JPS56156848A - Regular copying and reversal copying method - Google Patents

Regular copying and reversal copying method

Info

Publication number
JPS56156848A
JPS56156848A JP6114180A JP6114180A JPS56156848A JP S56156848 A JPS56156848 A JP S56156848A JP 6114180 A JP6114180 A JP 6114180A JP 6114180 A JP6114180 A JP 6114180A JP S56156848 A JPS56156848 A JP S56156848A
Authority
JP
Japan
Prior art keywords
positive
copying
photoreceptor
charging
corotron
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
JP6114180A
Other languages
Japanese (ja)
Inventor
Itsuro Ando
Koichi Saito
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.)
Fujifilm Business Innovation Corp
Original Assignee
Fuji Xerox 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 Fuji Xerox Co Ltd filed Critical Fuji Xerox Co Ltd
Priority to JP6114180A priority Critical patent/JPS56156848A/en
Publication of JPS56156848A publication Critical patent/JPS56156848A/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
    • G03G21/00—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge
    • G03G21/06—Eliminating residual charges from a reusable imaging member

Abstract

PURPOSE:To obtain a stable positive picture from negative as well as positive originals, by subjecting the photoreceptor to the first charging, the second charging, uniform exposure to light, and transfer and applying the destaticizing electric field to it before the regular copying operation when reversal copying is switched to regular copying. CONSTITUTION:Reversal copying to obtain a positive picture from the negative original is shown in the figure. The photoreceptor including insulating layer 3 is charged negatively by charger 4 and has positive charge discharged by charger 8. When a positive picture is obtained from the positive original, switch 12 is turned off in respect to chargers, and developing cylinder 14 is grounded at the developing time to expose the photoreceptor to light uniformly by front exposing lamp 28, and switch 23 is turned off, in the figure. After switching from the negative positive mode to the positive positive mode, first charging corotron 4, the second charging corotron 8, lamp 28, transfer corotron 18, and destaticizing corotron 26 are caused to act upon the photoreceptor once at least before copying in each process for positive positive reproducing.
JP6114180A 1980-05-08 1980-05-08 Regular copying and reversal copying method Pending JPS56156848A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6114180A JPS56156848A (en) 1980-05-08 1980-05-08 Regular copying and reversal copying method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6114180A JPS56156848A (en) 1980-05-08 1980-05-08 Regular copying and reversal copying method

Publications (1)

Publication Number Publication Date
JPS56156848A true JPS56156848A (en) 1981-12-03

Family

ID=13162515

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6114180A Pending JPS56156848A (en) 1980-05-08 1980-05-08 Regular copying and reversal copying method

Country Status (1)

Country Link
JP (1) JPS56156848A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4454559A (en) * 1982-08-30 1984-06-12 Xerox Corporation Control for a corona discharge device
FR2537739A1 (en) * 1982-12-13 1984-06-15 Fuji Photo Film Co Ltd Density control for electrophotographic copier

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4454559A (en) * 1982-08-30 1984-06-12 Xerox Corporation Control for a corona discharge device
FR2537739A1 (en) * 1982-12-13 1984-06-15 Fuji Photo Film Co Ltd Density control for electrophotographic copier

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