JPS5691253A - Charger of electrophotographic copier - Google Patents

Charger of electrophotographic copier

Info

Publication number
JPS5691253A
JPS5691253A JP16853579A JP16853579A JPS5691253A JP S5691253 A JPS5691253 A JP S5691253A JP 16853579 A JP16853579 A JP 16853579A JP 16853579 A JP16853579 A JP 16853579A JP S5691253 A JPS5691253 A JP S5691253A
Authority
JP
Japan
Prior art keywords
applies
output terminal
rectifying circuit
contact
feed
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
JP16853579A
Other languages
Japanese (ja)
Other versions
JPS6249625B2 (en
Inventor
Takeshi Ueno
Hideo Mukai
Kichiji Nakatomi
Hiroshi Saito
Koichi Kinoshita
Takaaki Konuma
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP16853579A priority Critical patent/JPS5691253A/en
Priority to DE3048141A priority patent/DE3048141C2/en
Priority to US06/218,444 priority patent/US4387980A/en
Publication of JPS5691253A publication Critical patent/JPS5691253A/en
Publication of JPS6249625B2 publication Critical patent/JPS6249625B2/ja
Granted legal-status Critical Current

Links

Abstract

PURPOSE: To enable uniform charging performance to be obtained continuously by providing plural contact charging elements in contact with a photoreceptor and feed means applying different voltages to these contact charging elements.
CONSTITUTION: A power source device 30 applying voltage to feed brushes 29a, 29b, 29c is illustrated. A ferro-resonance transformer 31, and a rectifying circuit 32 having a diode 33a and a capacitor 33b are provided. Hence, the transformer 31 transforms the AC voltage applied to input terminals 34, 35 and applies the same to output terminal 37 and also applies the same to the rectifying circuit 32 which applies the transformed AC power supply to the output terminal 37. These output terminals 36, 37 are electrically connected to the 1stW3rd charging rollers 20, 21, 22, and are connected via plural resistances 38, 39, 40 to feed brushes 29a, 29b, 29c.
COPYRIGHT: (C)1981,JPO&Japio
JP16853579A 1979-12-25 1979-12-25 Charger of electrophotographic copier Granted JPS5691253A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP16853579A JPS5691253A (en) 1979-12-25 1979-12-25 Charger of electrophotographic copier
DE3048141A DE3048141C2 (en) 1979-12-25 1980-12-19 Device for uniformly charging a photoconductive recording material
US06/218,444 US4387980A (en) 1979-12-25 1980-12-19 Charging device for electronic copier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16853579A JPS5691253A (en) 1979-12-25 1979-12-25 Charger of electrophotographic copier

Publications (2)

Publication Number Publication Date
JPS5691253A true JPS5691253A (en) 1981-07-24
JPS6249625B2 JPS6249625B2 (en) 1987-10-20

Family

ID=15869814

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16853579A Granted JPS5691253A (en) 1979-12-25 1979-12-25 Charger of electrophotographic copier

Country Status (1)

Country Link
JP (1) JPS5691253A (en)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01307776A (en) * 1988-06-06 1989-12-12 Matsushita Electric Ind Co Ltd Color electrophotographic device
US5060014A (en) * 1989-04-05 1991-10-22 Canon Kabushiki Kaisha Image forming apparatus and detachable process kit utilizing a drum charging means in relatively light contact pressure therewith
US5146280A (en) * 1990-02-17 1992-09-08 Canon Kabushiki Kaisha Charging device
US5321472A (en) * 1990-01-24 1994-06-14 Canon Kabushiki Kaisha Charging member with a bridging electrode structure and charging device using same in an image forming apparatus
US5323215A (en) * 1991-04-10 1994-06-21 Tokyo Electric Co., Ltd. Charging members for charging a photosensitive body without removing used toner from the body
US5426488A (en) * 1992-10-19 1995-06-20 Sharp Kabushiki Kaisha Method of charging a built-in electrophotographic charge member
US5440374A (en) * 1992-05-29 1995-08-08 Canon Kabushiki Kaisha Charging device, image forming apparatus and process cartridge detachably mountable to image forming apparatus
US5534344A (en) * 1992-01-30 1996-07-09 Canon Kabushiki Kaisha Charging member having a loosely supported charger portion
US5561502A (en) * 1994-03-26 1996-10-01 Canon Kabushiki Kaisha Image forming apparatus
US6493529B1 (en) 1999-07-05 2002-12-10 Ricoh Company, Ltd. Charging device with walls surrounding the electrodes which reduce ozone emissions
US6703094B2 (en) 2000-11-08 2004-03-09 Canon Kasei Kabushiki Kaisha Charging member, process cartridge and electrophotographic apparatus
US7035572B2 (en) * 2003-10-31 2006-04-25 Hewlett-Packard Development Company, L.P. Hard imaging device charging systems, electrophotography charging systems, hard imaging apparatuses, and hard imaging device electrophotography charging methods
US20090232530A1 (en) * 2008-02-28 2009-09-17 Canon Kabushiki Kaisha Image forming apparatus
US7835668B2 (en) 2004-11-24 2010-11-16 Hewlett-Packard Development Company, L.P. Imaging methods, imaging member charging methods, and image engines
JP2012173407A (en) * 2011-02-18 2012-09-10 Fuji Xerox Co Ltd Image forming apparatus

