JPS57119378A - Multicolor electrophotographic method - Google Patents

Multicolor electrophotographic method

Info

Publication number
JPS57119378A
JPS57119378A JP56005756A JP575681A JPS57119378A JP S57119378 A JPS57119378 A JP S57119378A JP 56005756 A JP56005756 A JP 56005756A JP 575681 A JP575681 A JP 575681A JP S57119378 A JPS57119378 A JP S57119378A
Authority
JP
Japan
Prior art keywords
transferred
transfer
toner
color
charge quantity
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
JP56005756A
Other languages
Japanese (ja)
Other versions
JPH0132981B2 (en
Inventor
Eiichi Imai
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 JP56005756A priority Critical patent/JPH0132981B2/ja
Publication of JPS57119378A publication Critical patent/JPS57119378A/en
Publication of JPH0132981B2 publication Critical patent/JPH0132981B2/ja
Expired legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03GELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G13/00Electrographic processes using a charge pattern
    • G03G13/01Electrographic processes using a charge pattern for multicoloured copies
    • G03G13/013Electrographic processes using a charge pattern for multicoloured copies characterised by the developing step, e.g. the properties of the colour developers
    • G03G13/0133Electrographic processes using a charge pattern for multicoloured copies characterised by the developing step, e.g. the properties of the colour developers developing using a step for deposition of subtractive colorant developing compositions, e.g. cyan, magenta and yellow

Abstract

PURPOSE:To provide good multiple transfer characteristic in spite of the change in transfer electric field by controlling the electric charge quantity of the toners in respective developers in such a way that the toner transferred at the 2nd color transfer has larger triboelectric charge quantity than the toner transferred at the 1st, and the toner transferred at the 3rd color transfer than that at the 2nd. CONSTITUTION:This relates to a method of controlling the triboelectric charge quantity of the toner to be transferred next to a larger quantity than that of the toner to be transferred previously, wherein the electrostatic latent image formed on a photosensitive drum 19 is first visualized by the developer in a developing device 16-1 and is transferred onto the transfer material on a transfer drum 19 by a transfer Corotron 21. Further, the toner powder image developed by the developer in a developing device 16-2 as the 2nd color is also transferred to the transfer material by the Corotron 21 and the 3rd time is accomplished in the same way. The drum 19 rotates by a prescribed time while holding the transfer material, whereby images of a prescribed number of color are transferred in multiplicity.
JP56005756A 1981-01-17 1981-01-17 Expired JPH0132981B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56005756A JPH0132981B2 (en) 1981-01-17 1981-01-17

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56005756A JPH0132981B2 (en) 1981-01-17 1981-01-17

Publications (2)

Publication Number Publication Date
JPS57119378A true JPS57119378A (en) 1982-07-24
JPH0132981B2 JPH0132981B2 (en) 1989-07-11

Family

ID=11619959

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56005756A Expired JPH0132981B2 (en) 1981-01-17 1981-01-17

Country Status (1)

Country Link
JP (1) JPH0132981B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01185567A (en) * 1988-01-18 1989-07-25 Canon Inc Image forming device possessing plural developing means
US5953566A (en) * 1997-04-22 1999-09-14 Minolta Co., Ltd. Color image forming method and apparatus providing for efficient toner transfer based on toner zeta potentials

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1292315C (en) 2001-05-31 2006-12-27 富士施乐株式会社 Color image forming method and color image forming device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS531026A (en) * 1976-06-25 1978-01-07 Konishiroku Photo Ind Co Ltd Color copy process

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS531026A (en) * 1976-06-25 1978-01-07 Konishiroku Photo Ind Co Ltd Color copy process

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01185567A (en) * 1988-01-18 1989-07-25 Canon Inc Image forming device possessing plural developing means
US5953566A (en) * 1997-04-22 1999-09-14 Minolta Co., Ltd. Color image forming method and apparatus providing for efficient toner transfer based on toner zeta potentials

Also Published As

Publication number Publication date
JPH0132981B2 (en) 1989-07-11

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