DE602007007532D1 - Elektrostatographische Entwicklungseinheit mit mehreren unterschiedlich zusammengesetzten magnetischen Bürstenrollen - Google Patents

Elektrostatographische Entwicklungseinheit mit mehreren unterschiedlich zusammengesetzten magnetischen Bürstenrollen

Info

Publication number
DE602007007532D1
DE602007007532D1 DE602007007532T DE602007007532T DE602007007532D1 DE 602007007532 D1 DE602007007532 D1 DE 602007007532D1 DE 602007007532 T DE602007007532 T DE 602007007532T DE 602007007532 T DE602007007532 T DE 602007007532T DE 602007007532 D1 DE602007007532 D1 DE 602007007532D1
Authority
DE
Germany
Prior art keywords
magnetic brush
development unit
brush rollers
several differently
differently composed
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
DE602007007532T
Other languages
German (de)
English (en)
Inventor
Ajay Kumar
Keith Allan Nau
David A Reed
Hirotsugu Oba
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.)
Xerox Corp
Original Assignee
Xerox 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 Xerox Corp filed Critical Xerox Corp
Publication of DE602007007532D1 publication Critical patent/DE602007007532D1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • G03G15/09—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer using magnetic brush
    • G03G15/0921—Details concerning the magnetic brush roller structure, e.g. magnet configuration
    • G03G15/0928—Details concerning the magnetic brush roller structure, e.g. magnet configuration relating to the shell, e.g. structure, composition
    • 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
    • G03G2215/06—Developing structures, details
    • G03G2215/0634—Developing device
    • G03G2215/0636—Specific type of dry developer device
    • G03G2215/0648—Two or more donor members
    • 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
    • G03G2215/08—Details of powder developing device not concerning the development directly
    • G03G2215/0855—Materials and manufacturing of the developing device
    • G03G2215/0858—Donor member
    • G03G2215/0861—Particular composition or materials

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Magnetic Brush Developing In Electrophotography (AREA)
  • Dry Development In Electrophotography (AREA)
DE602007007532T 2006-03-29 2007-03-27 Elektrostatographische Entwicklungseinheit mit mehreren unterschiedlich zusammengesetzten magnetischen Bürstenrollen Active DE602007007532D1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US11/391,837 US7389073B2 (en) 2006-03-29 2006-03-29 Electrostatographic developer unit having multiple magnetic brush rolls having dissimilar compositions

Publications (1)

Publication Number Publication Date
DE602007007532D1 true DE602007007532D1 (de) 2010-08-19

Family

ID=38123707

Family Applications (1)

Application Number Title Priority Date Filing Date
DE602007007532T Active DE602007007532D1 (de) 2006-03-29 2007-03-27 Elektrostatographische Entwicklungseinheit mit mehreren unterschiedlich zusammengesetzten magnetischen Bürstenrollen

Country Status (6)

Country Link
US (1) US7389073B2 (enExample)
EP (1) EP1840672B1 (enExample)
JP (1) JP2007264637A (enExample)
CN (1) CN101046655A (enExample)
BR (1) BRPI0701294A2 (enExample)
DE (1) DE602007007532D1 (enExample)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4854532B2 (ja) * 2007-01-30 2012-01-18 キヤノン株式会社 現像装置
JP2009244596A (ja) * 2008-03-31 2009-10-22 Sharp Corp 現像装置、画像形成装置
JP2011112935A (ja) * 2009-11-27 2011-06-09 Ricoh Co Ltd 現像装置、プロセスカートリッジ、及び、画像形成装置
JP2012155251A (ja) 2011-01-28 2012-08-16 Canon Inc 現像装置及び画像形成装置
US8652740B2 (en) 2011-01-31 2014-02-18 Eastman Kodak Company Balancing discharge area developed and transferred toner
US8652741B2 (en) 2011-01-31 2014-02-18 Eastman Kodak Company Enhancement of discharged area developed toner layer
US8431313B2 (en) 2011-01-31 2013-04-30 Eastman Kodak Company Balancing charge area developed and transferred toner
US8676072B2 (en) 2011-03-31 2014-03-18 Eastman Kodak Company Ratio modulated printing with charge area development
US8693907B2 (en) 2011-03-31 2014-04-08 Eastman Kodak Company Dual toner printing with discharge area development
US8676074B2 (en) 2011-03-31 2014-03-18 Eastman Kodak Company Method for providing ratio modulated printing with discharge area development
US8693906B2 (en) 2011-03-31 2014-04-08 Eastman Kodak Company Dual toner printing with charge area development
JP5539290B2 (ja) * 2011-11-02 2014-07-02 キヤノン株式会社 画像形成装置
JP2013114081A (ja) * 2011-11-29 2013-06-10 Canon Inc 画像形成装置
JP2013186137A (ja) * 2012-03-05 2013-09-19 Fuji Xerox Co Ltd 現像装置及び画像形成装置
US8774659B2 (en) 2012-04-24 2014-07-08 Eastman Kodak Company Multi-toner discharged area development method
US8805251B2 (en) 2012-04-24 2014-08-12 Eastman Kodak Company Multi-toner charged area development method
US8811864B2 (en) 2012-04-24 2014-08-19 Eastman Kodak Company Printer with multi-toner charged area development
US8805220B2 (en) 2012-04-24 2014-08-12 Eastman Kodak Company Printer with multi-toner discharged area development
JP5987520B2 (ja) * 2012-07-19 2016-09-07 富士ゼロックス株式会社 現像装置及び画像形成装置
JP6108790B2 (ja) * 2012-11-28 2017-04-05 キヤノン株式会社 現像装置