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS494353U (en) * 1972-04-14 1974-01-16
JPS50843A (en) * 1973-04-28 1975-01-07
JPS54124545A (en) * 1978-03-20 1979-09-27 Matsushita Electric Works Ltd Drainer for simple fulsh toilet stool

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS494353U (en) * 1972-04-14 1974-01-16
JPS50843A (en) * 1973-04-28 1975-01-07
JPS54124545A (en) * 1978-03-20 1979-09-27 Matsushita Electric Works Ltd Drainer for simple fulsh toilet stool

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01307776A (en) * 1988-06-06 1989-12-12 Matsushita Electric Ind Co Ltd Color electrophotographic device
US5060014A (en) * 1989-04-05 1991-10-22 Canon Kabushiki Kaisha Image forming apparatus and detachable process kit utilizing a drum charging means in relatively light contact pressure therewith
US5321472A (en) * 1990-01-24 1994-06-14 Canon Kabushiki Kaisha Charging member with a bridging electrode structure and charging device using same in an image forming apparatus
US5146280A (en) * 1990-02-17 1992-09-08 Canon Kabushiki Kaisha Charging device
US5323215A (en) * 1991-04-10 1994-06-21 Tokyo Electric Co., Ltd. Charging members for charging a photosensitive body without removing used toner from the body
US5534344A (en) * 1992-01-30 1996-07-09 Canon Kabushiki Kaisha Charging member having a loosely supported charger portion
US5440374A (en) * 1992-05-29 1995-08-08 Canon Kabushiki Kaisha Charging device, image forming apparatus and process cartridge detachably mountable to image forming apparatus
EP0594140A3 (en) * 1992-10-19 1996-10-09 Sharp Kk An electrophotographic charging method
US5426488A (en) * 1992-10-19 1995-06-20 Sharp Kabushiki Kaisha Method of charging a built-in electrophotographic charge member
US5561502A (en) * 1994-03-26 1996-10-01 Canon Kabushiki Kaisha Image forming apparatus
US6493529B1 (en) 1999-07-05 2002-12-10 Ricoh Company, Ltd. Charging device with walls surrounding the electrodes which reduce ozone emissions
US6703094B2 (en) 2000-11-08 2004-03-09 Canon Kasei Kabushiki Kaisha Charging member, process cartridge and electrophotographic apparatus
US7035572B2 (en) * 2003-10-31 2006-04-25 Hewlett-Packard Development Company, L.P. Hard imaging device charging systems, electrophotography charging systems, hard imaging apparatuses, and hard imaging device electrophotography charging methods
US7835668B2 (en) 2004-11-24 2010-11-16 Hewlett-Packard Development Company, L.P. Imaging methods, imaging member charging methods, and image engines
US20090232530A1 (en) * 2008-02-28 2009-09-17 Canon Kabushiki Kaisha Image forming apparatus
JP2012173407A (en) * 2011-02-18 2012-09-10 Fuji Xerox Co Ltd Image forming apparatus

Also Published As

Publication number Publication date
JPS6249625B2 (en) 1987-10-20

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