DE69941381D1 - Entwicklungsvorrichtung und Bilderzeugungsgerät - Google Patents

Entwicklungsvorrichtung und Bilderzeugungsgerät

Info

Publication number
DE69941381D1
DE69941381D1 DE69941381T DE69941381T DE69941381D1 DE 69941381 D1 DE69941381 D1 DE 69941381D1 DE 69941381 T DE69941381 T DE 69941381T DE 69941381 T DE69941381 T DE 69941381T DE 69941381 D1 DE69941381 D1 DE 69941381D1
Authority
DE
Germany
Prior art keywords
image forming
forming apparatus
developing device
developing
image
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 - Lifetime
Application number
DE69941381T
Other languages
English (en)
Inventor
Yoshiaki Kobayashi
Masaru Hibino
Masanori Shida
Ichiro Ozawa
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
Priority claimed from JP17539798A external-priority patent/JPH11352764A/ja
Priority claimed from JP10242542A external-priority patent/JP2000056555A/ja
Application filed by Canon Inc filed Critical Canon Inc
Application granted granted Critical
Publication of DE69941381D1 publication Critical patent/DE69941381D1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • G03G15/06—Apparatus for electrographic processes using a charge pattern for developing
    • G03G15/08—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer
    • G03G15/0822—Arrangements for preparing, mixing, supplying or dispensing developer
    • G03G15/0848—Arrangements for testing or measuring developer properties or quality, e.g. charge, size, flowability
    • G03G15/0849—Detection or control means for the developer concentration
    • G03G15/0853—Detection or control means for the developer concentration the concentration being measured by magnetic means
    • 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
    • G03G15/08—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer
    • G03G15/0822—Arrangements for preparing, mixing, supplying or dispensing developer
    • G03G15/0887—Arrangements for conveying and conditioning developer in the developing unit, e.g. agitating, removing impurities or humidity
    • G03G15/0891—Arrangements for conveying and conditioning developer in the developing unit, e.g. agitating, removing impurities or humidity for conveying or circulating developer, e.g. augers

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Dry Development In Electrophotography (AREA)
  • Magnetic Brush Developing In Electrophotography (AREA)
DE69941381T 1998-06-08 1999-06-07 Entwicklungsvorrichtung und Bilderzeugungsgerät Expired - Lifetime DE69941381D1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP17539798A JPH11352764A (ja) 1998-06-08 1998-06-08 現像装置および画像形成装置
JP10242542A JP2000056555A (ja) 1998-08-13 1998-08-13 現像装置および画像形成装置

Publications (1)

Publication Number Publication Date
DE69941381D1 true DE69941381D1 (de) 2009-10-22

Family

ID=26496689

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69941381T Expired - Lifetime DE69941381D1 (de) 1998-06-08 1999-06-07 Entwicklungsvorrichtung und Bilderzeugungsgerät

Country Status (3)

Country Link
US (1) US6104892A (de)
EP (1) EP0964313B1 (de)
DE (1) DE69941381D1 (de)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3437512B2 (ja) 1999-11-30 2003-08-18 キヤノン株式会社 現像装置
JP2001215763A (ja) 2000-02-01 2001-08-10 Canon Inc 画像形成装置
JP3720720B2 (ja) * 2000-03-01 2005-11-30 キヤノン株式会社 画像形成装置
US6728507B2 (en) * 2000-09-04 2004-04-27 Canon Kabushiki Kaisha Electrostatic image forming apparatus with fluororesin in fixing roller layer
US6973281B2 (en) * 2002-04-26 2005-12-06 Canon Kabushiki Kaisha Developing apparatus with two developing chamber-rotatable member pairs
JP2004093765A (ja) * 2002-08-30 2004-03-25 Konica Minolta Holdings Inc 画像形成装置
JP2005055531A (ja) * 2003-08-06 2005-03-03 Canon Inc 現像装置
US7409170B2 (en) * 2006-03-23 2008-08-05 Kabushiki Kaisha Toshiba Developing apparatus, image forming apparatus and density detection method
JP4298733B2 (ja) * 2006-09-25 2009-07-22 シャープ株式会社 現像剤回収装置およびそれを備える画像形成装置
JP4513845B2 (ja) * 2007-09-19 2010-07-28 富士ゼロックス株式会社 現像装置および画像形成装置
JP2017142452A (ja) * 2016-02-12 2017-08-17 キヤノン株式会社 現像装置

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5532060A (en) * 1978-08-29 1980-03-06 Canon Inc Method and apparatus for electrophotographic developing
US4496644A (en) * 1983-02-28 1985-01-29 Eastman Kodak Company Electric field adjustment for magnetic brushes
JPS61151579A (ja) * 1984-12-25 1986-07-10 Hitachi Metals Ltd 現像装置
JPS61178656A (ja) * 1985-02-04 1986-08-11 Sharp Corp 現像剤の濃度検出装置
JPH0656531B2 (ja) * 1987-02-25 1994-07-27 シャープ株式会社 電子写真プロセスにおける現像装置
US5310425A (en) * 1987-05-19 1994-05-10 Tdk Corporation Toner concentration detector for a two-component developer
US4980728A (en) * 1987-09-04 1990-12-25 Sharp Kabushiki Kaisha Developing device with a magnetic brush turning plate
US4924270A (en) * 1987-10-29 1990-05-08 Minolta Camera Kabushiki Kaisha Toner supply device for use in image forming apparatus
JP2974334B2 (ja) * 1989-08-31 1999-11-10 キヤノン株式会社 現像装置
US5237372A (en) * 1991-03-29 1993-08-17 Fujitsu Limited Toner quantity detecting system for an image recording apparatus, a method of detecting the quantity of toner and a developing device for the image recording apparatus
US5189475A (en) * 1991-08-26 1993-02-23 Xerox Corporation Developer mechanism with sensor and notched auger
JPH0643757A (ja) * 1992-07-24 1994-02-18 Konica Corp 画像記録装置
JP3041173B2 (ja) * 1993-10-01 2000-05-15 キヤノン株式会社 画像形成装置
JPH07222002A (ja) * 1994-02-04 1995-08-18 Fuji Xerox Co Ltd カラー画像形成装置における濃度調整装置
JPH08248764A (ja) * 1995-03-08 1996-09-27 Ricoh Co Ltd 現像装置
JPH09101671A (ja) * 1995-10-05 1997-04-15 Mita Ind Co Ltd 静電潜像現像装置
JPH09152766A (ja) * 1995-11-29 1997-06-10 Mita Ind Co Ltd 現像装置
EP0801334B1 (de) * 1996-04-08 2001-08-29 Canon Kabushiki Kaisha Beschichtete magnetische Trägerteilchen, zwei-Komponententyp-Entwickler und Entwicklungsverfahren
US5870656A (en) * 1996-12-04 1999-02-09 Canon Kabushiki Kaisha Image forming apparatus for effecting development and cleaning by using magnet brush

Also Published As

Publication number Publication date
EP0964313A3 (de) 2001-12-12
US6104892A (en) 2000-08-15
EP0964313B1 (de) 2009-09-09
EP0964313A2 (de) 1999-12-15

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition