DE3308756C2 - Trockenentwicklungseinrichtung - Google Patents

Trockenentwicklungseinrichtung

Info

Publication number
DE3308756C2
DE3308756C2 DE3308756A DE3308756A DE3308756C2 DE 3308756 C2 DE3308756 C2 DE 3308756C2 DE 3308756 A DE3308756 A DE 3308756A DE 3308756 A DE3308756 A DE 3308756A DE 3308756 C2 DE3308756 C2 DE 3308756C2
Authority
DE
Germany
Prior art keywords
toner
housing
brush
drum
sealing
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
Application number
DE3308756A
Other languages
German (de)
English (en)
Other versions
DE3308756A1 (de
Inventor
Hiroyuki Sagamihara Kanagawa Akamatsu
Takashi Ikeda
Noboru Yokohama Kanagawa Sawayama
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
Priority claimed from JP3914082A external-priority patent/JPS58156972A/ja
Priority claimed from JP4652582A external-priority patent/JPS58163969A/ja
Application filed by Ricoh Co Ltd filed Critical Ricoh Co Ltd
Publication of DE3308756A1 publication Critical patent/DE3308756A1/de
Application granted granted Critical
Publication of DE3308756C2 publication Critical patent/DE3308756C2/de
Expired 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
    • G03G15/0896—Arrangements or disposition of the complete developer unit or parts thereof not provided for by groups G03G15/08 - G03G15/0894
    • G03G15/0898—Arrangements or disposition of the complete developer unit or parts thereof not provided for by groups G03G15/08 - G03G15/0894 for preventing toner scattering during operation, e.g. seals

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Dry Development In Electrophotography (AREA)
DE3308756A 1982-03-12 1983-03-11 Trockenentwicklungseinrichtung Expired DE3308756C2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP3914082A JPS58156972A (ja) 1982-03-12 1982-03-12 乾式現像装置
JP4652582A JPS58163969A (ja) 1982-03-24 1982-03-24 乾式現像装置

Publications (2)

Publication Number Publication Date
DE3308756A1 DE3308756A1 (de) 1983-09-22
DE3308756C2 true DE3308756C2 (de) 1987-04-09

Family

ID=26378470

Family Applications (2)

Application Number Title Priority Date Filing Date
DE3308756A Expired DE3308756C2 (de) 1982-03-12 1983-03-11 Trockenentwicklungseinrichtung
DE3348064A Expired DE3348064C2 (OSRAM) 1982-03-12 1983-03-11

Family Applications After (1)

Application Number Title Priority Date Filing Date
DE3348064A Expired DE3348064C2 (OSRAM) 1982-03-12 1983-03-11

Country Status (2)

Country Link
US (1) US4592653A (OSRAM)
DE (2) DE3308756C2 (OSRAM)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3543122A1 (de) * 1984-12-10 1986-06-12 Sharp K.K., Osaka Entwicklungsvorrichtung
US4878088A (en) * 1985-07-02 1989-10-31 Fujitsu Limited Developing unit of electrophotographic apparatus
US4804995A (en) * 1985-07-31 1989-02-14 Kabushiki Kaisha Toshiba Charged latent image developing apparatus
JP2531133B2 (ja) * 1985-10-07 1996-09-04 ミノルタ株式会社 現像装置
US4800411A (en) * 1986-04-10 1989-01-24 Ricoh Company, Ltd. Magnetic brush development device for electrostatic latent images
JPH07107619B2 (ja) * 1986-06-10 1995-11-15 ミノルタ株式会社 現像装置
JPS63108369A (ja) * 1986-10-24 1988-05-13 Canon Inc 乾式現像装置
US4829338A (en) * 1988-01-29 1989-05-09 Xerox Corporation Electrophotographic device with improved bead pickoff arrangement
US4955316A (en) * 1988-08-08 1990-09-11 Sharp Kabushiki Kaisha Developing device
US5097294A (en) * 1989-03-20 1992-03-17 Fujitsu Limited Developing device used in electrophotographic field with a one-component developer and having a blade member for developer layer thickness regulation
DE69825505T8 (de) 1997-01-31 2005-05-04 Seiko Epson Corp. Entwicklereinheit
JP3432752B2 (ja) * 1998-09-29 2003-08-04 シャープ株式会社 現像装置
JP2000267429A (ja) * 1999-03-16 2000-09-29 Kyocera Mita Corp 画像形成装置
US20040251435A1 (en) * 2003-04-07 2004-12-16 Noboru Sawayama Optical sensor and image forming apparatus
US7415230B2 (en) * 2003-06-17 2008-08-19 Canon Kabushiki Kaisha Developing apparatus featuring an insulating or electrically floating jumping developer regulation member
KR101741045B1 (ko) * 2010-09-10 2017-05-29 에스프린팅솔루션 주식회사 현상 카트리지 및 이를 채용한 화상형성장치
US9658576B2 (en) * 2014-12-11 2017-05-23 Ricoh Company, Ltd. Developing device, and process cartridge and image forming apparatus incorporating same
US10534291B2 (en) * 2017-10-26 2020-01-14 Hewlett-Packard Development Company, L.P. Image forming system with developer retainer

