JPS576855A - Polychromatic electrophotographic copying method - Google Patents

Polychromatic electrophotographic copying method

Info

Publication number
JPS576855A
JPS576855A JP8028780A JP8028780A JPS576855A JP S576855 A JPS576855 A JP S576855A JP 8028780 A JP8028780 A JP 8028780A JP 8028780 A JP8028780 A JP 8028780A JP S576855 A JPS576855 A JP S576855A
Authority
JP
Japan
Prior art keywords
toner
softening point
red
image density
black
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
JP8028780A
Other languages
Japanese (ja)
Inventor
Setsuo Soga
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 JP8028780A priority Critical patent/JPS576855A/en
Publication of JPS576855A publication Critical patent/JPS576855A/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
    • G03G13/00—Electrographic processes using a charge pattern
    • G03G13/01—Electrographic processes using a charge pattern for multicoloured copies
    • G03G13/013—Electrographic processes using a charge pattern for multicoloured copies characterised by the developing step, e.g. the properties of the colour developers

Landscapes

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

Abstract

PURPOSE:To obtain a well-balanced copy with high image density about all colors by carrying out development with toners having different colors and different polarities in the order of increasing softening point. CONSTITUTION:A latent image with a positively charged red part, a negatively charged black part and a zero potential white part on the surface of a photoreceptor 1 is first developed with a black positive toner 4 having a lower softening point, and it is developed with a red negative toner 6 having a higher softening point. Since the toner 4 gives relatively high image density independently of the sticking amount, it is fixed thoroughly even if made thinner by rubbing with a magnetic brush for the toner 6. Accordingly, the resulting transferred image has almost equal image density about red and black, and a well-balanced copy is obtd.
JP8028780A 1980-06-16 1980-06-16 Polychromatic electrophotographic copying method Pending JPS576855A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8028780A JPS576855A (en) 1980-06-16 1980-06-16 Polychromatic electrophotographic copying method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8028780A JPS576855A (en) 1980-06-16 1980-06-16 Polychromatic electrophotographic copying method

Publications (1)

Publication Number Publication Date
JPS576855A true JPS576855A (en) 1982-01-13

Family

ID=13714051

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8028780A Pending JPS576855A (en) 1980-06-16 1980-06-16 Polychromatic electrophotographic copying method

Country Status (1)

Country Link
JP (1) JPS576855A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002361118A (en) * 2001-06-12 2002-12-17 Rita System Kk Flow rate regulation valve for supplying coating

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002361118A (en) * 2001-06-12 2002-12-17 Rita System Kk Flow rate regulation valve for supplying coating

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