JPS5749965A - Friction charger - Google Patents

Friction charger

Info

Publication number
JPS5749965A
JPS5749965A JP12658980A JP12658980A JPS5749965A JP S5749965 A JPS5749965 A JP S5749965A JP 12658980 A JP12658980 A JP 12658980A JP 12658980 A JP12658980 A JP 12658980A JP S5749965 A JPS5749965 A JP S5749965A
Authority
JP
Japan
Prior art keywords
drum
charger
friction
contamination
friction member
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
JP12658980A
Other languages
Japanese (ja)
Inventor
Nagao Hosono
Hatsuo Tajima
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 JP12658980A priority Critical patent/JPS5749965A/en
Publication of JPS5749965A publication Critical patent/JPS5749965A/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
    • G03G15/02—Apparatus for electrographic processes using a charge pattern for laying down a uniform charge, e.g. for sensitising; Corona discharge devices
    • G03G15/0208—Apparatus for electrographic processes using a charge pattern for laying down a uniform charge, e.g. for sensitising; Corona discharge devices by contact, friction or induction, e.g. liquid charging apparatus
    • G03G15/0216—Apparatus for electrographic processes using a charge pattern for laying down a uniform charge, e.g. for sensitising; Corona discharge devices by contact, friction or induction, e.g. liquid charging apparatus by bringing a charging member into contact with the member to be charged, e.g. roller, brush chargers

Abstract

PURPOSE:To perform invariably stable charging through preventing the contamination of a friction member by attaching and detaching a friction discharger to and from a photosensitive drum as desired. CONSTITUTION:A friction charger is provided so that a friction charger 2 charing a photosensitive drum 1 is moved in the direction shown by an arrow (c), causing a friction member at least to be detached from the surface of the drum 1. In this constitution, residual toner on the drum 1 after transfer is removed by a two-component magnetic brush development device 6, but when the residual toner turns until the position of the charger 2, the charger 2 is moved away from the drum 1. Consequently, the contamination of the friction member is prevented, so the contamination of the drum 1 is also prevented to eliminate ground fogging, thereby performing invariably stable charging.
JP12658980A 1980-09-11 1980-09-11 Friction charger Pending JPS5749965A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12658980A JPS5749965A (en) 1980-09-11 1980-09-11 Friction charger

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12658980A JPS5749965A (en) 1980-09-11 1980-09-11 Friction charger

Publications (1)

Publication Number Publication Date
JPS5749965A true JPS5749965A (en) 1982-03-24

Family

ID=14938913

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12658980A Pending JPS5749965A (en) 1980-09-11 1980-09-11 Friction charger

Country Status (1)

Country Link
JP (1) JPS5749965A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61109067A (en) * 1984-10-29 1986-05-27 ゼロツクス　コーポレーシヨン Contact brush charging apparatus and method
US4706320A (en) * 1985-12-04 1987-11-17 Xerox Corporation Electrostatic charging and cleaning brushes
JPH0239169A (en) * 1988-07-29 1990-02-08 Canon Inc Contact electrifying device
JPH02301778A (en) * 1989-05-16 1990-12-13 Canon Inc Image forming device
JPH05341625A (en) * 1992-06-04 1993-12-24 Sharp Corp Image forming device of electrophotographic process
US5552865A (en) * 1993-02-09 1996-09-03 Minolta Camera Kabushiki Kaisha Charging device and method for charging a charge-receiving member by a charging member by discharge therebetween based on difference in electric potential between the charging member and the charge-receiving member

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50123435A (en) * 1974-03-15 1975-09-27

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50123435A (en) * 1974-03-15 1975-09-27

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61109067A (en) * 1984-10-29 1986-05-27 ゼロツクス　コーポレーシヨン Contact brush charging apparatus and method
US4706320A (en) * 1985-12-04 1987-11-17 Xerox Corporation Electrostatic charging and cleaning brushes
JPH0239169A (en) * 1988-07-29 1990-02-08 Canon Inc Contact electrifying device
JPH02301778A (en) * 1989-05-16 1990-12-13 Canon Inc Image forming device
JPH05341625A (en) * 1992-06-04 1993-12-24 Sharp Corp Image forming device of electrophotographic process
US5552865A (en) * 1993-02-09 1996-09-03 Minolta Camera Kabushiki Kaisha Charging device and method for charging a charge-receiving member by a charging member by discharge therebetween based on difference in electric potential between the charging member and the charge-receiving member

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