]] scanner, which was a low-cost, slimline sheetfed unit. The ScanJet 4s had a limited feature set compared to the PaperPort but was less expensive.<ref>{{cite journal | last=Mossburg | first=Walter S. | date=November 9, 1995 |id={{ProQuest|398601514}} | title=Contact Customers Make Campaign Fliers, Do Desktop Publishing | journal=The Wall Street Journal | publisher=Dow Jones & Company | page=B1 }}</ref> The ScanJet 4si on the other hand was an original HP design. It was a networked scanner, designed to plug into a Ethernet router (or a [[Token Ring]] router) to send scans across a [[Engineering:Local area network|local area network]] through a [[Software:NetWare|NetWare]] server. The ScanJet 4si had a front-panel LCD for sending scans directly to a system on the network.<ref name=enhances /><ref>{{cite journal | last=Welch | first=Jill | date=January 15, 1996 |id={{Gale|A17799553}} | title=HP's 4Si networked scanner runs your errands | journal=InfoWorld | publisher=IDG Publications | volume=18 | issue=3 | page=78 }}</ref>

In April 1997,<ref name=amongnew>{{cite journal | last=Sprang | first=Kelley | date=April 28, 1997 |id={{Gale|A19403988}} | title=ScanJet 5s among new, affordable scanners | journal=Computer Reseller News | publisher=UBM LLC | issue=733 | page=151 }}</ref> HP released the successor to the ScanJet 4s, the ScanJet 5s, which was designed by HP from the ground-up. Allegedly, HP was unhappy with the original PaperPort's design and grew weary of Visioneer's slow efforts to design a successor model on which HP could base the design of the ScanJet 5s, so HP decided to design it themselves.<ref>{{cite journal | last=Rudich | first=Joe | date=January 1998 |id={{Gale|A20218123}} | title=Scan your way onto the Web | journal=Link-Up | publisher=Information Today | volume=15 | issue=1 | pages=28 ''et seq'' }}</ref> It was HP's first color sheetfed scanner and could scan documents up to 300&nbsp;dpi optically (600&nbsp;dpi interpolated) in 24-bit color.<ref name=amongnew /><ref name=dah>{{cite journal | last=Harvey | first=David A. | date=November 4, 1997 | url=https://books.google.com/books?id=hoP9dkY0guAC&pg=PA234 | title=Hewlett-Packard ScanJet 5s | journal=PC Magazine | publisher=Ziff-Davis | volume=16 | issue=19 | page=234 | via=Google Books | access-date=September 3, 2024 | archive-date=September 4, 2024 | archive-url=https://web.archive.org/web/20240904003659/https://books.google.com/books?id=hoP9dkY0guAC&pg=PA234#v=onepage&q&f=false | url-status=live }}</ref> ''PC Magazine'' reviewed the ScanJet 5s negatively, writing that, "Unfortunately, [HP's] first entry in the color sheet-fed scanner market ... is slow and noisy", outputting mediocre scans.<ref name=dah />

===ScanJet 5p===
[[File:2010-01-18-HP-ScanJet-5p-5.JPG|thumb|ScanJet 5p]]
{{external media
| video1 = {{YouTube|id=KImkZvLOCfA|title=ScanJet 5p playing "Ode to Joy"}} {{small|(by Matej Srebernjak)}}
}}
HP replaced the ScanJet 4p with the ScanJet 5p (sold as the ScanJet 5pse at retailers<ref name=easy />) in January 1997.<ref>{{cite journal | last=Staff writer | date=January 20, 1997 |id={{Gale|A19047978}} | title=Pipeline | journal=InfoWorld | publisher=IDG Communications | volume=19 | issue=3 | page=21 }}</ref> It was sold alongside the ScanJet 4c as a budget offering. To that end, the ScanJet 5p was only capable of scanning up to 300&nbsp;dpi and up to 24-bit color, exactly like its predecessor.<ref name=capture>{{cite journal | last=Stone | first=M. David | date=March 4, 1997 | url=https://books.google.com/books?id=N03JdBfVv0kC&pg=PA177 | title=Capture the Color | journal=PC Magazine | publisher=Ziff-Davis | volume=16 | issue=5 | pages=163–200 | via=Google Books | access-date=September 3, 2024 | archive-date=September 3, 2024 | archive-url=https://web.archive.org/web/20240903073317/https://books.google.com/books?id=N03JdBfVv0kC&pg=PA177 | url-status=live }}</ref>{{rp|174–176}} The ScanJet 5p featured a redesigned chassis, with the addition of a scan button toward the front of the case that launches the bundled PictureScan software and can be set up to initiate a scan without further user intervention.<ref name=hp5p /><ref name=easy>{{cite journal | last=Jantz | first=Richard | date=April 1997 |id={{Gale|A19238464}} | title=HP ScanJet 5pse: Easy fit, easy to use | journal=PC World | publisher=IDG Publications | volume=15 | issue=4 | page=88 }}</ref> HP did not offer an ADF or a transparency scanner as options for the ScanJet 5p, however, because of its budget stature.<ref name=capture /><ref name=hp5p />

