JP6768210B2 - 現像装置、プロセスカートリッジおよび画像形成装置 - Google Patents

現像装置、プロセスカートリッジおよび画像形成装置 Download PDF

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Publication number
JP6768210B2
JP6768210B2 JP2015237462A JP2015237462A JP6768210B2 JP 6768210 B2 JP6768210 B2 JP 6768210B2 JP 2015237462 A JP2015237462 A JP 2015237462A JP 2015237462 A JP2015237462 A JP 2015237462A JP 6768210 B2 JP6768210 B2 JP 6768210B2
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Japan
Prior art keywords
developer
developing
screw
agent
transfer
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JP2015237462A
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English (en)
Japanese (ja)
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JP2017102383A5 (enExample
JP2017102383A (ja
Inventor
門田　一郎
一郎 門田
真二 田牧
真二 田牧
吉田　圭一
圭一 吉田
細川　浩
浩 細川
加藤　俊次
俊次 加藤
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.)
Ricoh Co Ltd
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Ricoh Co Ltd
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.)
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Publication date
Application filed by Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP2015237462A priority Critical patent/JP6768210B2/ja
Priority to US15/341,272 priority patent/US20170160675A1/en
Publication of JP2017102383A publication Critical patent/JP2017102383A/ja
Publication of JP2017102383A5 publication Critical patent/JP2017102383A5/ja
Application granted granted Critical
Publication of JP6768210B2 publication Critical patent/JP6768210B2/ja
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    • 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
    • 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
    • G03G15/0893—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 in a closed loop within the sump of the developing device
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G21/00—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge
    • G03G21/16—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements
    • G03G21/18—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements using a processing cartridge, whereby the process cartridge comprises at least two image processing means in a single unit
    • 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
    • G03G15/0806—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer on a donor element, e.g. belt, roller
    • G03G15/0808—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer on a donor element, e.g. belt, roller characterised by the developer supplying means, e.g. structure of developer supply roller
    • 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
    • G03G2215/0802—Arrangements for agitating or circulating developer material
    • G03G2215/0836—Way of functioning of agitator means
    • G03G2215/0838—Circulation of developer in a closed loop within the sump of the developing 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
    • G03G2215/08—Details of powder developing device not concerning the development directly
    • G03G2215/0802—Arrangements for agitating or circulating developer material
    • G03G2215/0836—Way of functioning of agitator means
    • G03G2215/0841—Presentation of developer to donor member
    • G03G2215/0844—Presentation of developer to donor member by upward movement of agitator member

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Dry Development In Electrophotography (AREA)
  • Electrophotography Configuration And Component (AREA)
JP2015237462A 2015-12-04 2015-12-04 現像装置、プロセスカートリッジおよび画像形成装置 Active JP6768210B2 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2015237462A JP6768210B2 (ja) 2015-12-04 2015-12-04 現像装置、プロセスカートリッジおよび画像形成装置
US15/341,272 US20170160675A1 (en) 2015-12-04 2016-11-02 Developing device, process cartridge, and image forming apparatus incorporating same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2015237462A JP6768210B2 (ja) 2015-12-04 2015-12-04 現像装置、プロセスカートリッジおよび画像形成装置

Publications (3)

Publication Number Publication Date
JP2017102383A JP2017102383A (ja) 2017-06-08
JP2017102383A5 JP2017102383A5 (enExample) 2018-12-20
JP6768210B2 true JP6768210B2 (ja) 2020-10-14

Family

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JP2015237462A Active JP6768210B2 (ja) 2015-12-04 2015-12-04 現像装置、プロセスカートリッジおよび画像形成装置

Country Status (2)

Country Link
US (1) US20170160675A1 (enExample)
JP (1) JP6768210B2 (enExample)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019028322A (ja) 2017-07-31 2019-02-21 株式会社リコー 現像装置及びプロセスカートリッジ及び画像形成装置
JP7367449B2 (ja) * 2019-10-15 2023-10-24 京セラドキュメントソリューションズ株式会社 現像装置およびそれを備えた画像形成装置
JP2024126564A (ja) 2023-03-07 2024-09-20 株式会社リコー 現像装置、プロセスカートリッジ、及び、画像形成装置

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5948387B2 (ja) * 1977-01-07 1984-11-26 キヤノン株式会社 現像装置
US5491541A (en) * 1992-11-12 1996-02-13 Minolta Camera Kabushiki Kaisha Developing apparatus having adjacent similar magnetic poles
JP3125175B2 (ja) * 1994-07-22 2001-01-15 株式会社日立製作所 現像装置
JPH09325613A (ja) * 1996-06-05 1997-12-16 Hitachi Ltd 現像装置及び画像形成装置
US6449452B1 (en) * 1999-05-10 2002-09-10 Ricoh Company, Ltd. Method and apparatus for image developing capable of using developer in a magnet brush form
JP2001027849A (ja) * 1999-05-10 2001-01-30 Ricoh Co Ltd 現像装置、磁石ローラ及び画像形成装置
US6757509B2 (en) * 2000-05-02 2004-06-29 Ricoh Company, Ltd. Image forming apparatus
US6823163B2 (en) * 2000-05-26 2004-11-23 Ricoh Company, Ltd. Image forming apparatus including an electric field having an oscillation component between an image carrier and a developer carrier
US6597885B2 (en) * 2000-06-05 2003-07-22 Ricoh Company, Ltd. Image forming apparatus having a developing device with a magnet brush
JP2003005530A (ja) * 2001-06-22 2003-01-08 Ricoh Co Ltd 現像装置及び画像形成装置
JP2003084504A (ja) * 2001-07-06 2003-03-19 Ricoh Co Ltd 現像方法及び現像装置、画像形成装置、プロセスカートリッジ

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JP2017102383A (ja) 2017-06-08
US20170160675A1 (en) 2017-06-08

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