JP2008544667A - 多数レベル周波数変調ハーフトーンスクリーンとその製法 - Google Patents

多数レベル周波数変調ハーフトーンスクリーンとその製法 Download PDF

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Publication number
JP2008544667A
JP2008544667A JP2008517509A JP2008517509A JP2008544667A JP 2008544667 A JP2008544667 A JP 2008544667A JP 2008517509 A JP2008517509 A JP 2008517509A JP 2008517509 A JP2008517509 A JP 2008517509A JP 2008544667 A JP2008544667 A JP 2008544667A
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JP
Japan
Prior art keywords
threshold
image
matrix
printing
halftoning
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.)
Withdrawn
Application number
JP2008517509A
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English (en)
Japanese (ja)
Inventor
バン・ガルセ，ジヨリス
デレセ，イグナス
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.)
Agfa NV
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Agfa NV
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Filing date
Publication date
Priority claimed from EP05105659A external-priority patent/EP1737211A1/fr
Application filed by Agfa NV filed Critical Agfa NV
Publication of JP2008544667A publication Critical patent/JP2008544667A/ja
Withdrawn legal-status Critical Current

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    • 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

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  • Physics & Mathematics (AREA)
  • Discrete Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Image Processing (AREA)
  • Facsimile Image Signal Circuits (AREA)
JP2008517509A 2005-06-24 2006-06-22 多数レベル周波数変調ハーフトーンスクリーンとその製法 Withdrawn JP2008544667A (ja)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP05105659A EP1737211A1 (fr) 2005-06-24 2005-06-24 Trame de demi-teintes à modulation de fréquence et à plusieurs niveaux et son procédé de fabrication
US69786405P 2005-07-08 2005-07-08
PCT/EP2006/063461 WO2006136600A1 (fr) 2005-06-24 2006-06-22 Trame de similigravure a modulation de frequence multiniveau et procede permettant de produire cette trame

Publications (1)

Publication Number Publication Date
JP2008544667A true JP2008544667A (ja) 2008-12-04

Family

ID=37136786

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2008517509A Withdrawn JP2008544667A (ja) 2005-06-24 2006-06-22 多数レベル周波数変調ハーフトーンスクリーンとその製法

Country Status (2)

Country Link
JP (1) JP2008544667A (fr)
WO (1) WO2006136600A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8934142B2 (en) 2013-04-30 2015-01-13 Hewlett-Packard Indigo B.V. Halftone screen

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5291311A (en) * 1992-06-29 1994-03-01 Eastman Kodak Company Apparatus and method for generating multi-level output values for pixels in a halftone cell
EP0670654B1 (fr) * 1994-03-02 2001-04-18 Hewlett-Packard Company, A Delaware Corporation Génération d'images à tons multiples
US5633729A (en) * 1994-12-22 1997-05-27 Eastman Kodak Company Processes for minimizing the quantization error in multi-level halftone transfer functions
US5729663A (en) * 1995-12-07 1998-03-17 Xerox Corporation Method and apparatus for gray screening
US6068361A (en) * 1997-10-30 2000-05-30 Mantell; David A. Method and apparatus for multiple drop error diffusion in a liquid ink printer

Also Published As

Publication number Publication date
WO2006136600A1 (fr) 2006-12-28

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A300 Application deemed to be withdrawn because no request for examination was validly filed

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Effective date: 20090901