The ScanJet 5p originally shipped with a buggy TWAIN driver that caused scans within certain image editors such as [[Software:Adobe Photoshop|Photoshop]] to slow down dramatically compared to scans within HP's DeskJet software. The company later issued a [[Patch (computing)|patched]] driver on their website.<ref name=hp5p>{{cite journal | last=Steinberg | first=Gene | date=April 1997 |id={{Gale|A19167841}} | title=HP ScanJet 5p | journal=MacWorld | publisher=IDG Publications | volume=14 | issue=4 | page=50 }}</ref>

The ScanJet 5p contains a hardware [[Easter egg (media)|Easter egg]]. On a cold power-on, holding down the scan button when the SCSI ID selector on the back is set to "0" will cause the ScanJet to play a rendition of [[Biography:Friedrich Schiller|Schiller]]'s "Ode to Joy", by modulating the speed of the audible stepper motor drive to produce specific pitches.<ref>{{cite journal | last=Bombay | first=Emilio | date=October 29, 1998 |id={{ProQuest|273693106}} | title=Have your eyes checked, too | journal=Fort Worth Star-Telegram | page=3 }}</ref><ref>{{cite journal | last=Colvey | first=Scott | date=April 25, 2000 |id={{ProQuest|329268726}} | title=How you can crack the Easter egg codes | journal=Evening Standard | page=55 }}</ref>

===Network ScanJet 5===
In November 1997, HP iterated on their ScanJet 4si design with the Network ScanJet 5, which connect directly to Ethernet routers (either [[10BASE2|10BASE2]], [[10BASE-T|10BASE-T]], or [[100BASE-T|100BASE-T]]) and interface with servers running either NetWare or Windows NT Server. With a local interface comprising an LCD and a numeric keypad, the ScanJet can be controlled directly to send files to any computer on the network. If it is connected to a network capable of sending packet-switched faxes, the Network ScanJet 5 can act as a sort of fax machine, capable of sending documents to fax machines in the local area network or outside of it. However, it is incapable of receiving faxes directly; this still has to be done either through software on a computer system on the network or through an actual fax machine on the network.<ref>{{cite journal | last=Bliss | first=Jeff | date=February 10, 1997 |id={{ProQuest|227479394}} | title=HP ready to ship scanner that faxes | journal=Computer Reseller News | publisher=CMP Publications | issue=722 | page=12 }}</ref><ref>{{cite book | last=Plumley | first=Sue | date=1999 | url=https://books.google.com/books?id=PWbNpMP4qiIC | title=Home Networking Bible | publisher=IDG Books | page=229 | isbn=9780764533990 | via=Google Books | access-date=September 3, 2024 | archive-date=September 4, 2024 | archive-url=https://web.archive.org/web/20240904003706/https://www.google.com/books/edition/Home_Networking_Bible/PWbNpMP4qiIC | url-status=live }}</ref>

===ScanJet 6000 series===
[[File:HP-Scanjet-6100C 03.jpg|thumb|ScanJet 6100c]]
The ScanJet 6100c, released in August 1997,<ref name=professional>{{cite journal | last=Essick | first=Kristi | date=August 18, 1997 |id={{Gale|A19686449}} | title=HP's ScanJet gets professional treatment | journal=InfoWorld | publisher=IDG Publications | volume=19 | issue=33 | page=29 }}</ref> replaced the ScanJet 4c as HP's high-end flatbed scanner offering.<ref name=bed>{{cite journal | last=O'Malley | first=Chris | date=February 1998 |id={{ProQuest|222938284}} | title=Scanners go to bed | journal=Popular Science | publisher=Times Mirror Magazines | volume=252 | issue=2 | page=31 }}</ref><ref name=sj6100c>{{cite journal | last=Stoller | first=Peter M. | date=March 1998 |id={{Gale|A20186193}} | title=ScanJet 6100C | journal=Macworld | publisher=IDG Publications | volume=15 | issue=3 | page=38 }}</ref> Like the ScanJet 4c (and the ScanJet 3c before it), the ScanJet 6100c has a CCD imaging sensor that scans up to 30-bit color at up to 600&nbsp;dpi optically.<ref name=sj6100c /><ref>{{cite journal | last=Lancaster | first=Don |  date=April 1998 |id={{Gale|A20468746}} | title=All about Quadrature, and more | journal=Electronics Now | publisher=Poptronix | volume=69 | issue=4 | pages=65 ''et seq'' }}</ref> HP sold as optionals an ADF and a transparency adapter for the ScanJet 6100c.<ref name=professional /> As a pack-in feature, HP bundled the ScanJet 6100c with a passive transparency adapter, as a free alternative to the transparency adapter. The device consists of a small, hollow, plastic [[Triangular prism|triangular prism]], with one of the congruent faces cut out to accommodate a single 35-mm slide and a mirror glued to one of the other congruent two faces from the inside. The light from the flatbed's lamp projects through the slide onto the mirror, which bounces back through the slide onto the imaging sensor. This system repurposes the scanner's built-in lamp as a [[Physics:Backlight|backlight]], necessary to scan transparencies on a flatbed.<ref name=sj6100c />

HP replaced the ScanJet 6100c with the ScanJet 6200c in August 1998,<ref name=small>{{cite journal | last=Staff writer | date=August 10, 1998 |id={{Gale|A21019896}} | title=HP scans small-business users | journal=PC Week | publisher=Ziff-Davis | volume=15 | issue=32 | page=33 }}</ref><ref>{{cite book | last=Morris | first=Leslie R. | author2=Gary W. Ives | date=2013 | url=https://books.google.com/books?id=Oq2MAQAAQBAJ | title=Ariel: Internet Transmission Software for Document Delivery | publisher=Taylor & Francis | page=126 | isbn=9781317951995 | via=Google Books | access-date=September 3, 2024 | archive-date=September 4, 2024 | archive-url=https://web.archive.org/web/20240904004213/https://www.google.com/books/edition/Ariel/Oq2MAQAAQBAJ | url-status=live }}</ref> which bumped the color depth to 36&nbsp;bits and added USB connectivity. It was alternatively sold with an ADF built in as the ScanJet 6250c.<ref name=small /><ref>{{cite journal | last=Grotta | first=Sally Weiner | author2=Daniel Grotta | date=October 20, 1998 | url=https://books.google.com/books?id=2Zt0sZTS_0IC&pg=PA179 | title=Desktop Scanners: What's now... what's next | journal=PC Magazine | publisher=Ziff-Davis | volume=17 | issue=18 | pages=146–188 | via=Google Books | access-date=September 3, 2024 | archive-date=September 4, 2024 | archive-url=https://web.archive.org/web/20240904004214/https://books.google.com/books?id=2Zt0sZTS_0IC&pg=PA179#v=onepage&q&f=false | url-status=live }}</ref>{{rp|149}} The ScanJet 6200c was replaced in August 1999 with the ScanJet 6300c, which was alternatively sold as the 6350c with an ADF built-in and as the 6390c with the transparency adapter built-in. It was otherwise identical to the 6200c in terms of performance and quality.<ref>{{cite journal | last=Pepper | first=Jon | date=November 1999 |id={{ProQuest|224630196}} | title=Hewlett-Packard ScanJet 6300c | journal=Presentations | publisher=Bill Communications | volume=13 | issue=11 | page=52 }}</ref>

===ScanJet 5000 series===
[[File:WestLACollege DSC 0094 (38229159976).jpg|thumb|Two ScanJet 5590s set up at a college library]]
The ScanJet 5p was replaced by the ScanJet 5100c in March 1998,<ref name=made>{{cite journal | last=Staff writer | date=March 1998 | url=https://archive.org/details/199803_byte_magazine_vol_23_03_reinventing_the_web_pdf__mlib/page/154/ | title=Scanning Made Easy | journal=Byte | publisher=McGraw-Hill | volume=23 | issue=3 | page=154 | via=the Internet Archive}}</ref> which was HP's first color ScanJet to connect to PCs using a 25-pin enhanced parallel port instead of SCSI.<ref name=iq>{{cite journal | last=Arar | first=Yardena | date=March 1998 |id={{Gale|A20297274}} | title=HP's smart scanner needs a higher IQ | journal=PC World | publisher=IDG Publications | volume=16 | issue=3 | page=98 }}</ref> HP introduced a new technology to its RIP with the ScanJet 5100c, called Intelligent Scanning Technology (IST), which analyzes the scanned image for photo, line-art, and textual elements; identifies their boundaries; and applies post-processing to optimize each region for contrast and sharpness and performs a [[Image tracing|tracing algorithm]] to detected line art—turning them into [[Vector graphics|vector graphics]] and rasterizing the recreated vector as part of the final scan.<ref name=made /><ref>{{cite journal | last=Brown | first=Bruce | date=March 10, 1998 | url=https://books.google.com/books?id=Mptk_eahfJ4C&pg=PA68 | title=Scanning the Entry Level | journal=PC Magazine | publisher=Ziff-Davis | volume=17 | issue=5 | page=68 | via=Google Books | access-date=September 3, 2024 | archive-date=September 4, 2024 | archive-url=https://web.archive.org/web/20240904004217/https://books.google.com/books?id=Mptk_eahfJ4C&pg=PA68#v=onepage&q&f=false | url-status=live }}</ref> IST was reportedly buggy and resulted in distorted output caused by false positives.<ref name=iq /> The ScanJet 5200c, released in 1999, added [[Engineering:USB|USB]] connectivity,<ref name=sj52>{{cite journal | last=Grotta | first=Sally Weiner | author2=Daniel Grotta | date=September 1, 1999 | url=https://books.google.com/books?id=cr7PRid0y5UC&pg=PA214 | title=HP ScanJet 4200C, ScanJet 5200C, OfficeJet R40 | journal=PC Magazine | publisher=Ziff-Davis | volume=18 | issue=15 | pages=213–214 | via=Google Books | access-date=September 3, 2024 | archive-date=September 4, 2024 | archive-url=https://web.archive.org/web/20240904004217/https://books.google.com/books?id=cr7PRid0y5UC&pg=PA214#v=onepage&q&f=false | url-status=live }}</ref> while the ScanJet 5300c, released in 2000, bumped the optical resolution to 1200&nbsp;dpi and the color depth to 42&nbsp;bits.<ref>{{cite journal | last=Merritt | first=Mark | date=July 2000 |id={{ProQuest|224629705}} | title=Snapshots | journal=Presentations | publisher=Bill Communications | volume=14 | issue=7 | page=40 }}</ref> The ScanJet 5370c, released in the same year, came with an optional transparency adapter that replaced the old system (in which the top lid is entirely replaced with the adapter unit) with a smaller, standalone unit that rests on the flatbed itself (with the lid open), plugging into the back of the main ScanJet unit to power its backlight.<ref name=sj5370 />

2001's ScanJet 5470c bumped the optical resolution to 2400&nbsp;dpi and was alternatively sold as the 5490c with the ADF built-in.<ref>{{cite journal | last=Staff writer | date=November 2001 |id={{Gale|A80744633}} | title=HP introduces scanner variety | journal=OfficeSolutions | volume=18 | issue=10 | pages=52 ''et seq'' }}</ref> 2002's ScanJet 5550c was sold exclusively as an ADF-enabled flatbed for the [[Document processing|document processing]] market.<ref>{{cite journal | last=Jantz | first=Richard | date=March 26, 2003 |id={{ProQuest|200793322}} | title=HP Scanjet 5550c | website=PCWorld.com | publisher=IDG Publications }}</ref> The ScanJet 5530, a more traditional image scanner, bumped the color depth to 48&nbsp;bits and included a miniature ADF for 4-by-6-inch prints.<ref>{{cite journal | last=Staff writer | date=November 7, 2003 |id={{ProQuest|202802769}} | title=Peripherals | journal=Computer Dealer News | publisher=Plesman Publications | volume=19 | issue=16 | page=28 }}</ref> 2004's ScanJet 5590 was an ADF–flatbed hybrid similar to the 5550c that increased the maximum number of pages per sheetfed scan from 35&nbsp;pages to 50&nbsp;pages.<ref>{{cite journal | last=Pogue | first=David | date=July 15, 2004 |id={{ProQuest|432823363}} | title=Scanning a Paperless Horizon | journal=The New York Times | page=G1 }}</ref><ref>{{cite journal | last=Staffwriters | date=March 2005 |id={{Gale|A129462065}} | title=Top 10 Scanners | journal=PC World | publisher=IDG Publications | volume=23 | issue=3 | page=139 }}</ref>

===ScanJet Enterprise Flow===
[[File:HP ScanJet Enterprise Flow 7500.jpg|thumb|ScanJet Enterprise Flow 7500]]
The ScanJet Enterprise Flow is a line of networked ADF scanners. Models include:
* ScanJet Enterprise Flow 5000 s2 (2013)<ref>{{cite web | last=Stone | first=M. David | date=December 19, 2013 | url=https://www.pcmag.com/reviews/hp-scanjet-enterprise-flow-5000-s2-sheet-feed-scanner | title=HP Scanjet Enterprise Flow 5000 s2 Sheet-feed Scanner Review | work=PCMag | publisher=Ziff-Davis | archive-url=https://web.archive.org/web/20200815150128/https://www.pcmag.com/reviews/hp-scanjet-enterprise-flow-5000-s2-sheet-feed-scanner | archive-date=August 15, 2020}}</ref>
* ScanJet Enterprise Flow 5000 s4 (2017)<ref name=s5 />
* ScanJet Enterprise Flow 5000 s5 (2022)<ref name=s5 />
* ScanJet Enterprise Flow 7500 (2013)&nbsp;– combination flatbed/ADF<ref>{{cite web | last=Hoffman | first=Tony | date=January 31, 2014 | url=https://www.pcmag.com/reviews/hp-scanjet-enterprise-flow-7500-flatbed-scanner | title=HP Scanjet Enterprise Flow 7500 Flatbed Scanner Review | work=PCMag | publisher=Ziff-Davis | archive-url=https://web.archive.org/web/20240723033854/https://www.pcmag.com/reviews/hp-scanjet-enterprise-flow-7500-flatbed-scanner | archive-date=July 23, 2024}}</ref>
* ScanJet Enterprise Flow 7000 s2 (2013)<ref>{{cite book | date=October 2013 | url=https://h10032.www1.hp.com/ctg/Manual/c03144118.pdf | title=HP Scanjet Enterprise 7000 s2/Flow 7000 s2: User Guide | publisher=Hewlett-Packard Development Company | archive-url=https://web.archive.org/web/20240903235203/https://h10032.www1.hp.com/ctg/Manual/c03144118.pdf | archive-date=September 3, 2024}}</ref>
* ScanJet Enterprise Flow 7000 s3 (2017)<ref>{{cite web | last=Harrel | first=William | date=January 23, 2017 | url=https://www.pcmag.com/reviews/hp-scanjet-enterprise-flow-7000-s3-sheet-feed-scanner | title=HP ScanJet Enterprise Flow 7000 s3 Sheet-Feed Scanner Review | work=PCMag | publisher=Ziff-Davis | archive-url=https://web.archive.org/web/20200808095116/https://www.pcmag.com/reviews/hp-scanjet-enterprise-flow-7000-s3-sheet-feed-scanner | archive-date=August 8, 2020}}</ref>

