EP2626748A3 - Toner supplying unit and image forming apparatus - Google Patents

Toner supplying unit and image forming apparatus Download PDF

Info

Publication number
EP2626748A3
EP2626748A3 EP13153574.2A EP13153574A EP2626748A3 EP 2626748 A3 EP2626748 A3 EP 2626748A3 EP 13153574 A EP13153574 A EP 13153574A EP 2626748 A3 EP2626748 A3 EP 2626748A3
Authority
EP
European Patent Office
Prior art keywords
toner
supplying unit
gap
image forming
forming apparatus
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.)
Withdrawn
Application number
EP13153574.2A
Other languages
German (de)
French (fr)
Other versions
EP2626748A2 (en
Inventor
Kazuaki Kamihara
Jun Yura
Yukiko Iwasaki
Jun Shiori
Masaki Sukesako
Takuya Suganuma
Hiroyuki Sugiyama
Hironobu Takeshita
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
Original Assignee
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.)
Filing date
Publication date
Application filed by Ricoh Co Ltd filed Critical Ricoh Co Ltd
Publication of EP2626748A2 publication Critical patent/EP2626748A2/en
Publication of EP2626748A3 publication Critical patent/EP2626748A3/en
Withdrawn legal-status Critical Current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
    • G03G15/0877—Arrangements for metering and dispensing developer from a developer cartridge into the development unit
    • G03G15/0879—Arrangements for metering and dispensing developer from a developer cartridge into the development unit for dispensing developer from a developer cartridge not directly attached to the development unit

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Dry Development In Electrophotography (AREA)
  • Developing Agents For Electrophotography (AREA)
  • Rotary Pumps (AREA)

Abstract

In the present invention, a toner supplying unit (130) includes a powder pump (131) and houses therein toner transferred by the powder pump (131). The powder pump (131) includes a stator (132) having a through hole (106) formed of a groove extending helically and a rotor (135) having a helical groove formed on the outer circumferential surface thereof such that a gap (G) for transferring the toner is formed between the helical groove and the inner circumferential surface of the through hole (106), and transfers the toner entering the gap (G) by rotating the rotor (135) and moving the gap (G). To the toner, inorganic fine particles with a volume-average particle diameter of equal to or larger than 30 nm are externally added.
EP13153574.2A 2012-02-07 2013-02-01 Toner supplying unit and image forming apparatus Withdrawn EP2626748A3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2012024082A JP2013174630A (en) 2012-01-23 2012-02-07 Toner supply device and image forming apparatus

Publications (2)

Publication Number Publication Date
EP2626748A2 EP2626748A2 (en) 2013-08-14
EP2626748A3 true EP2626748A3 (en) 2017-04-12

Family

ID=47715864

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13153574.2A Withdrawn EP2626748A3 (en) 2012-02-07 2013-02-01 Toner supplying unit and image forming apparatus

Country Status (3)

Country Link
EP (1) EP2626748A3 (en)
JP (1) JP2013174630A (en)
CN (1) CN103246189A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7331575B2 (en) * 2019-09-19 2023-08-23 富士フイルムビジネスイノベーション株式会社 Electrostatic charge image developing toner, electrostatic charge image developer, toner cartridge, process cartridge, image forming apparatus and image forming method

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060029433A1 (en) * 2004-07-29 2006-02-09 Takuya Saito Toner and toner cartridge
JP2008152099A (en) * 2006-12-19 2008-07-03 Ricoh Co Ltd Developing device, image forming apparatus, carrier, toner and developer
US20090142686A1 (en) * 2007-11-30 2009-06-04 Satoshi Kojima Image forming method, toner and image forming apparatus
JP2011039249A (en) * 2009-08-10 2011-02-24 Ricoh Co Ltd Developing device and image forming apparatus

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61179887A (en) 1985-09-09 1986-08-12 Koji Fujimori Rust remover
JP4213067B2 (en) * 2003-03-19 2009-01-21 株式会社リコー Image forming toner and developer, method for producing the same, image forming method using the same, and image forming apparatus
JP2006208431A (en) * 2005-01-25 2006-08-10 Ricoh Co Ltd Toner, usage of toner, toner-replenishing device, and image forming apparatus
JP5261863B2 (en) * 2005-06-20 2013-08-14 株式会社リコー Image forming apparatus, process cartridge, and lubricant block

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060029433A1 (en) * 2004-07-29 2006-02-09 Takuya Saito Toner and toner cartridge
JP2008152099A (en) * 2006-12-19 2008-07-03 Ricoh Co Ltd Developing device, image forming apparatus, carrier, toner and developer
US20090142686A1 (en) * 2007-11-30 2009-06-04 Satoshi Kojima Image forming method, toner and image forming apparatus
JP2011039249A (en) * 2009-08-10 2011-02-24 Ricoh Co Ltd Developing device and image forming apparatus

Also Published As

Publication number Publication date
CN103246189A (en) 2013-08-14
EP2626748A2 (en) 2013-08-14
JP2013174630A (en) 2013-09-05

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