JPS57178253A - Color balancing method in color copying machine - Google Patents

Color balancing method in color copying machine

Info

Publication number
JPS57178253A
JPS57178253A JP56063828A JP6382881A JPS57178253A JP S57178253 A JPS57178253 A JP S57178253A JP 56063828 A JP56063828 A JP 56063828A JP 6382881 A JP6382881 A JP 6382881A JP S57178253 A JPS57178253 A JP S57178253A
Authority
JP
Japan
Prior art keywords
color
gamma characteristics
developing
latent image
charging
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.)
Pending
Application number
JP56063828A
Other languages
Japanese (ja)
Inventor
Seiichi Miyagawa
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
Application filed by Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP56063828A priority Critical patent/JPS57178253A/en
Publication of JPS57178253A publication Critical patent/JPS57178253A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/01—Apparatus for electrographic processes using a charge pattern for producing multicoloured copies

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)

Abstract

PURPOSE:To perform color balancing that takes developing gamma characteristics into consideration by storing the optimum latent image gamma characteristics for color balance by each color toner according to the developing gamma characteristics of the respective color toners. CONSTITUTION:Optimum latent image gamma characteristics according to developing gamma characteristics are stored in a storage part 31. In accordance with electrostaic charging and the color separated images of a reference pattern SP by gray scale, a photoreceptor 1 is exposed. The surface potential of the exposed positions is detected and is compared with the latent image gamma characteristics stored by a storage part 31. The potential of a charger 2 and the quantity of light of a lamp 21 are adjusted until these coincide. The charging potential and exposure light quantity obtd. in this way are set as exposure conditions. The charging conditions and exposure light quantity are determined in the similar manner as for other color separation. In this way, the color balancing that takes the developing gamma characteristics into consideration is accomplished.
JP56063828A 1981-04-27 1981-04-27 Color balancing method in color copying machine Pending JPS57178253A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56063828A JPS57178253A (en) 1981-04-27 1981-04-27 Color balancing method in color copying machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56063828A JPS57178253A (en) 1981-04-27 1981-04-27 Color balancing method in color copying machine

Publications (1)

Publication Number Publication Date
JPS57178253A true JPS57178253A (en) 1982-11-02

Family

ID=13240604

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56063828A Pending JPS57178253A (en) 1981-04-27 1981-04-27 Color balancing method in color copying machine

Country Status (1)

Country Link
JP (1) JPS57178253A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61117572A (en) * 1984-11-13 1986-06-04 Canon Inc Electrophotographic device
JPS63204276A (en) * 1987-02-20 1988-08-23 Fuji Photo Film Co Ltd Color copying condition setting method
US4888618A (en) * 1987-01-19 1989-12-19 Canon Kabushiki Kaisha Image forming apparatus having ambient condition detecting means

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61117572A (en) * 1984-11-13 1986-06-04 Canon Inc Electrophotographic device
JPH0574823B2 (en) * 1984-11-13 1993-10-19 Canon Kk
US4888618A (en) * 1987-01-19 1989-12-19 Canon Kabushiki Kaisha Image forming apparatus having ambient condition detecting means
JPS63204276A (en) * 1987-02-20 1988-08-23 Fuji Photo Film Co Ltd Color copying condition setting method
JP2576982B2 (en) * 1987-02-20 1997-01-29 富士写真フイルム株式会社 Color copy condition setting method

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