JPS5691253A - Charger of electrophotographic copier - Google Patents
Charger of electrophotographic copierInfo
- 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
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
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)
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)
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 |
-
1979
- 1979-12-25 JP JP16853579A patent/JPS5691253A/en active Granted
Patent Citations (3)
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)
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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