DE3171227D1 - Method for the production of printing plates by means of printing irregularly distributed points - Google Patents

Method for the production of printing plates by means of printing irregularly distributed points

Info

Publication number
DE3171227D1
DE3171227D1 DE8181107207T DE3171227T DE3171227D1 DE 3171227 D1 DE3171227 D1 DE 3171227D1 DE 8181107207 T DE8181107207 T DE 8181107207T DE 3171227 T DE3171227 T DE 3171227T DE 3171227 D1 DE3171227 D1 DE 3171227D1
Authority
DE
Germany
Prior art keywords
sub
same
printing
gradation
production
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
Application number
DE8181107207T
Other languages
German (de)
English (en)
Inventor
Karl R Prof Dr Scheuter
Gerhard Dipl Ing Fischer
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.)
Heidelberger Druckmaschinen AG
Original Assignee
Dr Ing Rudolf Hell GmbH
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 Dr Ing Rudolf Hell GmbH filed Critical Dr Ing Rudolf Hell GmbH
Application granted granted Critical
Publication of DE3171227D1 publication Critical patent/DE3171227D1/de
Expired 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)
DE8181107207T 1981-09-12 1981-09-12 Method for the production of printing plates by means of printing irregularly distributed points Expired DE3171227D1 (en)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
DE3171227D1 true DE3171227D1 (en) 1985-08-08

Family

ID=8187906

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8181107207T Expired DE3171227D1 (en) 1981-09-12 1981-09-12 Method for the production of printing plates by means of printing irregularly distributed points

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
EP0132453B1 (de) * 1983-07-29 1987-05-27 DR.-ING. RUDOLF HELL 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
DE69215824T2 (de) * 1991-10-07 1997-04-03 Hewlett Packard Co Verfahren zur Annäherung voller Auflösung beim Farbdrucken
EP0571010B1 (en) 1992-05-22 1997-03-12 Agfa-Gevaert N.V. An improved frequency modulation halftoning method
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
EP0074422B1 (de) 1985-07-03
US4485397A (en) 1984-11-27
ATE14164T1 (de) 1985-07-15
EP0074422A1 (de) 1983-03-23
JPH0532220B2 (enExample) 1993-05-14
JPS58189641A (ja) 1983-11-05

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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: LINOTYPE-HELL AG, 6236 ESCHBORN, DE

8339 Ceased/non-payment of the annual fee