JPS61261749A - Formation of color latent image - Google Patents

Formation of color latent image

Info

Publication number
JPS61261749A
JPS61261749A JP10272685A JP10272685A JPS61261749A JP S61261749 A JPS61261749 A JP S61261749A JP 10272685 A JP10272685 A JP 10272685A JP 10272685 A JP10272685 A JP 10272685A JP S61261749 A JPS61261749 A JP S61261749A
Authority
JP
Japan
Prior art keywords
photosensitive
image
black
original
optical
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
JP10272685A
Other languages
Japanese (ja)
Inventor
Takashi Bisaiji
Noboru Sawayama
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 JP10272685A priority Critical patent/JPS61261749A/en
Publication of JPS61261749A publication Critical patent/JPS61261749A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To obtain a color reproduceable copy erasing the latent image of a black image to obtain a full color copy from an original constituting of black and chromatic colors, forming the latent images of specific color components in a chromatic color image and forming the latent image of the black image independently.
CONSTITUTION: To form an electrostatic latent image corresponding to a chromatic color image of an original 1 including black and chromatic color images on a photosensitive body 5 by an electrophotographic method, light enough for the optical fatigue of the photosensitive body 5 is uniformly irradiated to the photosensitive body 5 and then the photosensitive body 5 is electrically charged. In an area of the photosensitive body 5 which corresponds to the part other than a black image part of the original 1, the optical image of the original 1 is exposed to the photosensitive body 5 with the quantity of light required and sufficient for the erase of the optical fatigue and electric charge formed by said respective processes. Electric charge left on the part of the photosensitive body 5 which corresponds to the black image part of the original 1 is destaticized, the photosensitive body 5 is electrically charged to charge the optical fatigue part and the non-fatigue part with different electric potential levels each other and then the optical image of a certain chromatic optical component of the reflected light of the same original is exposed to the same position as said exposure on the photosensitive body 5. Consequently, the black part is reproduced only by black, saving the consumption of toner.
COPYRIGHT: (C)1986,JPO&Japio
JP10272685A 1985-05-16 1985-05-16 Formation of color latent image Pending JPS61261749A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10272685A JPS61261749A (en) 1985-05-16 1985-05-16 Formation of color latent image

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10272685A JPS61261749A (en) 1985-05-16 1985-05-16 Formation of color latent image

Publications (1)

Publication Number Publication Date
JPS61261749A true JPS61261749A (en) 1986-11-19

Family

ID=14335264

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10272685A Pending JPS61261749A (en) 1985-05-16 1985-05-16 Formation of color latent image

Country Status (1)

Country Link
JP (1) JPS61261749A (en)

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