DE69515232D1 - Punktdruck zwecks verbesserter Graphik - Google Patents

Punktdruck zwecks verbesserter Graphik

Info

Publication number
DE69515232D1
DE69515232D1 DE69515232T DE69515232T DE69515232D1 DE 69515232 D1 DE69515232 D1 DE 69515232D1 DE 69515232 T DE69515232 T DE 69515232T DE 69515232 T DE69515232 T DE 69515232T DE 69515232 D1 DE69515232 D1 DE 69515232D1
Authority
DE
Germany
Prior art keywords
dot printing
improved graphics
graphics
improved
dot
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
DE69515232T
Other languages
English (en)
Other versions
DE69515232T2 (de
Inventor
Stephen K Glass
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hewlett Packard Development Co LP
Original Assignee
Hewlett Packard Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hewlett Packard Co filed Critical Hewlett Packard Co
Application granted granted Critical
Publication of DE69515232D1 publication Critical patent/DE69515232D1/de
Publication of DE69515232T2 publication Critical patent/DE69515232T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/40—Picture signal circuits
    • H04N1/40075—Descreening, i.e. converting a halftone signal into a corresponding continuous-tone signal; Rescreening, i.e. combined descreening and halftoning

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Controls And Circuits For Display Device (AREA)
  • Image Processing (AREA)
DE69515232T 1994-08-16 1995-07-21 Punktdruck zwecks verbesserter Graphik Expired - Fee Related DE69515232T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08/291,230 US5535307A (en) 1994-08-16 1994-08-16 Printing of variable dot sizes dependent upon image density for improved graphics

Publications (2)

Publication Number Publication Date
DE69515232D1 true DE69515232D1 (de) 2000-04-06
DE69515232T2 DE69515232T2 (de) 2000-11-02

Family

ID=23119449

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69515232T Expired - Fee Related DE69515232T2 (de) 1994-08-16 1995-07-21 Punktdruck zwecks verbesserter Graphik

Country Status (3)

Country Link
US (1) US5535307A (de)
EP (1) EP0697783B1 (de)
DE (1) DE69515232T2 (de)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3423491B2 (ja) * 1995-07-28 2003-07-07 キヤノン株式会社 画像処理方法、プリント方法、画像処理装置、プリント装置および表示装置
US5751470A (en) * 1996-03-12 1998-05-12 Lexmark International, Inc. Method for enhanced print quality on print engines with at least one high resolution dimension
US6252677B1 (en) * 1998-05-07 2001-06-26 Xerox Corporation Method and apparatus for rendering object oriented image data using multiple rendering states selected based on imaging operator type
US9299196B2 (en) * 2004-12-22 2016-03-29 Pitney Bowes Inc. Method and system for high speed printing using drop-on demand technology that compensates for droplet satellites
US8191018B1 (en) * 2007-07-17 2012-05-29 Kovio, Inc. Methods and software for printing materials onto a substrate
US8059311B2 (en) * 2008-01-31 2011-11-15 Sharp Laboratories Of America, Inc. Font and line art rendering for multi-bit output devices
US7911646B2 (en) * 2008-01-31 2011-03-22 Sharp Laboratories Of America, Inc. Multilevel halftoning for tint graphic, line art and text rendering

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4193092A (en) * 1978-06-21 1980-03-11 Xerox Corporation Image interpolation system
US4389677A (en) * 1980-12-08 1983-06-21 Ncr Canada Ltd - Ncr Canada Ltee Method and apparatus for removing erroneous elements from digital images
GB2101836B (en) * 1981-07-18 1985-02-20 Linotype Paul Ltd Method for encoding image data
US4437122A (en) * 1981-09-12 1984-03-13 Xerox Corporation Low resolution raster images
US4783838A (en) * 1984-12-26 1988-11-08 Konishiroku Photo Industry Co., Ltd. Image processing method and apparatus therefor
US4742399A (en) * 1985-11-01 1988-05-03 Dainippon Screen Mfg. Co., Ltd. Method of and apparatus for generating high-resolution bilevel image data
DE3641592A1 (de) * 1985-12-06 1987-06-11 Canon Kk Bilddaten-verarbeitungseinrichtung
JPH0832469B2 (ja) * 1988-01-29 1996-03-29 富士通株式会社 ビットマップフォントの横拡大方式
US5361329A (en) * 1988-08-11 1994-11-01 Canon Kabushiki Kaisha Data processing apparatus
US4847641A (en) * 1988-08-16 1989-07-11 Hewlett-Packard Company Piece-wise print image enhancement for dot matrix printers
SG43270A1 (en) * 1989-03-15 1997-10-17 Canon Kk Output apparatus
US4967203A (en) * 1989-09-29 1990-10-30 Hewlett-Packard Company Interlace printing process
JP2647226B2 (ja) * 1990-03-23 1997-08-27 沖電気工業株式会社 ドットパターン圧縮方法及び伸長方法
JP2861251B2 (ja) * 1990-05-12 1999-02-24 ブラザー工業株式会社 印字装置
US5193008A (en) * 1990-11-07 1993-03-09 Dp-Tek, Inc. Interleaving vertical pixels in raster-based laser printers
AU647208B2 (en) * 1990-11-26 1994-03-17 Sharp Kabushiki Kaisha Image recording apparatus for providing high quality image
US5270728A (en) * 1991-04-17 1993-12-14 Hewlett-Packard Company Raster imaging device speed-resolution product multiplying method and resulting pixel image data structure
JP3003318B2 (ja) * 1991-09-18 2000-01-24 セイコーエプソン株式会社 シリアルプリンタ
JP3375158B2 (ja) * 1991-11-28 2003-02-10 株式会社リコー 画像データ処理方法及びその装置
US5387985A (en) * 1993-12-17 1995-02-07 Xerox Corporation Non-integer image resolution conversion using statistically generated look-up tables

Also Published As

Publication number Publication date
DE69515232T2 (de) 2000-11-02
US5535307A (en) 1996-07-09
EP0697783A1 (de) 1996-02-21
EP0697783B1 (de) 2000-03-01

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: HEWLETT-PACKARD CO. (N.D.GES.D.STAATES DELAWARE),

8327 Change in the person/name/address of the patent owner

Owner name: HEWLETT-PACKARD DEVELOPMENT CO., L.P., HOUSTON, TE

8339 Ceased/non-payment of the annual fee