===ScanJet Pro===
[[File:HP ScanJet Pro 3500 F1.jpg|thumb|ScanJet Pro 3500 F1, flatbed model from 2015<ref name=sjp3500f1 />]]
The ScanJet Pro is a line of flatbed and ADF scanners. Models include:
* ScanJet Pro 1000 Mobile (2013)<ref>{{cite book | date=September 2013 | url=http://nuscoop.nus.edu.sg/content/computers/2013/sep/HP_Printer_Promotion_200913.pdf | title=Experience what your printer can do for you | publisher=Hewlett-Packard Development Company | archive-url=https://web.archive.org/web/20140712063716/http://nuscoop.nus.edu.sg/content/computers/2013/sep/HP_Printer_Promotion_200913.pdf | archive-date=July 12, 2014}}</ref>
* ScanJet Pro 2000 s1 (2017)<ref>{{cite web | last=Harrel | first=William | date=March 24, 2017 | url=https://www.pcmag.com/reviews/hp-scanjet-pro-2000-s1-sheet-feed-scanner | title=HP ScanJet Pro 2000 s1 Sheet-feed Scanner Review | work=PCMag | publisher=Ziff-Davis | archive-url=https://web.archive.org/web/20240502123552/https://www.pcmag.com/reviews/hp-scanjet-pro-2000-s1-sheet-feed-scanner | archive-date=May 2, 2024 | access-date=September 4, 2024 | url-status=live }}</ref>
* ScanJet Pro 2500 f1 (2015)<ref>{{cite web | last=Hoffman | first=Tony | date=February 10, 2016 | url=https://www.pcmag.com/reviews/hp-scanjet-pro-2500-f1-flatbed-scanner | title=HP ScanJet Pro 2500 f1 Flatbed Scanner Review | work=PCMag | publisher=Ziff-Davis | archive-url=https://web.archive.org/web/20240530190755/https://www.pcmag.com/reviews/hp-scanjet-pro-2500-f1-flatbed-scanner | archive-date=May 30, 2024 | access-date=September 4, 2024 | url-status=live }}</ref>
* ScanJet Pro 2600 f1 (2022)<ref>{{cite web | last=Harrel | first=William | date=July 12, 2022 | url=https://www.pcmag.com/reviews/hp-scanjet-pro-2600-f1 | title=HP ScanJet Pro 2600 f1 Review | work=PCMag | publisher=Ziff-Davis | archive-url=https://web.archive.org/web/20240904004727/https://www.pcmag.com/reviews/hp-scanjet-pro-2600-f1 | archive-date=September 4, 2024 | access-date=September 4, 2024 | url-status=live }}</ref>
* ScanJet Pro 3000 s2 (2013)<ref>{{cite web | last=Stone | first=M. David | date=June 21, 2013 | url=https://www.pcmag.com/reviews/hp-scanjet-pro-3000-s2-sheet-feed-scanner | title=HP Scanjet Pro 3000 s2 Sheet-feed Scanner Review | work=PCMag | publisher=Ziff-Davis | archive-url=https://web.archive.org/web/20240530124049/https://www.pcmag.com/reviews/hp-scanjet-pro-3000-s2-sheet-feed-scanner | archive-date=May 30, 2024 | access-date=September 4, 2024 | url-status=live }}</ref>
* ScanJet Pro 3000 s3 (2017)<ref>{{cite web | last=Harrel | first=William | date=April 21, 2017 | url=https://www.pcmag.com/reviews/hp-scanjet-pro-3000-s3-sheet-feed-scanner | title=HP ScanJet Pro 3000 s3 Sheet-Feed Scanner Review | work=PCMag | publisher=Ziff-Davis | archive-url=https://web.archive.org/web/20240904004729/https://www.pcmag.com/reviews/hp-scanjet-pro-3000-s3-sheet-feed-scanner | archive-date=September 4, 2024 | access-date=September 4, 2024 | url-status=live }}</ref>
* ScanJet Pro 3500 f1 (2015)<ref name=sjp3500f1>{{cite web | last=Hoffman | first=Tony | date=February 10, 2016 | url=https://www.pcmag.com/reviews/hp-scanjet-pro-3500-f1-flatbed-scanner | title=HP ScanJet Pro 3500 f1 Flatbed Scanner Review | work=PCMag | publisher=Ziff-Davis | archive-url=https://web.archive.org/web/20231206140157/https://www.pcmag.com/reviews/hp-scanjet-pro-3500-f1-flatbed-scanner | archive-date=December 6, 2023 | access-date=September 4, 2024 | url-status=live }}</ref>
* ScanJet Pro 3600 f1 (2022)<ref>{{cite web | last=Harrel | first=William | date=July 11, 2022 | url=https://www.pcmag.com/reviews/hp-scanjet-pro-3600-f1 | title=HP ScanJet Pro 3600 f1 Review | work=PCMag | publisher=Ziff-Davis | archive-url= | archive-date=}}</ref>
* ScanJet Pro 4500 fn1 (2017)<ref>{{cite web | last=Harrel | first=William | date=May 22, 2017 | url=https://www.pcmag.com/reviews/hp-scanjet-pro-4500-fn1-network-scanner | title=HP ScanJet Pro 4500 fn1 Network Scanner Review | work=PCMag | publisher=Ziff-Davis | archive-url=https://web.archive.org/web/20231207144133/https://www.pcmag.com/reviews/hp-scanjet-pro-4500-fn1-network-scanner | archive-date=December 7, 2023 | access-date=September 4, 2024 | url-status=live }}</ref>
* ScanJet Pro N4000 snw1 (2022)<ref>{{cite web | last=Harrel | first=William | date=September 6, 2022 | url=https://www.pcmag.com/reviews/hp-scanjet-pro-n4000-snw1 | title=HP ScanJet Pro N4000 snw1 Review | work=PCMag | publisher=Ziff-Davis | archive-url= | archive-date=}}</ref>

