JPS5753767A - Multicolor electrophotographic copying machine - Google Patents

Multicolor electrophotographic copying machine

Info

Publication number
JPS5753767A
JPS5753767A JP55129533A JP12953380A JPS5753767A JP S5753767 A JPS5753767 A JP S5753767A JP 55129533 A JP55129533 A JP 55129533A JP 12953380 A JP12953380 A JP 12953380A JP S5753767 A JPS5753767 A JP S5753767A
Authority
JP
Japan
Prior art keywords
photoreceptor
sensors
color
potential
irradiated
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
JP55129533A
Other languages
Japanese (ja)
Inventor
Kenji Takeda
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 JP55129533A priority Critical patent/JPS5753767A/en
Publication of JPS5753767A publication Critical patent/JPS5753767A/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

Abstract

PURPOSE:To measure the potential of a receptor surface simultaneously for photoreceptor charging characteristic adjustment as to each separated light with which each photoreceptor area is irradiated, by arranging photoreceptor surface potential sensors in the width direction of the photoreceptor while the sensors are made to face the photoreceptor surface. CONSTITUTION:Under the exposure part 4 of a photoreceptor drum 1, three photoreceptor surface potential sensors S1, S2 and S3 are provided on a holding member 22 and drum area surfaces 11, 12 and 13 of those sensors S1 (blue), S2 (green) and S3 (red) are irradiated with separated light beams LB (blue), LG (green) and LR (red). On an original setting table 11, a three-color pattern test sheet O' consisting of successively formed three color patterns B, R and G is placed and lit up rough a neutral filter 20N to measure the potential of the photoreceptor surface; and then each color is corrected and stored in a storing circuit temporarily, and charging or control over a lamp is performed in color separation copying process.
JP55129533A 1980-09-17 1980-09-17 Multicolor electrophotographic copying machine Pending JPS5753767A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55129533A JPS5753767A (en) 1980-09-17 1980-09-17 Multicolor electrophotographic copying machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55129533A JPS5753767A (en) 1980-09-17 1980-09-17 Multicolor electrophotographic copying machine

Publications (1)

Publication Number Publication Date
JPS5753767A true JPS5753767A (en) 1982-03-30

Family

ID=15011861

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55129533A Pending JPS5753767A (en) 1980-09-17 1980-09-17 Multicolor electrophotographic copying machine

Country Status (1)

Country Link
JP (1) JPS5753767A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010128649A1 (en) 2009-05-08 2010-11-11 株式会社日本触媒 Diaryl iodonium salt mixture and process for production thereof, and process for production of diaryl iodonium compound

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010128649A1 (en) 2009-05-08 2010-11-11 株式会社日本触媒 Diaryl iodonium salt mixture and process for production thereof, and process for production of diaryl iodonium compound

Similar Documents

Publication Publication Date Title
DE3687074D1 (en) METHOD, CONTROL DEVICE AND AUXILIARY TO ACHIEVE A UNIFORM PRINT RESULT ON AN AUTOTYPICAL MULTICOLOR OFFSET PRINTING MACHINE.
JPS55113003A (en) Production of multicolor optical filter
DE3362586D1 (en) Optical test pattern for the correction of convergence errors in a colour camera
JPS539520A (en) Photosensitive material for forming color image
US3718397A (en) Device for determining proper color balance in color printing
JPS5753767A (en) Multicolor electrophotographic copying machine
US3615441A (en) Color correction by masking for a four-color printing process
JPS6418682A (en) Photoengraving printer
JPS6480905A (en) Production of color filter
JPS5756836A (en) Method and device for correcting anti-reciprocity law in case of color reproduction
JPS6440935A (en) Image forming device provided with auxiliary exposure device
JPS62106478A (en) Exposure controller
ES450335A1 (en) Notch filter for color transparency copying machines
JPS57102671A (en) Color copying machine
SE8105395L (en) SET AND EQUIPMENT FOR FERG BALANCED ENTRY BY ADDITIVE FERG PHOTOS SYSTEM
JPS6490458A (en) Color correcting method for color copying machine
ES474589A1 (en) Process for making color separation negatives and positives for use in multi-color printing
JPS549929A (en) Multicolor electrophotography
JPS5643662A (en) Copying method
GB639142A (en) Improvements in or relating to a method and apparatus for making photographic colourprints
GB1521708A (en) Electrophotographic apparatus
JPH0540524Y2 (en)
SU39579A1 (en) The method of obtaining and reproducing color images
JPS5665145A (en) Electrophotographic receptor
AU521189B2 (en) Colour developing sheet for no-carbon copying process