FR2535477B1 - Procede pour produire des points de demi-teinte dans un dispositif d'enregistrement de plaques de demi-teinte - Google Patents
Procede pour produire des points de demi-teinte dans un dispositif d'enregistrement de plaques de demi-teinteInfo
- Publication number
- FR2535477B1 FR2535477B1 FR838317332A FR8317332A FR2535477B1 FR 2535477 B1 FR2535477 B1 FR 2535477B1 FR 838317332 A FR838317332 A FR 838317332A FR 8317332 A FR8317332 A FR 8317332A FR 2535477 B1 FR2535477 B1 FR 2535477B1
- Authority
- FR
- France
- Prior art keywords
- half tint
- points
- recording device
- tint
- producing
- 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 - Lifetime
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
- H04N1/40087—Multi-toning, i.e. converting a continuous-tone signal for reproduction with more than two discrete brightnesses or optical densities, e.g. dots of grey and black inks on white paper
-
- 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
- H04N1/40081—Soft dot halftoning, i.e. producing halftone dots with gradual edges
-
- 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
- H04N1/4058—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 with details for producing a halftone screen at an oblique angle
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Discrete Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Facsimile Image Signal Circuits (AREA)
- Image Processing (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP57188144A JPS5978353A (ja) | 1982-10-28 | 1982-10-28 | 網目版画像記録装置における網点形成方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2535477A1 FR2535477A1 (fr) | 1984-05-04 |
FR2535477B1 true FR2535477B1 (fr) | 1992-05-15 |
Family
ID=16218512
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR838317332A Expired - Lifetime FR2535477B1 (fr) | 1982-10-28 | 1983-10-28 | Procede pour produire des points de demi-teinte dans un dispositif d'enregistrement de plaques de demi-teinte |
Country Status (5)
Country | Link |
---|---|
US (1) | US4543613A (fr) |
JP (1) | JPS5978353A (fr) |
DE (1) | DE3338828C2 (fr) |
FR (1) | FR2535477B1 (fr) |
GB (1) | GB2132847B (fr) |
Families Citing this family (35)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60259062A (ja) * | 1984-06-06 | 1985-12-21 | Oki Electric Ind Co Ltd | フルカラ−記録方法 |
JPH0657049B2 (ja) * | 1984-12-07 | 1994-07-27 | 大日本スクリ−ン製造株式会社 | 網点形成方法 |
US4680625A (en) * | 1984-07-18 | 1987-07-14 | Konishiroku Photo Industry Co., Ltd. | Method and apparatus for multicolor image forming |
FR2571663B1 (fr) * | 1984-10-11 | 1987-01-16 | Matra | Document d'identite difficilement falsifiable et procede de fabrication d'un tel document |
JPS6238658A (ja) * | 1985-08-14 | 1987-02-19 | Hitachi Ltd | 副走査速度の制御方法 |
JPS62177569A (ja) * | 1986-01-31 | 1987-08-04 | Toshiba Corp | 記録装置 |
JPH0683374B2 (ja) * | 1986-02-14 | 1994-10-19 | 富士写真フイルム株式会社 | 網点画像の形成方法 |
JPH0626440B2 (ja) * | 1987-05-26 | 1994-04-06 | 大日本スクリ−ン製造株式会社 | 網点作成装置 |
AU605298B2 (en) * | 1987-05-29 | 1991-01-10 | Digital Equipment Corporation | System for producing dithered images on asymmetric grids |
US5081528A (en) * | 1988-03-10 | 1992-01-14 | Canon Kabushiki Kaisha | Image forming apparatus |
US5253082A (en) * | 1988-03-10 | 1993-10-12 | Canon Kabushiki Kaisha | Image forming apparatus |
EP0334518B1 (fr) * | 1988-03-10 | 1997-10-15 | Canon Kabushiki Kaisha | Appareil pour la formation d'une image |
JP2578947B2 (ja) * | 1988-10-13 | 1997-02-05 | 富士写真フイルム株式会社 | 網点データ作成方法 |
JPH0691621B2 (ja) * | 1988-11-24 | 1994-11-14 | 大日本スクリーン製造株式会社 | 網目版画像記録方法および装置 |
US4928118A (en) * | 1988-12-07 | 1990-05-22 | Westinghouse Electric Corp. | Enhanced resolution electrophotographic-type imaging station |
US5793500A (en) * | 1989-07-20 | 1998-08-11 | Netz; Yoel | Devices and methods for offset and similar printing systems |
US6163382A (en) * | 1989-07-20 | 2000-12-19 | Netz; Yoel | Devices and methods for offset and similar printing systems |