===Other models===
{{div col|colwidth=30em}}
* ScanJet 200 (2013)&nbsp;– compact, budget flatbed, [[Physics:Contact image sensor|CIS]]<ref>{{cite journal | date=April 2013 | url=https://books.google.com/books?id=ff3LAAAAQBAJ&dq=%22ScanJet+200%22&pg=PA5 | title=Сканеры для любой задачи | trans-title=Scanners for any task | language=Russian | journal=Publish | publisher=LitRes | volume=156 | issue=4 | page=5 | isbn=978-5-457-40311-6 | via=Google Books}}</ref>
* ScanJet 2200c (2001)&nbsp;– budget flatbed, CCD<ref>{{cite journal | last=Sebellin | first=Erik | date=November 19, 2001 |id={{Gale|A81301142}} | title=HP ScanJet 2200c | journal=Fortune | publisher=Time Inc. | volume=144 | issue=10 | page=156 }}</ref>
* ScanJet 2400 (2004)&nbsp;– budget flatbed, CCD<ref>{{cite journal | date=February 1, 2006 |id={{ProQuest|334648370}} | title=Problemas com garantia | journal=O Globo }}</ref>
* ScanJet 3300c (1999)&nbsp;– budget flatbed, CCD<ref>{{cite journal | last=Bedford | first=Mike | date=December 1999 |id={{Gale|A64148898}} | title=Image conscious | journal=PC Direct | publisher=ZDNet | page=202 }}</ref>
* ScanJet 3400c (2000)&nbsp;– budget flatbed, CCD<ref>{{cite journal | last=Dyszel | first=Bill | date=October 1, 2000 |id={{Gale|A64827761}} | title=Scanning for Savings: HP ScanJet 3400C | journal=Computer Shopper | publisher= SX2 Media Labs | page=140 }}</ref>
* ScanJet 3500c (2002)&nbsp;– budget flatbed, CCD<ref>{{cite journal | last=Dabbs | first=Alistair | date=October 2002 |id={{Gale|A100483288}} | title=HP budget A4 scanner | journal=Personal Computer World | publisher= Incisive Media | volume=25 | issue=10 | page=56 }}</ref>
* ScanJet 3670 (2004)&nbsp;– budget flatbed, CCD<ref>{{cite journal | last=France | first=Jasmine | author2=Jeffrey Fuchs | date=July 2004 |id={{Gale|A121207491}} | title=Image makers | journal=Computer Shopper | publisher=SX2 Media Labs | volume=24 | issue=7 | page=131 ''et seq'' }}</ref>
* ScanJet 3770 (2005)&nbsp;– budget flatbed, CCD<ref>{{cite journal | last=Peters | first=Luke | date=February 1, 2005 |id={{Gale|A130574036}} | title=Budget flatbed scanners | journal=Personal Computer World | publisher=Incisive Media | page=60 }}</ref>
* ScanJet 3970 (2004)&nbsp;– budget flatbed, CCD<ref>{{cite journal | last=France | first=Jasmine | author2=Jeffrey Fuchs | date=March 2004 |id={{Gale|A121401949}} | title=Image makers | journal=Computer Shopper | publisher=SX2 Media Labs | volume=24 | issue=3 | page=64 }}</ref>
* ScanJet 4070 (2004)&nbsp;– budget flatbed, CCD<ref>{{cite journal | last=Staff writer | date=August 30, 2004 |id={{Gale|A121446953}} | title=Facilita HP la vida digital | journal=Reforma | publisher=Agencia Reforma | page=5 }}</ref>
* ScanJet 4100c (1998)&nbsp;– budget flatbed, CCD<ref name=small />
* ScanJet 4200c (1999)&nbsp;– budget flatbed, CCD<ref name=sj52 />
* ScanJet 4300c (2000)&nbsp;– budget flatbed, CCD<ref>{{cite journal | last=Grotta | first=Sally Wiener | date=September 19, 2000 | url=https://books.google.com/books?id=heylALTFg4MC&pg=PA168 | title=HP ScanJet 4300C | journal=PC Magazine | publisher=Ziff-Davis | volume=19 | issue=16 | pages=168–169 | via=Google Books}}</ref>