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3900002A (en) * 1972-05-10 1975-08-19 Xerox Corp Donor apparatus
US3872826A (en) * 1973-10-23 1975-03-25 Xerox Corp Development system seal
US3863603A (en) * 1974-01-07 1975-02-04 Ibm Magnetic brush roll having resilient polymeric surface
DE2636932A1 (de) * 1976-08-16 1978-02-23 Eskofot Research As Bepulverungsvorrichtung fuer elektrostatische kopiergeraete
US4351604A (en) * 1979-04-26 1982-09-28 Ricoh Company, Ltd. Multi-color electrostatic copying apparatus
US4324483A (en) * 1979-08-21 1982-04-13 Ricoh Company, Ltd. Magnetic brush development apparatus
JPS6232298Y2 (OSRAM) * 1980-06-04 1987-08-18
JPS57103447U (OSRAM) * 1980-12-17 1982-06-25

Also Published As

Publication number Publication date
US4592653A (en) 1986-06-03
DE3308756A1 (de) 1983-09-22
DE3348064C2 (OSRAM) 1987-11-26

Similar Documents

Publication Publication Date Title
DE3308756C2 (de) Trockenentwicklungseinrichtung
DE2842516C3 (de) Entwicklungseinrichtung für ein elektrophotographisches Kopiergerät
DE3528366C2 (de) Einrichtung zum Entwickeln eines elektrostatischen, latenten Bildes
DE3612663C2 (OSRAM)
DE2839178C2 (OSRAM)
DE3439678C2 (OSRAM)
DE2909192C2 (de) Magnetbürsten-Entwicklungseinrichtung für ein elektrostatisches Kopiergerät
DE3148231C2 (OSRAM)
DE3047659A1 (de) Verfahren zum entwickeln elektrostatischer ladungsbilder und kopiergeraet zur durchfuehrung des verfahrens
DE2732172C2 (de) Entwicklungseinrichtung für elektrostatische Ladungsbilder
DE2423414C3 (de) Vorrichtung zur Rückführung von Trockenentwicklerriickständen
DE3314255A1 (de) Koronaladeeinrichtung
DE3225883C2 (de) Entwicklungseinrichtung für ein Kopiergerät
DE2336499A1 (de) Vorrichtung zur verhinderung einer entwicklung von hintergrundbereichen bei einem kopiergeraet
DE3329497A1 (de) Entwicklungsvorrichtung
DE3029254A1 (de) Elektrofotografisches kopiergeraet
DE2803200C2 (de) Vorrichtung zur Entwicklung eines elektrostatischen Ladungsbildes
DE2626089B2 (de) Elektrofotografisches Kopiergerät mit einer Reinigungseinrichtung
DE3022774A1 (de) Methode zum entfernen von fremdmaterial aus einem magnetischen entwickler
DE3333922A1 (de) Reinigungseinrichtung
DE3784178T2 (de) Entwicklersystem fuer reproduktions- und kopiergeraete.
DE1597901B2 (de) Entwicklungseinrichtung fuer elektrostatische ladungsbilder
DE3543122C2 (OSRAM)
DE3232342C2 (de) Magnetbürsten-Entwicklungseinrichtung für elektrografische Bildgeräte
EP0008040B1 (de) Magnetbürsten-Entwicklungsvorrichtung für elektrostatische Ladungsbilder

Legal Events

Date Code Title Description
OP8 Request for examination as to paragraph 44 patent law
8128 New person/name/address of the agent

Representative=s name: SCHWABE, H., DIPL.-ING. SANDMAIR, K., DIPL.-CHEM.

8172 Supplementary division/partition in:

Ref country code: DE

Ref document number: 3348064

Format of ref document f/p: P

Q171 Divided out to:

Ref country code: DE

Ref document number: 3348064

8181 Inventor (new situation)

Free format text: IKEDA, TAKASHI SAWAYAMA, NOBORU, YOKOHAMA, KANAGAWA, JP AKAMATSU, HIROYUKI, SAGAMIHARA, KANAGAWA, JP

8181 Inventor (new situation)

Free format text: IKEDA, TAKASHI SAWAYAMA, NOBORU, YOKOHAMA, KANAGAWA, JP AKAMATSU, HIROYUKI, SAGAMIHARA, KANAGAWA, JP

AH Division in

Ref country code: DE

Ref document number: 3348064

Format of ref document f/p: P

D2 Grant after examination
8364 No opposition during term of opposition
AH Division in

Ref country code: DE

Ref document number: 3348064

Format of ref document f/p: P