JPS56146156A - Charging system in electrophotography - Google Patents

Charging system in electrophotography

Info

Publication number
JPS56146156A
JPS56146156A JP5107680A JP5107680A JPS56146156A JP S56146156 A JPS56146156 A JP S56146156A JP 5107680 A JP5107680 A JP 5107680A JP 5107680 A JP5107680 A JP 5107680A JP S56146156 A JPS56146156 A JP S56146156A
Authority
JP
Japan
Prior art keywords
negative
voltage
corona
charging
current
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
JP5107680A
Other languages
Japanese (ja)
Inventor
Toshio Ishikawa
Ikuo Ito
Ikuo Ohashi
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.)
Sharp Corp
Original Assignee
Sharp Corp
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 Sharp Corp filed Critical Sharp Corp
Priority to JP5107680A priority Critical patent/JPS56146156A/en
Priority to DE19813115351 priority patent/DE3115351A1/en
Publication of JPS56146156A publication Critical patent/JPS56146156A/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
    • G03G15/0266—Arrangements for controlling the amount of charge
    • 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
    • G03G15/0291—Apparatus for electrographic processes using a charge pattern for laying down a uniform charge, e.g. for sensitising; Corona discharge devices corona discharge devices, e.g. wires, pointed electrodes, means for cleaning the corona discharge device

Abstract

PURPOSE: To enable uniform negative charging using comparatively low voltage, by controlling voltage to be applied to an AC corona discharger so as to increase negative current flowing toward a photoreceptor.
CONSTITUTION: AC voltage is applied to corona discharge wires 10 surrounded with shielding plate 9 of corona charger 2, and the surface of photoreceptor 1 is negatively charged by AC corona discharge. Applying AC voltage to wires 10 of charger 2 produces negative and positive corona discharges alternately, and since negative corona discharge voltage is low, the total current becomes negative. The negative drum current of this total current contributing to charging is controlled by suppressing positive current, such as cutting the peak value of the positive side to a certain value, thus permitting uniform and stable negative charging to be attained.
COPYRIGHT: (C)1981,JPO&Japio
JP5107680A 1980-04-15 1980-04-15 Charging system in electrophotography Pending JPS56146156A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP5107680A JPS56146156A (en) 1980-04-15 1980-04-15 Charging system in electrophotography
DE19813115351 DE3115351A1 (en) 1980-04-15 1981-04-15 Copier/printer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5107680A JPS56146156A (en) 1980-04-15 1980-04-15 Charging system in electrophotography

Publications (1)

Publication Number Publication Date
JPS56146156A true JPS56146156A (en) 1981-11-13

Family

ID=12876710

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5107680A Pending JPS56146156A (en) 1980-04-15 1980-04-15 Charging system in electrophotography

Country Status (2)

Country Link
JP (1) JPS56146156A (en)
DE (1) DE3115351A1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE35581E (en) * 1986-12-15 1997-08-12 Canon Kabushiki Kaisha Charging device
US7715742B2 (en) * 2006-12-22 2010-05-11 Xerox Corporation Photoconductor life through active control of charger settings
US8306443B2 (en) 2009-06-26 2012-11-06 Xerox Corporation Multi-color printing system and method for reducing the transfer field through closed-loop controls
US8452201B2 (en) 2009-11-04 2013-05-28 Xerox Corporation Dynamic field transfer control in first transfer
US8548621B2 (en) 2011-01-31 2013-10-01 Xerox Corporation Production system control model updating using closed loop design of experiments

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS493594A (en) * 1972-04-19 1974-01-12
JPS4937864A (en) * 1972-08-11 1974-04-08
JPS5030726B1 (en) * 1967-01-13 1975-10-03

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3714531A (en) * 1970-06-26 1973-01-30 Canon Kk Ac corona discharger
JPS4937864B1 (en) * 1970-10-02 1974-10-12
JPS597106B2 (en) * 1976-05-19 1984-02-16 キヤノン株式会社 electrophotography
JPS54139736A (en) * 1978-04-21 1979-10-30 Sharp Corp Electrophotographic copier

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5030726B1 (en) * 1967-01-13 1975-10-03
JPS493594A (en) * 1972-04-19 1974-01-12
JPS4937864A (en) * 1972-08-11 1974-04-08

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE35581E (en) * 1986-12-15 1997-08-12 Canon Kabushiki Kaisha Charging device
US7715742B2 (en) * 2006-12-22 2010-05-11 Xerox Corporation Photoconductor life through active control of charger settings
US8306443B2 (en) 2009-06-26 2012-11-06 Xerox Corporation Multi-color printing system and method for reducing the transfer field through closed-loop controls
US8452201B2 (en) 2009-11-04 2013-05-28 Xerox Corporation Dynamic field transfer control in first transfer
US8548621B2 (en) 2011-01-31 2013-10-01 Xerox Corporation Production system control model updating using closed loop design of experiments

Also Published As

Publication number Publication date
DE3115351A1 (en) 1982-04-01

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