* ScanJet 4370 (2005)&nbsp;– budget flatbed, CCD<ref>{{cite web | last=Staff writers | date=November 30, 2005 | url=https://www.techradar.com/reviews/pc-mac/peripherals/printers-and-scanners/scanners/hp-scanjet-4370-59078/review | title=HP ScanJet 4370 review | work=TechRadar | publisher=Future Publishing | archive-url=https://web.archive.org/web/20240415141026/https://www.techradar.com/reviews/pc-mac/peripherals/printers-and-scanners/scanners/hp-scanjet-4370-59078/review | archive-date=April 15, 2024}}</ref>
* ScanJet 4400c (2001)&nbsp;– budget flatbed, CCD<ref name=sj44>{{cite journal | last=Merritt | first=Mark | date=September 2001 |id={{Gale|A78738046}} | title=Hewlett-Packard 4400c and 4470c scanners | journal=Presentations | publisher= Lakewood Media Group | volume=15 | issue=9 | page=18 }}</ref>
* ScanJet 4470c (2001)&nbsp;– budget flatbed, CCD<ref name=sj44 />
* ScanJet 4570c (2002)&nbsp;– budget flatbed, CCD<ref>{{cite journal | last=Currid | first=Cheryl | date=October 17, 2002 |id={{ProQuest|395894027}} | title=Clean out that shoe box, scan in those photos | journal=Houston Chronicle | page=C4 }}</ref>
* ScanJet 7400c (2001)&nbsp;– budget flatbed, dual CCD<ref>{{cite journal | last=Burt | first=Jeffrey | date=March 12, 2001 |id={{Gale|A71578116}} | title=Customizing Resolution | journal=eWeek | publisher=Ziff-Davis | page=37 }}</ref><ref>{{cite web | date=March 22, 2001 | url=https://www.ephotozine.com/article/hp-announce-three-new-flatbed-scanners--270 | title=HP announce three new flatbed scanners | work=ePhotoZine | archive-url=https://web.archive.org/web/20101229140453/https://www.ephotozine.com/article/hp-announce-three-new-flatbed-scanners--270 | archive-date=December 29, 2010}}</ref>
* ScanJet 7650 (2005)&nbsp;– business flatbed/ADF, CCD<ref>{{cite journal | date=July 25, 2005 |id={{Gale|A134397778}} | title=Software & Hardware | journal=Accounting Today | publisher= SourceMedia | volume=19 | issue=13 | page=28 }}</ref>
* ScanJet 8200 (2003)&nbsp;– business flatbed, CCD<ref>{{cite journal | date=April 2003 |id={{Gale|A100909882}} | title=Hewlett-Packard | journal=Advanced Imaging | publisher= Cygnus Business Media | volume=18 | issue=4 | page=9 }}</ref>
* ScanJet 8250 (2005)&nbsp;– business flatbed/duplex ADF, CCD<ref>{{cite journal | date=October 2005 |id={{Gale|A141437620}} | title=Hewlett-Packard's Scanjet 8250 | journal=THE Journal: Technological Horizons in Education | publisher= 1105 Media | volume=33 | issue=3 | page=53 }}</ref>
* ScanJet 8270 (2006)&nbsp;– business flatbed/duplex ADF, CCD<ref>{{cite journal | date=May 9, 2006 |id={{Gale|A145515884}} | title=HP enhances scanner portfolio with the launch of new market-leading models | journal=Middle East | publisher= SyndiGate Media }}</ref>
* ScanJet 8290 (2003)&nbsp;– professional flatbed, built-in transparency adapter, CCD<ref>{{cite journal | date=June 2003 |id={{Gale|A102822442}} | title=Kofax and HP ink deal | journal=KMWorld | publisher= Information Today | volume=12 | issue=6 | page=7 }}</ref>
* ScanJet 8350 (2006)&nbsp;– business flatbed/ADF, CCD<ref name=deluge>{{cite journal | last=Miles | first=J.&nbsp;B. | date=June 12, 2006 |id={{Gale|A149508575}} | title=Dealing with datadeluge | journal=Government Computer News | publisher= 1105 Media | volume=25 | issue=15 | pages=18 ''et seq'' }}</ref>
