GB2318014B - Colorant-independent color balancing methods and systems - Google Patents

Colorant-independent color balancing methods and systems

Info

Publication number
GB2318014B
GB2318014B GB9726975A GB9726975A GB2318014B GB 2318014 B GB2318014 B GB 2318014B GB 9726975 A GB9726975 A GB 9726975A GB 9726975 A GB9726975 A GB 9726975A GB 2318014 B GB2318014 B GB 2318014B
Authority
GB
United Kingdom
Prior art keywords
colorant
systems
independent color
color balancing
balancing methods
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
GB9726975A
Other versions
GB2318014A (en
GB9726975D0 (en
Inventor
Noboru Murayama
Shigeki Oouchi
Kiyoshi Suzuki
Kouichi Suzuki
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.)
Ricoh Co Ltd
Original Assignee
Ricoh Co Ltd
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
Priority claimed from JP34421595A external-priority patent/JP3243404B2/en
Priority claimed from JP34393995A external-priority patent/JP3241985B2/en
Priority claimed from JP34394095A external-priority patent/JP3241986B2/en
Application filed by Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority claimed from GB9627055A external-priority patent/GB2308773B/en
Publication of GB9726975D0 publication Critical patent/GB9726975D0/en
Publication of GB2318014A publication Critical patent/GB2318014A/en
Application granted granted Critical
Publication of GB2318014B publication Critical patent/GB2318014B/en
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
    • H04N1/56—Processing of colour picture signals
    • H04N1/60—Colour correction or control
    • H04N1/603—Colour correction or control controlled by characteristics of the picture signal generator or the picture reproducer
    • H04N1/6033—Colour correction or control controlled by characteristics of the picture signal generator or the picture reproducer using test pattern analysis

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Color Image Communication Systems (AREA)
  • Facsimile Image Signal Circuits (AREA)
GB9726975A 1995-12-28 1996-12-30 Colorant-independent color balancing methods and systems Expired - Fee Related GB2318014B (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP34421595A JP3243404B2 (en) 1995-12-28 1995-12-28 Color gradation control method
JP34393995A JP3241985B2 (en) 1995-12-28 1995-12-28 Pre-processing method for color balance adjustment
JP34394095A JP3241986B2 (en) 1995-12-28 1995-12-28 Construction method of test sheet for color balance adjustment
GB9627055A GB2308773B (en) 1995-12-28 1996-12-30 Colorant-independent color balancing methods and systems

Publications (3)

Publication Number Publication Date
GB9726975D0 GB9726975D0 (en) 1998-02-18
GB2318014A GB2318014A (en) 1998-04-08
GB2318014B true GB2318014B (en) 1998-09-23

Family

ID=27451586

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9726975A Expired - Fee Related GB2318014B (en) 1995-12-28 1996-12-30 Colorant-independent color balancing methods and systems

Country Status (1)

Country Link
GB (1) GB2318014B (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0144188A2 (en) * 1983-12-07 1985-06-12 Xerox Corporation Copy density correction system
WO1988004503A1 (en) * 1986-12-12 1988-06-16 Eastman Kodak Company Process control for electrostatographic machine

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0144188A2 (en) * 1983-12-07 1985-06-12 Xerox Corporation Copy density correction system
WO1988004503A1 (en) * 1986-12-12 1988-06-16 Eastman Kodak Company Process control for electrostatographic machine

Also Published As

Publication number Publication date
GB2318014A (en) 1998-04-08
GB9726975D0 (en) 1998-02-18

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20121230