Family Cites Families (32)

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Publication number Priority date Publication date Assignee Title
US4018187A (en) * 1976-06-30 1977-04-19 International Business Machines Corporation Grooved magnetic brush roll
US4098228A (en) * 1976-11-22 1978-07-04 Xerox Corporation High speed magnetic brush development system
JPS579793Y2 (enExample) * 1977-02-24 1982-02-25
US4308821A (en) * 1978-09-22 1982-01-05 Ricoh Company, Ltd. Electrophotographic development apparatus
US4282827A (en) * 1979-09-12 1981-08-11 Xerox Corporation Development system
DE3140478C2 (de) 1980-10-11 1985-03-14 Canon K.K., Tokio/Tokyo Entwicklungsvorrichtung
US4537495A (en) * 1983-07-01 1985-08-27 Zerox Corporation Multispeed development system
JPH0623894B2 (ja) * 1983-09-16 1994-03-30 富士通株式会社 現像装置
US4537494A (en) * 1984-01-26 1985-08-27 Xerox Corporation Multi-roll development system
US4811046A (en) * 1987-07-28 1989-03-07 Xerox Corporation Tri-level highlight color printing apparatus with cycle-up and cycle-down control
JPH03233581A (ja) * 1990-02-09 1991-10-17 Konica Corp 現像装置
US5194905A (en) * 1990-11-29 1993-03-16 Xerox Corporation Color printer apparatus for printing selected portions of latent images in various colors
JPH06202480A (ja) * 1993-01-06 1994-07-22 Hitachi Metals Ltd マグネットロール
JPH08162321A (ja) * 1994-12-01 1996-06-21 Ricoh Co Ltd 画像形成装置の現像装置
US5630201A (en) * 1995-03-10 1997-05-13 Hitachi Koki Co., Ltd. Development apparatus having a plurality of rolls rotated at particular speeds
US5930569A (en) * 1998-08-03 1999-07-27 Xerox Corporation Developer rolls system with reduced edge image defects
JP3483481B2 (ja) * 1998-12-03 2004-01-06 キヤノン株式会社 現像装置
US6269235B1 (en) * 1998-12-02 2001-07-31 Canon Kabushiki Kaisha Developing apparatus featuring first and second developer bearing members each including a non-negative member and a coating member covering the non-negative member
US6292645B1 (en) * 2000-10-03 2001-09-18 Xerox Corporation Apparatus and method for minimizing the halo effect in an electrostatographic printing system
US6353723B1 (en) * 2000-11-28 2002-03-05 Xerox Corporation Electrophotographic development system with induction charged toner
JP2002278269A (ja) * 2000-12-20 2002-09-27 Ricoh Co Ltd 画像形成装置
JP3975319B2 (ja) * 2001-03-02 2007-09-12 富士ゼロックス株式会社 現像装置及びこれを用いた画像形成装置
JP2002351211A (ja) * 2001-05-30 2002-12-06 Canon Inc 現像装置及び画像形成装置
JP2003295599A (ja) 2002-02-04 2003-10-15 Ricoh Co Ltd 現像剤担持体、現像装置、画像形成装置及びプロセスカートリッジ
JP4378143B2 (ja) * 2002-10-07 2009-12-02 キヤノン株式会社 現像装置
US6993274B2 (en) * 2002-11-14 2006-01-31 Canon Kabushiki Kaisha Developing apparatus with plural developer bearing members for each image bearing member
US6965746B2 (en) * 2003-06-17 2005-11-15 Xerox Corporation Hybrid electrophotographic development with toner induction charged via AC induced conductivity
JP4323936B2 (ja) * 2003-12-05 2009-09-02 キヤノン株式会社 現像方法及びトナー
JP2006251775A (ja) * 2005-02-14 2006-09-21 Ricoh Co Ltd 現像剤担持体、現像装置、画像形成装置及びプロセスカートリッジ
US7206538B2 (en) 2005-03-29 2007-04-17 Xerox Corporation Xerographic developer unit with specialized exit port for developer material
US7406279B2 (en) * 2005-10-31 2008-07-29 Xerox Corporation Xerographic developer unit having multiple magnetic brush rolls rotating with the photoreceptor
US7546069B2 (en) * 2005-10-31 2009-06-09 Xerox Corporation Xerographic developer unit having multiple magnetic brush rolls with a grooved surface

Also Published As

Publication number Publication date
JP2007264637A (ja) 2007-10-11
CN101046655A (zh) 2007-10-03
EP1840672A1 (en) 2007-10-03
EP1840672B1 (en) 2010-07-07
US7389073B2 (en) 2008-06-17
BRPI0701294A2 (pt) 2008-11-11
US20070231018A1 (en) 2007-10-04

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