* ScanJet 8390 (2006)&nbsp;– business flatbed/ADF, CCD<ref name=deluge />
* ScanJet G2410 (2007)&nbsp;– budget flatbed, dual CCD<ref>{{cite book | date=August 2007 | url=https://www.yumpu.com/en/document/view/48299349/hp-scanjet-g2410-flatbed-scanner | title=HP Scanjet G2410 Flatbed Scanner | publisher=Hewlett-Packard Development Company | via=Yumpu}}</ref>
* ScanJet G3110 (2009)&nbsp;– budget flatbed, CCD<ref>{{cite journal | last=Galbraith | first=James | date=March 2010 |id={{Gale|A231610398}} | title=From paper to pixels: How to find the scanner that's right for you | journal=Macworld | publisher=IDG Publications | volume=27 | issue=3 | page=45 ''et seq'' }}</ref>
* ScanJet G4010 (2008)&nbsp;– professional flatbed, built-in transparency adapter, CCD<ref>{{cite book | date=July 2008 | url=https://aosi.us/wp-content/uploads/2013/09/HP-Scanjet-G4010-Photo-Scanner-brochure.pdf | title=HP Scanjet G4010 Photo Scanner | publisher=Hewlett-Packard Development Company}}</ref>
* ScanJet G4050 (2006)&nbsp;– professional ADF, built-in transparency adapter, CCD<ref>{{cite web | last=Grunin | first=Lori | date=January 5, 2007 | url=https://www.cnet.com/reviews/hp-scanjet-g4050-review/ | title= HP Scanjet G4050 review | work=CNET | publisher=CBS Interactive | archive-url=https://web.archive.org/web/20240525031251/https://www.cnet.com/reviews/hp-scanjet-g4050-review/ | archive-date=May 25, 2024}}</ref>
* ScanJet N6310 (2009)&nbsp;– professional flatbed/ADF, built-in transparency adapter, CCD<ref>{{cite web | last=Williams | first=Simon | date=April 20, 2009 | url=https://www.itpro.com/610583/hp-scanjet-n6310-review | title=HP ScanJet N6310 review | work=ITPro | publisher=Future Publishing | archive-url=https://web.archive.org/web/20220924230708/https://www.itpro.com/610583/hp-scanjet-n6310-review | archive-date=September 24, 2022}}</ref>
* ScanJet N6350 (2009)&nbsp;– business flatbed/ADF, built-in transparency adapter, networked, CCD<ref>{{cite book | date=2009 | url=https://www.scantastik.com/hardware/hp-scanners/pdfs/sj-n6350-specs.pdf | title=HP Scanjet N6350 Networked Document Flatbed Scanner | publisher=Hewlett-Packard Development Company}}</ref>
* Scanjet N7710 (2007)&nbsp;– business duplex ADF, CCD<ref>{{cite book | date=October 2007 | url=https://www.aosi.us/wp-content/uploads/2013/09/HP-Scanjet-N7710-Document-Sheet-feed-Scanner-brochure.pdf | title=HP Scanjet N7710 Document Sheet-feed Scanner | publisher=Hewlett-Packard Development Company}}</ref>
* ScanJet N8420 (2007)&nbsp;– business flatbed/duplex ADF (25&nbsp;{{abbr|ppm|pages per minute}}), CCD<ref name=sjn84>{{cite book | date=October 2007 | url=https://www.rentfusion.com/wp-content/uploads/2017/01/HP-Scanjet-N8460-PDF.pdf | title=HP Scanjet N8400 Scanner Series | publisher=Hewlett-Packard Development Company}}</ref>
* ScanJet N8460 (2007)&nbsp;– business flatbed/duplex ADF (35&nbsp;{{abbr|ppm|pages per minute}}), CCD<ref name=sjn84 />
{{div col end}}

==References==
{{reflist|colwidth=30em}}

==External links==
* {{Official website|https://www.hp.com/us-en/printers/scanners.html}}

{{HP}}
{{Hewlett-Packard}}

[[Category:Image scanners]]

{{Sourceattribution|HP ScanJet}}