JPS6447553A - Recording method of color tone - Google Patents

Recording method of color tone

Info

Publication number
JPS6447553A
JPS6447553A JP20425787A JP20425787A JPS6447553A JP S6447553 A JPS6447553 A JP S6447553A JP 20425787 A JP20425787 A JP 20425787A JP 20425787 A JP20425787 A JP 20425787A JP S6447553 A JPS6447553 A JP S6447553A
Authority
JP
Japan
Prior art keywords
dots
driving
pale
density
upper limit
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.)
Granted
Application number
JP20425787A
Other languages
Japanese (ja)
Other versions
JP2643949B2 (en
Inventor
Kentaro Matsumoto
Makoto Takaoka
Toyokazu Uda
Akiyoshi Fukumoto
Susumu Sugiura
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.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Priority to JP20425787A priority Critical patent/JP2643949B2/en
Publication of JPS6447553A publication Critical patent/JPS6447553A/en
Application granted granted Critical
Publication of JP2643949B2 publication Critical patent/JP2643949B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • 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
    • B41J2/205—Ink jet for printing a discrete number of tones
    • B41J2/2054—Ink jet for printing a discrete number of tones by the variation of dot disposition or characteristics, e.g. dot number density, dot shape

Landscapes

  • Ink Jet (AREA)
  • Particle Formation And Scattering Control In Inkjet Printers (AREA)
  • Dot-Matrix Printers And Others (AREA)
  • Color, Gradation (AREA)

Abstract

PURPOSE:To obtain a color tone having little turbidity and high chroma by bringing the upper limit of the number of driving in a dot matrix to 80% of the number of capability of driving regarding the pale density ink of yellow, magenta, cyan and black. CONSTITUTION:When image data at the time of the output thereof and a dot pattern are made to correspond each other, a 3X3 matrix is used in the pale density dots of color ink, the 5 dots are employed as the upper limit of the pale density dots of color ink though the matrix is buried at 100% by 9 dots, 7 dots are used as the upper limit exceptionally, the driving of dots is started from the center of the dot matrix, and the number of driving is increased in the clockwise direction to the periphery from the center. Regarding the pale density ink of black ink, on the other hand, 4 dots are employed as the upper limit of pale density dots, and 7 dots are used as the upper limit exceptionally. The driving of dots is started from the corner of the dot matrix, and the number of driving is augmented in the counterclockwise direction to the center from the periphery. Accordingly, color ink and black ink are overlapped in a low density region, and the turbidity of colors can be prevented, thus acquiring bright smooth image quality.
JP20425787A 1987-08-19 1987-08-19 Color gradation recording method Expired - Fee Related JP2643949B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP20425787A JP2643949B2 (en) 1987-08-19 1987-08-19 Color gradation recording method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP20425787A JP2643949B2 (en) 1987-08-19 1987-08-19 Color gradation recording method

Publications (2)

Publication Number Publication Date
JPS6447553A true JPS6447553A (en) 1989-02-22
JP2643949B2 JP2643949B2 (en) 1997-08-25

Family

ID=16487465

Family Applications (1)

Application Number Title Priority Date Filing Date
JP20425787A Expired - Fee Related JP2643949B2 (en) 1987-08-19 1987-08-19 Color gradation recording method

Country Status (1)

Country Link
JP (1) JP2643949B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000141617A (en) * 1998-11-05 2000-05-23 Canon Inc Ink jet recorder and recording control method
US6597428B1 (en) 1997-07-10 2003-07-22 Fuji Photo Film Co., Ltd. Method and apparatus for forming photographic images
JP2009241609A (en) * 2009-07-27 2009-10-22 Seiko Epson Corp Printing control device, printer, and printing control method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6597428B1 (en) 1997-07-10 2003-07-22 Fuji Photo Film Co., Ltd. Method and apparatus for forming photographic images
JP2000141617A (en) * 1998-11-05 2000-05-23 Canon Inc Ink jet recorder and recording control method
JP2009241609A (en) * 2009-07-27 2009-10-22 Seiko Epson Corp Printing control device, printer, and printing control method

Also Published As

Publication number Publication date
JP2643949B2 (en) 1997-08-25

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Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees