DE68925871D1 - Verfahren und System zur Qualitätsverbesserung von durch Tintenspritzdrucker erzeugten Farb- und Schwarzweiss-Bildern - Google Patents

Verfahren und System zur Qualitätsverbesserung von durch Tintenspritzdrucker erzeugten Farb- und Schwarzweiss-Bildern

Info

Publication number
DE68925871D1
DE68925871D1 DE68925871T DE68925871T DE68925871D1 DE 68925871 D1 DE68925871 D1 DE 68925871D1 DE 68925871 T DE68925871 T DE 68925871T DE 68925871 T DE68925871 T DE 68925871T DE 68925871 D1 DE68925871 D1 DE 68925871D1
Authority
DE
Germany
Prior art keywords
black
color
improving
quality
inkjet printers
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
Application number
DE68925871T
Other languages
English (en)
Other versions
DE68925871T2 (de
Inventor
C S Chan
Terry M Nelson
James G Bearss
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.)
Hewlett Packard Development Co LP
Original Assignee
Hewlett Packard Co
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 Hewlett Packard Co filed Critical Hewlett Packard Co
Publication of DE68925871D1 publication Critical patent/DE68925871D1/de
Application granted granted Critical
Publication of DE68925871T2 publication Critical patent/DE68925871T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • H04N1/46—Colour picture communication systems
    • H04N1/52—Circuits or arrangements for halftone screening
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K15/00—Arrangements for producing a permanent visual presentation of the output data, e.g. computer output printers
    • G06K15/02—Arrangements for producing a permanent visual presentation of the output data, e.g. computer output printers using printers
    • G06K15/10—Arrangements for producing a permanent visual presentation of the output data, e.g. computer output printers using printers by matrix printers
    • G06K15/102—Arrangements for producing a permanent visual presentation of the output data, e.g. computer output printers using printers by matrix printers using ink jet print heads
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/21—Ink jet for multi-colour printing
    • B41J2/2121—Ink jet for multi-colour printing characterised by dot size, e.g. combinations of printed dots of different diameter
    • B41J2/2128—Ink jet for multi-colour printing characterised by dot size, e.g. combinations of printed dots of different diameter by means of energy modulation
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K2215/00—Arrangements for producing a permanent visual presentation of the output data
    • G06K2215/0082—Architecture adapted for a particular function
    • G06K2215/0094—Colour printing

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • General Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Mathematical Physics (AREA)
  • Discrete Mathematics (AREA)
  • Ink Jet (AREA)
  • Color, Gradation (AREA)
  • Facsimile Image Signal Circuits (AREA)
  • Fax Reproducing Arrangements (AREA)
  • Particle Formation And Scattering Control In Inkjet Printers (AREA)
DE68925871T 1988-12-02 1989-11-30 Verfahren und System zur Qualitätsverbesserung von durch Tintenspritzdrucker erzeugten Farb- und Schwarzweiss-Bildern Expired - Fee Related DE68925871T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/278,881 US4930018A (en) 1988-12-02 1988-12-02 Method and system for enhancing the quality of both color and black and white images produced by ink jet printers

Publications (2)

Publication Number Publication Date
DE68925871D1 true DE68925871D1 (de) 1996-04-11
DE68925871T2 DE68925871T2 (de) 1996-08-01

Family

ID=23066773

Family Applications (1)

Application Number Title Priority Date Filing Date
DE68925871T Expired - Fee Related DE68925871T2 (de) 1988-12-02 1989-11-30 Verfahren und System zur Qualitätsverbesserung von durch Tintenspritzdrucker erzeugten Farb- und Schwarzweiss-Bildern

Country Status (6)

Country Link
US (1) US4930018A (de)
EP (1) EP0372826B1 (de)
JP (1) JP2980331B2 (de)
CA (1) CA1322891C (de)
DE (1) DE68925871T2 (de)
HK (1) HK161296A (de)

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JP4348748B2 (ja) * 1996-07-18 2009-10-21 セイコーエプソン株式会社 印刷装置および画像記録方法
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JP3397662B2 (ja) * 1996-12-04 2003-04-21 キヤノン株式会社 記録装置及び該装置の制御方法
US6081340A (en) * 1997-03-31 2000-06-27 Xerox Corporation Image processing method to reduce marking material coverage with non-linear specifications
US6072591A (en) * 1997-06-30 2000-06-06 Xerox Corporation Sum and difference error diffusion
US6539110B2 (en) * 1997-10-14 2003-03-25 Apple Computer, Inc. Method and system for color matching between digital display devices
US6135655A (en) * 1997-10-14 2000-10-24 Hewlett-Packard Company Multipixel dots in monochrome drop-on-demand printing
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Also Published As

Publication number Publication date
US4930018A (en) 1990-05-29
CA1322891C (en) 1993-10-12
EP0372826B1 (de) 1996-03-06
HK161296A (en) 1996-09-06
JPH02188263A (ja) 1990-07-24
DE68925871T2 (de) 1996-08-01
EP0372826A3 (de) 1992-04-15
JP2980331B2 (ja) 1999-11-22
EP0372826A2 (de) 1990-06-13

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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: HEWLETT-PACKARD CO. (N.D.GES.D.STAATES DELAWARE),

8327 Change in the person/name/address of the patent owner

Owner name: HEWLETT-PACKARD DEVELOPMENT CO., L.P., HOUSTON, TE

8339 Ceased/non-payment of the annual fee