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JPS56140359A - Trichromatic electrophotographic copying method - Google Patents

Trichromatic electrophotographic copying method

Info

Publication number
JPS56140359A
JPS56140359A JP4433280A JP4433280A JPS56140359A JP S56140359 A JPS56140359 A JP S56140359A JP 4433280 A JP4433280 A JP 4433280A JP 4433280 A JP4433280 A JP 4433280A JP S56140359 A JPS56140359 A JP S56140359A
Authority
JP
Japan
Prior art keywords
trichromatic
photoreceptor
sensitivity
light
red
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
JP4433280A
Other languages
Japanese (ja)
Other versions
JPS637385B2 (en
Inventor
Toshio Sakai
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 JP4433280A priority Critical patent/JPS56140359A/en
Publication of JPS56140359A publication Critical patent/JPS56140359A/en
Publication of JPS637385B2 publication Critical patent/JPS637385B2/ja
Granted 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
    • G03G13/00—Electrographic processes using a charge pattern
    • G03G13/01—Electrographic processes using a charge pattern for multicoloured copies

Landscapes

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

Abstract

PURPOSE:To carry out trichromatic electrophotographic copy by exposing a photoreceptor manufactured by laminating the 1st and 2nd photoconductive layers on an electrically conductive substrate to the light image of a trichromatic original followed by development with toners of three colors. CONSTITUTION:Photoconductive layer 12 having no sensitivity to red light and sensitivity to blue light and photoconductive layer 13 having sensitivity to red light and lower sensitivity to blue light than the sensitivity of layer 12 are laminated on electrically conductive substrate 11 to manufacture photoreceptor 1. Photoreceptor 1 is electrically charged at least twice while reversing the polarity alternately to charge layers 12, 13 reversely to each other, and the surface potential of photoreceptor 1 is adjusted to a value relatively near 0. Photoreceptor 1 is then exposed to the light image of trichromatic original O having a trichromatic image of red, blue and black on the white ground to form an electrostatic latent image part. This latent image is made visible with red, blue and black toners.
JP4433280A 1980-04-04 1980-04-04 Trichromatic electrophotographic copying method Granted JPS56140359A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4433280A JPS56140359A (en) 1980-04-04 1980-04-04 Trichromatic electrophotographic copying method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4433280A JPS56140359A (en) 1980-04-04 1980-04-04 Trichromatic electrophotographic copying method

Publications (2)

Publication Number Publication Date
JPS56140359A true JPS56140359A (en) 1981-11-02
JPS637385B2 JPS637385B2 (en) 1988-02-16

Family

ID=12688550

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4433280A Granted JPS56140359A (en) 1980-04-04 1980-04-04 Trichromatic electrophotographic copying method

Country Status (1)

Country Link
JP (1) JPS56140359A (en)

Also Published As

Publication number Publication date
JPS637385B2 (en) 1988-02-16

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