JPS57116372A - Developing device - Google Patents

Developing device

Info

Publication number
JPS57116372A
JPS57116372A JP271481A JP271481A JPS57116372A JP S57116372 A JPS57116372 A JP S57116372A JP 271481 A JP271481 A JP 271481A JP 271481 A JP271481 A JP 271481A JP S57116372 A JPS57116372 A JP S57116372A
Authority
JP
Japan
Prior art keywords
toner
blade
sleeve
thin film
internally
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.)
Pending
Application number
JP271481A
Other languages
Japanese (ja)
Inventor
Kazuo Isaka
Kimio Nakahata
Masaaki Sakurai
Takeshi Watanabe
Fumitaka Kan
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
Application filed by Canon Inc filed Critical Canon Inc
Priority to JP271481A priority Critical patent/JPS57116372A/en
Publication of JPS57116372A publication Critical patent/JPS57116372A/en
Pending 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
    • G03G15/09—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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Magnetic Brush Developing In Electrophotography (AREA)

Abstract

PURPOSE:To form a thin film of a single-component magnetic developer uniformly all the time, by specifying the unevenness of the surface of a developer supporting member equipped with magnets internally. CONSTITUTION:A blade 1a is provided in oppsoition to a developer supporting member (sleeve) 2 equipped fixed magnets 4 internally, thereby regulating the thickness of a single-component toner layer 3. The surface of this sleeve 2 is reoughened by bead blast treatment, which uses spherical grains, to 2-10mum unevenness pitch P while recessed parts are specified to 0.3-15mum depth (d) and 2d-5d dimension. Consequently, the staying of toner on the up side of the blade 1a is eliminated and the swelling of the toner to the down side of the blade 1a never occures. Therefore, a thin film of the toner is formed on the sleeve 2 uniformly all the time.
JP271481A 1981-01-13 1981-01-13 Developing device Pending JPS57116372A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP271481A JPS57116372A (en) 1981-01-13 1981-01-13 Developing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP271481A JPS57116372A (en) 1981-01-13 1981-01-13 Developing device

Publications (1)

Publication Number Publication Date
JPS57116372A true JPS57116372A (en) 1982-07-20

Family

ID=11536967

Family Applications (1)

Application Number Title Priority Date Filing Date
JP271481A Pending JPS57116372A (en) 1981-01-13 1981-01-13 Developing device

Country Status (1)

Country Link
JP (1) JPS57116372A (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6190176A (en) * 1984-10-09 1986-05-08 Konishiroku Photo Ind Co Ltd Developing device
JPH01217483A (en) * 1988-02-26 1989-08-31 Canon Inc Image forming device
EP0407125A2 (en) * 1989-07-03 1991-01-09 Canon Kabushiki Kaisha Developing apparatus and method of preparing a developer carrying member
US5128722A (en) * 1988-04-08 1992-07-07 Minolta Camera Kabushiki Kaisha Developing device excellent in toner transportability
US5227849A (en) * 1989-07-03 1993-07-13 Canon Kabushiki Kaisha Developing apparatus and developer carrying member usable therewith
US5412456A (en) * 1992-09-09 1995-05-02 Kabushiki Kaisha Toshiba Developing apparatus
US5608502A (en) * 1992-06-17 1997-03-04 Hitachi Metals, Ltd. Method for treating magnet roll by blasting with nonmagnetic spherical particles
US6178306B1 (en) 1997-11-10 2001-01-23 Canon Kabushiki Kaisha Developer bearing body electroless plated on blasted surface using spherical particles, production method therefor and developing apparatus using the same
US6873816B2 (en) 2001-08-20 2005-03-29 Canon Kabushiki Kaisha Developing assembly, process cartridge and image-forming method
US6941100B2 (en) * 2002-03-07 2005-09-06 Seiko Epson Corporation Developer bearing member, method for producing developer bearing member, developing device, image-forming apparatus, and computer system

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6190176A (en) * 1984-10-09 1986-05-08 Konishiroku Photo Ind Co Ltd Developing device
JPH01217483A (en) * 1988-02-26 1989-08-31 Canon Inc Image forming device
US5128722A (en) * 1988-04-08 1992-07-07 Minolta Camera Kabushiki Kaisha Developing device excellent in toner transportability
EP0407125A2 (en) * 1989-07-03 1991-01-09 Canon Kabushiki Kaisha Developing apparatus and method of preparing a developer carrying member
US5227849A (en) * 1989-07-03 1993-07-13 Canon Kabushiki Kaisha Developing apparatus and developer carrying member usable therewith
US5608502A (en) * 1992-06-17 1997-03-04 Hitachi Metals, Ltd. Method for treating magnet roll by blasting with nonmagnetic spherical particles
US5412456A (en) * 1992-09-09 1995-05-02 Kabushiki Kaisha Toshiba Developing apparatus
US5475477A (en) * 1992-09-09 1995-12-12 Kabushiki Kaisha Toshiba Developing apparatus
US6178306B1 (en) 1997-11-10 2001-01-23 Canon Kabushiki Kaisha Developer bearing body electroless plated on blasted surface using spherical particles, production method therefor and developing apparatus using the same
US6873816B2 (en) 2001-08-20 2005-03-29 Canon Kabushiki Kaisha Developing assembly, process cartridge and image-forming method
US6941100B2 (en) * 2002-03-07 2005-09-06 Seiko Epson Corporation Developer bearing member, method for producing developer bearing member, developing device, image-forming apparatus, and computer system

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