JP7336230B2 - 画像形成装置 - Google Patents

画像形成装置 Download PDF

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Publication number
JP7336230B2
JP7336230B2 JP2019061880A JP2019061880A JP7336230B2 JP 7336230 B2 JP7336230 B2 JP 7336230B2 JP 2019061880 A JP2019061880 A JP 2019061880A JP 2019061880 A JP2019061880 A JP 2019061880A JP 7336230 B2 JP7336230 B2 JP 7336230B2
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JP
Japan
Prior art keywords
developing
image forming
image
photosensitive drum
voltage
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.)
Active
Application number
JP2019061880A
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English (en)
Japanese (ja)
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JP2020160361A5 (US07534539-20090519-C00280.png
JP2020160361A (ja
Inventor
良介 金井
慎 深津
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 JP2019061880A priority Critical patent/JP7336230B2/ja
Priority to US16/817,020 priority patent/US11435675B2/en
Publication of JP2020160361A publication Critical patent/JP2020160361A/ja
Publication of JP2020160361A5 publication Critical patent/JP2020160361A5/ja
Application granted granted Critical
Publication of JP7336230B2 publication Critical patent/JP7336230B2/ja
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • G03G15/043—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 controlling illumination or exposure
    • 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
    • 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
    • G03G15/06—Apparatus for electrographic processes using a charge pattern for developing
    • G03G15/065—Arrangements for controlling the potential of the developing electrode
    • 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
    • G03G2215/0465—Developing conditions changed to produce a clean non-image area

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Control Or Security For Electrophotography (AREA)
  • Engineering & Computer Science (AREA)
  • Discharging, Photosensitive Material Shape In Electrophotography (AREA)
  • Exposure Or Original Feeding In Electrophotography (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Plasma & Fusion (AREA)
JP2019061880A 2019-03-27 2019-03-27 画像形成装置 Active JP7336230B2 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2019061880A JP7336230B2 (ja) 2019-03-27 2019-03-27 画像形成装置
US16/817,020 US11435675B2 (en) 2019-03-27 2020-03-12 Image forming apparatus with fog suppression feature

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2019061880A JP7336230B2 (ja) 2019-03-27 2019-03-27 画像形成装置

Publications (3)

Publication Number Publication Date
JP2020160361A JP2020160361A (ja) 2020-10-01
JP2020160361A5 JP2020160361A5 (US07534539-20090519-C00280.png) 2022-03-30
JP7336230B2 true JP7336230B2 (ja) 2023-08-31

Family

ID=72605657

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2019061880A Active JP7336230B2 (ja) 2019-03-27 2019-03-27 画像形成装置

Country Status (2)

Country Link
US (1) US11435675B2 (US07534539-20090519-C00280.png)
JP (1) JP7336230B2 (US07534539-20090519-C00280.png)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2023089852A (ja) * 2021-12-16 2023-06-28 キヤノン株式会社 画像形成装置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006091080A (ja) 2004-09-21 2006-04-06 Murata Mach Ltd 画像形成装置
JP2010134205A (ja) 2008-12-04 2010-06-17 Canon Inc 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
US5179411A (en) * 1990-09-11 1993-01-12 Mita Industrial Co., Ltd. Inversion development controller
JPH04204876A (ja) * 1990-11-30 1992-07-27 Mita Ind Co Ltd 反転現像制御装置
JPH07253693A (ja) * 1994-03-15 1995-10-03 Mita Ind Co Ltd 画像形成装置における電位制御方法
JP2001092331A (ja) 1999-09-24 2001-04-06 Konica Corp 画像形成装置及び画像形成方法
JP2004013027A (ja) * 2002-06-10 2004-01-15 Canon Inc 画像形成装置
JP2005345915A (ja) 2004-06-04 2005-12-15 Ricoh Co Ltd 画像形成装置
JP6029455B2 (ja) * 2012-12-21 2016-11-24 キヤノン株式会社 画像形成装置
JP6418959B2 (ja) * 2015-01-19 2018-11-07 キヤノン株式会社 画像形成装置
JP6548429B2 (ja) * 2015-03-31 2019-07-24 キヤノン株式会社 画像形成装置
JP6862125B2 (ja) * 2016-08-12 2021-04-21 キヤノン株式会社 画像形成装置

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006091080A (ja) 2004-09-21 2006-04-06 Murata Mach Ltd 画像形成装置
JP2010134205A (ja) 2008-12-04 2010-06-17 Canon Inc 画像形成装置

Also Published As

Publication number Publication date
US11435675B2 (en) 2022-09-06
US20200310275A1 (en) 2020-10-01
JP2020160361A (ja) 2020-10-01

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