WO1991002426A2 (fr) * | 1989-08-04 | 1991-02-21 | Intergraph Corporation | Visualisation numerique sur ecran d'un angle variable rapide |
EP0427380B1 (fr) * | 1989-11-08 | 1996-03-06 | Adobe Systems Inc. | Procédé pour la production d'images en demi-teintes |
GB9008318D0 (en) * | 1990-04-12 | 1990-06-13 | Crosfield Electronics Ltd | Methods and apparatus for half-tone imaging |
US5323245A (en) * | 1990-09-14 | 1994-06-21 | Minnesota Mining And Manufacturing Company | Perpendicular, unequal frequency non-conventional screen patterns for electronic halftone generation |
US5253084A (en) * | 1990-09-14 | 1993-10-12 | Minnesota Mining And Manufacturing Company | General kernel function for electronic halftone generation |
US5264926A (en) * | 1990-09-14 | 1993-11-23 | Minnesota Mining And Manufacturing Company | Perpendicular, equal frequency non-conventional screen patterns for electronic halftone generation |
US5583660A (en) * | 1990-09-14 | 1996-12-10 | Minnesota Mining And Manufacturing Company | Non-perpendicular, equal frequency non-conventional screen patterns for electronic halftone generation |
US5258832A (en) * | 1990-09-14 | 1993-11-02 | Minnesota Mining And Manufacturing Company | Non-perpendicular, unequal frequency non-conventional screen patterns for electronic halftone generation |
JP2599068B2 (ja) * | 1991-10-24 | 1997-04-09 | 大日本スクリーン製造株式会社 | 網点形成方法 |
GB9205477D0 (en) * | 1992-03-13 | 1992-04-29 | Crosfield Electronics Ltd | Improvements relating to screened images |
US5754218A (en) * | 1992-06-03 | 1998-05-19 | Eastman Kodak Company | Variable dot density printing system using sub-microdot matrixing and a zoom lens |
JP2986292B2 (ja) * | 1992-07-10 | 1999-12-06 | 大日本スクリーン製造株式会社 | 網点形成方法および装置 |
EP0677948B1 (fr) * | 1993-02-10 | 1998-08-26 | Océ Printing Systems GmbH | Appareil pour la production d'image à point de demi-teintes de haute qualité avec un appareil d'enregistrement électrophotographique |
WO1995004665A1 (fr) * | 1993-08-10 | 1995-02-16 | Hardy Business Forms Limited | Donnees imprimees incrustees, procede et appareil afferents |
US5410414A (en) * | 1993-10-28 | 1995-04-25 | Xerox Corporation | Halftoning in a hyperacuity printer |
EP0765748A3 (fr) * | 1995-09-29 | 1997-08-13 | Goss Graphics Systems Inc | Dispositif pour l'alignement d'images dans un système de contrÔle pour une machine à imprimer |
JP4823551B2 (ja) * | 2005-04-08 | 2011-11-24 | 富士フイルム株式会社 | 画像処理方法及び装置並びにこれを備えた画像形成装置 |
US7545537B2 (en) * | 2005-07-29 | 2009-06-09 | Infoprint Solutions Company Llc | Bandless halftone design for multiple beam printers employing non-orthogonal halftones |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1482522A (en) * | 1973-10-02 | 1977-08-10 | Crosfield Electronics Ltd | Exposing scanners for image reproduction |
GB1492740A (en) * | 1973-12-17 | 1977-11-23 | Crosfield Electronics Ltd | Preparation of half-tone images |
DE2739977C3 (de) * | 1977-09-06 | 1981-01-29 | Dr.-Ing. Rudolf Hell Gmbh, 2300 Kiel | Graviervorrichtung zur Herstellung von Druckformen |
EP0047145B1 (fr) * | 1980-09-01 | 1988-03-16 | Crosfield Electronics Limited | Procédé pour la réalisation d'une reproduction en demi-tons |
JPS57120937A (en) * | 1981-01-21 | 1982-07-28 | Dainippon Screen Mfg Co Ltd | Formation of halftone plate image |
-
1982
- 1982-10-28 JP JP57188144A patent/JPS5978353A/ja active Granted
-
1983
- 1983-10-20 US US06/543,911 patent/US4543613A/en not_active Expired - Lifetime
- 1983-10-26 DE DE3338828A patent/DE3338828C2/de not_active Expired - Fee Related
- 1983-10-26 GB GB08328578A patent/GB2132847B/en not_active Expired
- 1983-10-28 FR FR838317332A patent/FR2535477B1/fr not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPH0249592B2 (fr) | 1990-10-30 |
DE3338828C2 (de) | 1994-07-21 |
FR2535477A1 (fr) | 1984-05-04 |
JPS5978353A (ja) | 1984-05-07 |
GB8328578D0 (en) | 1983-11-30 |
DE3338828A1 (de) | 1984-05-03 |
US4543613A (en) | 1985-09-24 |
GB2132847B (en) | 1987-01-28 |
GB2132847A (en) | 1984-07-11 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |