DE3850640D1 - Elektrophotografisches Kopiergerät. - Google Patents

Elektrophotografisches Kopiergerät.

Info

Publication number
DE3850640D1
DE3850640D1 DE3850640T DE3850640T DE3850640D1 DE 3850640 D1 DE3850640 D1 DE 3850640D1 DE 3850640 T DE3850640 T DE 3850640T DE 3850640 T DE3850640 T DE 3850640T DE 3850640 D1 DE3850640 D1 DE 3850640D1
Authority
DE
Germany
Prior art keywords
electrophotographic copier
copier
electrophotographic
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.)
Expired - Fee Related
Application number
DE3850640T
Other languages
English (en)
Other versions
DE3850640T2 (de
Inventor
Masahiko Ogura
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
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 filed Critical Toshiba Corp
Application granted granted Critical
Publication of DE3850640D1 publication Critical patent/DE3850640D1/de
Publication of DE3850640T2 publication Critical patent/DE3850640T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • G03G15/04—Apparatus for electrographic processes using a charge pattern for exposing, i.e. imagewise exposure by optically projecting the original image on a photoconductive recording material
    • G03G15/045—Apparatus for electrographic processes using a charge pattern for exposing, i.e. imagewise exposure by optically projecting the original image on a photoconductive recording material with means for charging or discharging distinct portions of the charge pattern on the recording material, e.g. for contrast enhancement or discharging non-image areas
    • G03G15/047—Apparatus for electrographic processes using a charge pattern for exposing, i.e. imagewise exposure by optically projecting the original image on a photoconductive recording material with means for charging or discharging distinct portions of the charge pattern on the recording material, e.g. for contrast enhancement or discharging non-image areas for discharging non-image areas
    • 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
    • G03G15/0258—Apparatus for electrographic processes using a charge pattern for laying down a uniform charge, e.g. for sensitising; Corona discharge devices provided with means for the maintenance of the charging apparatus, e.g. cleaning devices, ozone removing devices G03G15/0225, G03G15/0291 takes precedence
    • 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
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2215/00—Apparatus for electrophotographic processes
    • G03G2215/04—Arrangements for exposing and producing an image
    • G03G2215/0429—Changing or enhancing the image
    • G03G2215/0431—Producing a clean non-image area, i.e. avoiding show-around effects
    • G03G2215/0448—Charge-erasing means for the non-image area
    • G03G2215/0451—Light-emitting array or panel

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Electrostatic Charge, Transfer And Separation In Electrography (AREA)
  • Discharging, Photosensitive Material Shape In Electrophotography (AREA)
  • Exposure Or Original Feeding In Electrophotography (AREA)
  • Control Or Security For Electrophotography (AREA)
DE3850640T 1987-11-30 1988-11-30 Elektrophotografisches Kopiergerät. Expired - Fee Related DE3850640T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62302028A JP2577409B2 (ja) 1987-11-30 1987-11-30 電子複写機

Publications (2)

Publication Number Publication Date
DE3850640D1 true DE3850640D1 (de) 1994-08-18
DE3850640T2 DE3850640T2 (de) 1994-11-24

Family

ID=17904031

Family Applications (1)

Application Number Title Priority Date Filing Date
DE3850640T Expired - Fee Related DE3850640T2 (de) 1987-11-30 1988-11-30 Elektrophotografisches Kopiergerät.

Country Status (4)

Country Link
US (1) US4924268A (de)
EP (1) EP0318951B1 (de)
JP (1) JP2577409B2 (de)
DE (1) DE3850640T2 (de)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62186162U (de) * 1986-05-16 1987-11-26
JP2703651B2 (ja) * 1990-07-02 1998-01-26 シャープ株式会社 複写機の光学系制御装置
JP2769251B2 (ja) * 1991-05-24 1998-06-25 キヤノン株式会社 画像形成装置
JPH0559469U (ja) * 1992-01-20 1993-08-06 富士ゼロックス株式会社 静電印刷装置におけるコロトロンのクリーニング装置
JP2974842B2 (ja) * 1992-01-23 1999-11-10 シャープ株式会社 プロセスコントロール安定化装置
US5392099A (en) * 1992-09-25 1995-02-21 Mita Industrial Co., Ltd. Image forming apparatus having cleaning member for cleaning charging wire
KR950011874B1 (ko) * 1992-12-10 1995-10-11 현대전자산업주식회사 대전선 자동 크리닝 방법 및 그 장치
US5481345A (en) * 1993-08-09 1996-01-02 Mita Industrial Co., Ltd. Image forming apparatus provided with pre-transfer charger
JPH07128956A (ja) * 1993-11-05 1995-05-19 Ricoh Co Ltd 画像形成装置
US5485255A (en) * 1994-08-31 1996-01-16 Eastman Kodak Company Automatic cleaning mechanism for a corona charger using cleaning pad
JPH08142354A (ja) * 1994-11-22 1996-06-04 Ricoh Co Ltd 記録装置
US5765076A (en) * 1995-05-26 1998-06-09 Oki Data Corporation Method and apparatus for forming an electrostatic latent image with toner recovery
JP3361071B2 (ja) * 1999-02-04 2003-01-07 富士通株式会社 帯電器の自動清掃方法および画像形成装置
US7529497B2 (en) * 2005-07-14 2009-05-05 Kabushiki Kaisha Toshiba Charger, process unit and image forming apparatus
JP4428720B2 (ja) * 2007-09-18 2010-03-10 シャープ株式会社 チャージワイヤ清掃装置
JP2020079900A (ja) * 2018-11-14 2020-05-28 キヤノン株式会社 画像形成装置

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3870883A (en) * 1973-09-24 1975-03-11 Xerox Corp Electrostatic printing machine with self-cleaning coronal generating device
US3965400A (en) * 1975-02-24 1976-06-22 Xerox Corporation Corona generating device with improved built-in cleaning mechanism
DE3116421C2 (de) * 1981-04-24 1983-03-31 Siemens AG, 1000 Berlin und 8000 München Anordnung zur Steuerung der Reinigungseinrichtungen in einem nichtmechanischen Druck- oder Kopiergerät
US4566777A (en) * 1982-08-23 1986-01-28 Canon Kabushiki Kaisha Process kit for image forming apparatus
JPS6183563A (ja) * 1984-09-29 1986-04-28 Toshiba Corp 画像形成装置
US4701044A (en) * 1985-01-29 1987-10-20 Konishiroku Photo Ind. Co., Ltd. Image recording apparatus for composing plural partial original images into a single composite image
JPS6291976A (ja) * 1985-10-18 1987-04-27 Canon Inc コロナ放電器
JPS62186162U (de) * 1986-05-16 1987-11-26
JPS6398673A (ja) * 1986-10-15 1988-04-30 Mita Ind Co Ltd 画像形成装置
JPS63153574A (ja) * 1986-12-17 1988-06-25 Ricoh Co Ltd イレ−スクリ−ナ

Also Published As

Publication number Publication date
JP2577409B2 (ja) 1997-01-29
EP0318951A3 (en) 1989-10-18
DE3850640T2 (de) 1994-11-24
US4924268A (en) 1990-05-08
JPH01142742A (ja) 1989-06-05
EP0318951A2 (de) 1989-06-07
EP0318951B1 (de) 1994-07-13

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee