JPH0532220B2 - - Google Patents

Info

Publication number
JPH0532220B2
JPH0532220B2 JP57158238A JP15823882A JPH0532220B2 JP H0532220 B2 JPH0532220 B2 JP H0532220B2 JP 57158238 A JP57158238 A JP 57158238A JP 15823882 A JP15823882 A JP 15823882A JP H0532220 B2 JPH0532220 B2 JP H0532220B2
Authority
JP
Japan
Prior art keywords
contour
printing
same
approximately
gradation value
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
Application number
JP57158238A
Other languages
English (en)
Japanese (ja)
Other versions
JPS58189641A (ja
Inventor
Shoitaa Kaaru
Fuitsushaa Geruharuto
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.)
RAINOTAIPU HERU AG
Original Assignee
RAINOTAIPU HERU AG
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 RAINOTAIPU HERU AG filed Critical RAINOTAIPU HERU AG
Publication of JPS58189641A publication Critical patent/JPS58189641A/ja
Publication of JPH0532220B2 publication Critical patent/JPH0532220B2/ja
Granted 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
    • H04N1/405—Halftoning, i.e. converting the picture signal of a continuous-tone original into a corresponding signal showing only two levels
    • H04N1/4051—Halftoning, i.e. converting the picture signal of a continuous-tone original into a corresponding signal showing only two levels producing a dispersed dots halftone pattern, the dots having substantially the same size

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Facsimile Image Signal Circuits (AREA)
  • Printing Methods (AREA)
  • Manufacture Or Reproduction Of Printing Formes (AREA)
  • Color, Gradation (AREA)
  • Image Analysis (AREA)
JP57158238A 1981-09-12 1982-09-13 製版方法 Granted JPS58189641A (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP81107207A EP0074422B1 (de) 1981-09-12 1981-09-12 Verfahren zur Herstellung von Druckformen mittels unregelmässig verteilter Druckpunkte
DE811072073 1981-09-12

Publications (2)

Publication Number Publication Date
JPS58189641A JPS58189641A (ja) 1983-11-05
JPH0532220B2 true JPH0532220B2 (enExample) 1993-05-14

Family

ID=8187906

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57158238A Granted JPS58189641A (ja) 1981-09-12 1982-09-13 製版方法

Country Status (5)

Country Link
US (1) US4485397A (enExample)
EP (1) EP0074422B1 (enExample)
JP (1) JPS58189641A (enExample)
AT (1) ATE14164T1 (enExample)
DE (1) DE3171227D1 (enExample)

