DE69223296D1 - Bilderzeugungsgerät - Google Patents
BilderzeugungsgerätInfo
- Publication number
- DE69223296D1 DE69223296D1 DE69223296T DE69223296T DE69223296D1 DE 69223296 D1 DE69223296 D1 DE 69223296D1 DE 69223296 T DE69223296 T DE 69223296T DE 69223296 T DE69223296 T DE 69223296T DE 69223296 D1 DE69223296 D1 DE 69223296D1
- Authority
- DE
- Germany
- Prior art keywords
- imaging device
- imaging
- 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
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
- H04N1/405—Halftoning, i.e. converting the picture signal of a continuous-tone original into a corresponding signal showing only two levels
- H04N1/4055—Halftoning, i.e. converting the picture signal of a continuous-tone original into a corresponding signal showing only two levels producing a clustered dots or a size modulated halftone pattern
- H04N1/4056—Halftoning, i.e. converting the picture signal of a continuous-tone original into a corresponding signal showing only two levels producing a clustered dots or a size modulated halftone pattern the pattern varying in one dimension only, e.g. dash length, pulse width modulation [PWM]
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Color, Gradation (AREA)
- Facsimile Image Signal Circuits (AREA)
- Dot-Matrix Printers And Others (AREA)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3202894A JPH0548857A (ja) | 1991-08-13 | 1991-08-13 | 画像形成装置 |
JP4053714A JPH05260288A (ja) | 1992-03-12 | 1992-03-12 | 画像形成装置 |
JP4132590A JPH05328108A (ja) | 1992-05-25 | 1992-05-25 | 画像形成方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
DE69223296D1 true DE69223296D1 (de) | 1998-01-08 |
DE69223296T2 DE69223296T2 (de) | 1998-04-23 |
Family
ID=27295045
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69223296T Expired - Fee Related DE69223296T2 (de) | 1991-08-13 | 1992-07-29 | Bilderzeugungsgerät |
Country Status (3)
Country | Link |
---|---|
US (1) | US5467422A (de) |
EP (1) | EP0527574B1 (de) |
DE (1) | DE69223296T2 (de) |
Families Citing this family (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5436644A (en) * | 1991-09-18 | 1995-07-25 | Konica Corporation | Image forming method |
US5666213A (en) * | 1992-11-24 | 1997-09-09 | Ricoh Company, Ltd. | Image data processing system and method realizing fine image with simple construction/procedure |
JP3040896B2 (ja) * | 1993-06-16 | 2000-05-15 | シャープ株式会社 | 画像処理装置 |
US6115148A (en) * | 1994-06-02 | 2000-09-05 | Canon Kabushiki Kaisha | Image processing apparatus |
US6020908A (en) * | 1994-09-15 | 2000-02-01 | Apple Computer, Inc. | Method and structure for modulation in a laser printer |
JP3119150B2 (ja) * | 1995-02-02 | 2000-12-18 | 富士ゼロックス株式会社 | 画像処理装置および画像処理方法 |
JP3223803B2 (ja) * | 1995-08-23 | 2001-10-29 | 富士ゼロックス株式会社 | 画像処理装置 |
JPH09150552A (ja) * | 1995-11-30 | 1997-06-10 | Toshiba Corp | 画像形成装置 |
US5802212A (en) * | 1996-02-09 | 1998-09-01 | Seiko Epson Corporation | Clustered-dot dither with white-fleck suppression |
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 |
US5729634A (en) * | 1996-03-29 | 1998-03-17 | Xerox Corporation | Document processing system for enhancing halftone images including multiple centered dots |
US5689344A (en) * | 1996-04-29 | 1997-11-18 | Xerox Corporation | Mitigation of tenting deletions in color xerographic printers |
US5946454A (en) * | 1996-08-15 | 1999-08-31 | Seiko Epson Corporation | Image enhancement during half-toning using low-pass and high-pass filtering |
US6072272A (en) * | 1998-05-04 | 2000-06-06 | Motorola, Inc. | Color flat panel display device |
JP3244081B2 (ja) | 1999-02-25 | 2002-01-07 | セイコーエプソン株式会社 | 電子写真装置及び電子写真の画像処理方法 |
JP2000261672A (ja) * | 1999-03-09 | 2000-09-22 | Fuji Xerox Co Ltd | 画像符号化装置 |
US7301552B2 (en) * | 2001-09-10 | 2007-11-27 | Oki Data Corporation | Image forming apparatus with printing data correction arrangement |
JP2004066712A (ja) * | 2002-08-08 | 2004-03-04 | Minolta Co Ltd | 画像形成装置および画像形成方法 |
JP4498291B2 (ja) * | 2005-03-11 | 2010-07-07 | キヤノン株式会社 | 画像形成装置 |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61199374A (ja) * | 1985-02-28 | 1986-09-03 | Ricoh Co Ltd | ドツト補正のレ−ザプリンタ |
US4800442A (en) * | 1985-08-15 | 1989-01-24 | Canon Kabushiki Kaisha | Apparatus for generating an image from a digital video signal |
US4870499A (en) * | 1985-08-29 | 1989-09-26 | Canon Kabushiki Kaisha | Image processing apparatus |
EP0212990B1 (de) * | 1985-08-29 | 1992-10-28 | Canon Kabushiki Kaisha | Bildverarbeitungsvorrichtung |
US5251267A (en) * | 1985-08-30 | 1993-10-05 | Canon Kabushiki Kaisha | Image recording apparatus for processing image data based on characteristics of image data |
US4897734A (en) * | 1985-10-28 | 1990-01-30 | Canon Kabushiki Kaisha | Image processing apparatus |
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 |
US4782398A (en) * | 1986-02-14 | 1988-11-01 | Canon Kabushiki Kaisha | Image processing apparatus |
EP0717550A3 (de) * | 1986-02-14 | 1996-10-09 | Canon Kk | Bildverarbeitungsgerät |
US4868684A (en) * | 1986-04-03 | 1989-09-19 | Canon Kabushiki Kaisha | Image processing apparatus |
JP2556486B2 (ja) * | 1986-11-14 | 1996-11-20 | キヤノン株式会社 | フィルム読取装置 |
JP2589295B2 (ja) * | 1986-11-14 | 1997-03-12 | キヤノン株式会社 | 画像形成装置 |
EP0760578B1 (de) * | 1989-10-02 | 2003-04-02 | Canon Kabushiki Kaisha | Bilderzeugungsgerät und Modulationsverfahren |
US5172132A (en) * | 1990-03-06 | 1992-12-15 | Konica Corporation | Digital image forming device and method for forming an image from a plurality of dots |
US5050000A (en) * | 1990-05-21 | 1991-09-17 | Eastman Kodak Company | Error diffusion of subcells in digital halftoning |
US5265196A (en) * | 1991-08-30 | 1993-11-23 | Konica Corporation | Image forming apparatus |
-
1992
- 1992-07-28 US US07/920,852 patent/US5467422A/en not_active Expired - Fee Related
- 1992-07-29 DE DE69223296T patent/DE69223296T2/de not_active Expired - Fee Related
- 1992-07-29 EP EP92306901A patent/EP0527574B1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE69223296T2 (de) | 1998-04-23 |
EP0527574B1 (de) | 1997-11-26 |
US5467422A (en) | 1995-11-14 |
EP0527574A1 (de) | 1993-02-17 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee |