JPS5789782A - Improving method for transfer characteristic of elecronic copying machine - Google Patents

Improving method for transfer characteristic of elecronic copying machine

Info

Publication number
JPS5789782A
JPS5789782A JP16557780A JP16557780A JPS5789782A JP S5789782 A JPS5789782 A JP S5789782A JP 16557780 A JP16557780 A JP 16557780A JP 16557780 A JP16557780 A JP 16557780A JP S5789782 A JPS5789782 A JP S5789782A
Authority
JP
Japan
Prior art keywords
photoreceptor
toner
charge
exposed
transfer
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
JP16557780A
Other languages
Japanese (ja)
Inventor
Hidefumi Kanai
Shigeru Shimizu
Shigeki Kaneko
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 Finetech Nisca Inc
Original Assignee
Copyer 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 Copyer Co Ltd filed Critical Copyer Co Ltd
Priority to JP16557780A priority Critical patent/JPS5789782A/en
Publication of JPS5789782A publication Critical patent/JPS5789782A/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
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/14—Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base
    • G03G15/16—Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base of a toner pattern, e.g. a powder pattern, e.g. magnetic transfer
    • G03G15/169—Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base of a toner pattern, e.g. a powder pattern, e.g. magnetic transfer with means for preconditioning the toner image before the transfer

Landscapes

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

Abstract

PURPOSE:To transfer single-component magnetic toner excellently without dirtying a ground, by performing the transfer after performing the AC corona discharge of the surface of a photoreceptor after development. CONSTITUTION:A photoreceptor 2 is charged positively (A) and then exposed (B) to reduce the charge of an exposed part (b) while the charge of an unexposed part (a) is held as it is. When development (C) is done with single-component magnetic toner, the toner sticks to the unexposed part (a) and some toner also sticks to the exposed part (b) as well. In this state, when the AC corona discharge (D) of the photoreceptor is performed, a much negative current flows into the photoreceptor of the unexposed part (a), so the potential of the photoreceptor falls and the toner is also charged negatively. Although the AC corona current of the exposed part (b) does not vary much, the photoreceptor surface charge is neutralized to neutralize the negative charge of the toner or to charge it positively. Consequently, the transfer characteristics of the unexposed part improve and those of the exposed part deteriorate.
JP16557780A 1980-11-25 1980-11-25 Improving method for transfer characteristic of elecronic copying machine Pending JPS5789782A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16557780A JPS5789782A (en) 1980-11-25 1980-11-25 Improving method for transfer characteristic of elecronic copying machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16557780A JPS5789782A (en) 1980-11-25 1980-11-25 Improving method for transfer characteristic of elecronic copying machine

Publications (1)

Publication Number Publication Date
JPS5789782A true JPS5789782A (en) 1982-06-04

Family

ID=15814994

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16557780A Pending JPS5789782A (en) 1980-11-25 1980-11-25 Improving method for transfer characteristic of elecronic copying machine

Country Status (1)

Country Link
JP (1) JPS5789782A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6143773A (en) * 1984-08-07 1986-03-03 Canon Inc Image forming device
JPH01302285A (en) * 1987-12-11 1989-12-06 Moore Business Forms Inc Non-impact type image former and method therefor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6143773A (en) * 1984-08-07 1986-03-03 Canon Inc Image forming device
JPH01302285A (en) * 1987-12-11 1989-12-06 Moore Business Forms Inc Non-impact type image former and method therefor

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