Families Citing this family (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE27522T1 (de) * 1983-07-29 1987-06-15 Hell Rudolf Dr Ing Gmbh Verfahren und einrichtung zum minimieren von fehlern bei der digitalen verarbeitung von elektrischen signalen.
JPH0691608B2 (ja) * 1983-09-02 1994-11-14 株式会社リコー 階調情報処理方法
JPS60157375A (ja) * 1983-12-21 1985-08-17 Fuji Xerox Co Ltd 中間調表現方式
JPS61211076A (ja) * 1985-03-15 1986-09-19 Kyodo Printing Co Ltd 転写紙の製造方法
JPS6251874A (ja) * 1985-08-30 1987-03-06 Dainippon Printing Co Ltd グラフイツクデイスプレイ上の印刷画面のカラ−ハ−ドコピ−方法
DE3634939A1 (de) * 1986-10-14 1988-04-28 Du Pont Deutschland Verfahren zum aufzeichnen von quasihalbtonbildern
JPH0648413B2 (ja) * 1986-12-27 1994-06-22 キヤノン株式会社 定着装置
DE3718521A1 (de) * 1987-06-03 1988-12-22 Du Pont Deutschland Verfahren zum aufzeichnen von quasihalbtonbildern und vorrichtung zur umwandlung von bildpunkt-tonwertdaten
EP0536971B1 (en) * 1991-10-07 1996-12-11 Hewlett-Packard Company Method for approximating full resolution color printing
DE69308632T2 (de) 1992-05-22 1997-10-02 Agfa Gevaert Nv Verbessertes Verfahren zur frequenzmodulierten Halbtonrasterung
EP0642258B1 (en) * 1993-09-02 1997-11-12 Agfa-Gevaert N.V. Method for generating a frequency modulated halftone image
US5394252A (en) * 1994-03-02 1995-02-28 Xerox Corporation Hybrid quantization method for color document reproduction
JPH07264402A (ja) * 1994-03-18 1995-10-13 Dainippon Screen Mfg Co Ltd 印刷版画像の作成方法
US5552898A (en) 1994-07-06 1996-09-03 Agfa-Gevaert Lossy and lossless compression in raster image processor
US5565994A (en) * 1994-12-06 1996-10-15 Xerox Corporation Multiple separation error diffusion, with cross separation correlation control for color images
US5673121A (en) * 1996-06-17 1997-09-30 Xerox Corporation Stochastic halftoning screening method
US5740334A (en) * 1996-07-01 1998-04-14 Xerox Corporation Quantization method for color document reproduction in a color printing system
US6031626A (en) * 1996-08-15 2000-02-29 Seiko Epson Corporation Color stochastic screening with optimal color dot placement
US5963715A (en) * 1996-08-15 1999-10-05 Seiko Epson Corporation Color stochastic screening with optimal color dot placement for display devices having arbitrary aspect ratios
US5787238A (en) * 1996-11-14 1998-07-28 Xerox Corporation Clustered halftone dot design process
US5740279A (en) * 1996-11-26 1998-04-14 Xerox Corporation Cluster dot halftoning system
US5859955A (en) * 1997-01-21 1999-01-12 Xerox Corporation Stochastically clustered dot halftoning system
US6304340B1 (en) 1998-11-18 2001-10-16 Xerox Corporation Composite halftone screens with stochastically distributed clusters or lines
SG75190A1 (en) 1998-12-14 2000-09-19 Canon Kk Image processing method and apparatus image processing system and storage medium
US6456397B1 (en) 1999-05-12 2002-09-24 Presstek, Inc. Method and apparatus for digital imaging with reduced periodic artifacts using stochastic gradients
JP2001157056A (ja) 1999-11-30 2001-06-08 Fujitsu Ltd ハーフトーン化方法およびハーフトーン化装置並びにハーフトーン化プログラムを記録したコンピュータ読み取り可能な記録媒体
JP2003087567A (ja) * 2001-06-26 2003-03-20 Fujitsu Ltd 印刷方法および印刷装置並びに２値化ディザマトリクスパターン
JP2004208047A (ja) * 2002-12-25 2004-07-22 Fujitsu Ltd 印刷方法
DE102006035254A1 (de) * 2006-07-26 2008-01-31 Francotyp-Postalia Gmbh Verfahren und Anordnung zum Erzeugen eines Abdrucks
US20090034006A1 (en) * 2007-08-03 2009-02-05 Blondal Daniel J Stochastic halftone images based on screening parameters
US20090034008A1 (en) * 2007-08-03 2009-02-05 Lawrence Croft Method for generating stochastic dither matrix

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL278517A (enExample) * 1961-05-16
JPS5233523B1 (enExample) * 1971-02-18 1977-08-29
US4032978A (en) * 1975-01-20 1977-06-28 International Business Machines Corporation Pseudo halftone print generator and method
US4084196A (en) * 1977-01-31 1978-04-11 Dacom, Inc. Electronic half-tone generating means for facsimile reproduction system
US4468706A (en) * 1979-02-13 1984-08-28 Coulter Systems Corporation Imaging by varying the placement of elements in the pixels
US4319267A (en) * 1979-02-16 1982-03-09 Nippon Telegraph And Telephone Public Corporation Picture coding and/or decoding equipment
JPS55146582A (en) * 1979-04-27 1980-11-14 Matsushita Electric Ind Co Ltd Image recording method
JPS5619056A (en) * 1979-07-26 1981-02-23 Dainippon Screen Mfg Co Ltd Method and apparatus for scanning and recording printed dot image
DE2931098C2 (de) * 1979-07-31 1983-01-05 Dr.-Ing. Rudolf Hell Gmbh, 2300 Kiel Verfahren zur Druckformherstellung
EP0031247B1 (en) * 1979-12-20 1984-03-14 Cambridge Consultants Limited Apparatus and method for generating a dispersed dot half tone picture from a continuous tone picture

Also Published As

Publication number Publication date
JPS58189641A (ja) 1983-11-05
EP0074422A1 (de) 1983-03-23
US4485397A (en) 1984-11-27
DE3171227D1 (en) 1985-08-08
EP0074422B1 (de) 1985-07-03
ATE14164T1 (de) 1985-07-15

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