JPS5766455A - Development device - Google Patents

Development device

Info

Publication number
JPS5766455A
JPS5766455A JP14220480A JP14220480A JPS5766455A JP S5766455 A JPS5766455 A JP S5766455A JP 14220480 A JP14220480 A JP 14220480A JP 14220480 A JP14220480 A JP 14220480A JP S5766455 A JPS5766455 A JP S5766455A
Authority
JP
Japan
Prior art keywords
sleeve
toner
magnetic toner
roughened
blade
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.)
Granted
Application number
JP14220480A
Other languages
Japanese (ja)
Other versions
JPH0132506B2 (en
Inventor
Kazuo Isaka
Kimio Nakahata
Masaaki Sakurai
Takeshi Watanabe
Fumitaka Kan
Kenji Takeda
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 JP14220480A priority Critical patent/JPS5766455A/en
Priority to US06/309,383 priority patent/US4380966A/en
Priority to GB8130766A priority patent/GB2088252B/en
Priority to DE19813140478 priority patent/DE3140478C2/en
Publication of JPS5766455A publication Critical patent/JPS5766455A/en
Publication of JPH0132506B2 publication Critical patent/JPH0132506B2/ja
Granted 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

Abstract

PURPOSE:To apply magnetic toner in an invariably stable, uniform and unevennessfree thin layer by making a development sleeve surface specifically uneven by a sand blast treatment. CONSTITUTION:In a development device which uses single-component magnetic toner, a nonmagnetic sleeve 2 has a stainless steel surface roughened to 2-50mum unevenness pitch (p) and 0.1-8mum surface roughness (d) by a sand blast treatment by using irregular abrasive grains (#320-800). Magnetic toner 10 is applied uniformly over the sleeve 2 from a hopper part 7a by a thickness restraining member 1a. When the sleeve surface is not roughened, the toner aggregates magnetically into lumps at a toner staying part of the upper part of a magnetic blade 1a and they project from the blade to cause irregularity of application. For the application of an alternating voltage to the sleeve, the surface roughness is preferably 0.1-4mum.
JP14220480A 1980-10-11 1980-10-11 Development device Granted JPS5766455A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP14220480A JPS5766455A (en) 1980-10-11 1980-10-11 Development device
US06/309,383 US4380966A (en) 1980-10-11 1981-10-07 Development apparatus
GB8130766A GB2088252B (en) 1980-10-11 1981-10-12 Magnetic brush roller
DE19813140478 DE3140478C2 (en) 1980-10-11 1981-10-12 Developing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14220480A JPS5766455A (en) 1980-10-11 1980-10-11 Development device

Publications (2)

Publication Number Publication Date
JPS5766455A true JPS5766455A (en) 1982-04-22
JPH0132506B2 JPH0132506B2 (en) 1989-07-04

Family

ID=15309805

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14220480A Granted JPS5766455A (en) 1980-10-11 1980-10-11 Development device

Country Status (1)

Country Link
JP (1) JPS5766455A (en)

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6180279A (en) * 1984-09-28 1986-04-23 Toshiba Corp Developing device
JPH01217483A (en) * 1988-02-26 1989-08-31 Canon Inc Image forming device
US4866480A (en) * 1985-03-27 1989-09-12 Kabushiki Kaisha Toshiba Developing apparatus using one-component non-magnetic toner
JPH01297689A (en) * 1988-05-26 1989-11-30 Matsushita Electric Ind Co Ltd Developing device
JPH0313975A (en) * 1989-06-13 1991-01-22 Canon Inc Developing device
JPH03111855A (en) * 1989-09-27 1991-05-13 Canon Inc Method and device for forming image
JPH0427472U (en) * 1990-06-28 1992-03-04
US5137796A (en) * 1989-04-26 1992-08-11 Canon Kabushiki Kaisha Magnetic developer, comprising spherical particles magnetic
US5175070A (en) * 1989-09-27 1992-12-29 Canon Kabushiki Kaisha Image forming method and image forming apparatus
US5202731A (en) * 1989-09-27 1993-04-13 Canon Kabushiki Kaisha Image forming apparatus having an alternating bias electric field
EP0541113A1 (en) 1991-11-08 1993-05-12 Canon Kabushiki Kaisha Monocomponent-type developer for developing electrostatic image and image forming method
US5219695A (en) * 1989-11-22 1993-06-15 Canon Kabushiki Kaisha Image forming method
US5262267A (en) * 1989-04-26 1993-11-16 Canon Kabushiki Kaisha Magnetic developer, image forming method and image forming apparatus
US5310615A (en) * 1989-12-12 1994-05-10 Canon Kabushiki Kaisha Image forming method
US5675893A (en) * 1992-09-24 1997-10-14 Canon Kabushiki Kaisha Method for fastening an engaging member to a cylinder
US6020102A (en) * 1997-07-04 2000-02-01 Canon Kabushiki Kaisha Positive-chargeable toner, image forming method and apparatus unit
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
JP2007108669A (en) * 2005-09-16 2007-04-26 Ricoh Co Ltd Development device, process cartridge, and image forming apparatus

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5448718A (en) * 1977-09-26 1979-04-17 Dow Corning Manufacture of silylalkyl ester of phosphorus
JPS5516453A (en) * 1978-07-24 1980-02-05 Hitachi Ltd Tape for holding semiconductor device
JPS55118049A (en) * 1979-03-07 1980-09-10 Canon Inc Developing method

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5448718A (en) * 1977-09-26 1979-04-17 Dow Corning Manufacture of silylalkyl ester of phosphorus
JPS5516453A (en) * 1978-07-24 1980-02-05 Hitachi Ltd Tape for holding semiconductor device
JPS55118049A (en) * 1979-03-07 1980-09-10 Canon Inc Developing method

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6180279A (en) * 1984-09-28 1986-04-23 Toshiba Corp Developing device
US4866480A (en) * 1985-03-27 1989-09-12 Kabushiki Kaisha Toshiba Developing apparatus using one-component non-magnetic toner
JPH01217483A (en) * 1988-02-26 1989-08-31 Canon Inc Image forming device
JPH01297689A (en) * 1988-05-26 1989-11-30 Matsushita Electric Ind Co Ltd Developing device
US5137796A (en) * 1989-04-26 1992-08-11 Canon Kabushiki Kaisha Magnetic developer, comprising spherical particles magnetic
US5262267A (en) * 1989-04-26 1993-11-16 Canon Kabushiki Kaisha Magnetic developer, image forming method and image forming apparatus
JPH0313975A (en) * 1989-06-13 1991-01-22 Canon Inc Developing device
US5202731A (en) * 1989-09-27 1993-04-13 Canon Kabushiki Kaisha Image forming apparatus having an alternating bias electric field
US5175070A (en) * 1989-09-27 1992-12-29 Canon Kabushiki Kaisha Image forming method and image forming apparatus
JPH03111855A (en) * 1989-09-27 1991-05-13 Canon Inc Method and device for forming image
US5219695A (en) * 1989-11-22 1993-06-15 Canon Kabushiki Kaisha Image forming method
US5298950A (en) * 1989-11-22 1994-03-29 Canon Kabushiki Kaisha Image forming apparatus
US5310615A (en) * 1989-12-12 1994-05-10 Canon Kabushiki Kaisha Image forming method
JPH0427472U (en) * 1990-06-28 1992-03-04
EP0541113A1 (en) 1991-11-08 1993-05-12 Canon Kabushiki Kaisha Monocomponent-type developer for developing electrostatic image and image forming method
US5348829A (en) * 1991-11-08 1994-09-20 Canon Kabushiki Kaisha Monocomponent-type developer for developing electrostatic image and image forming method
US5675893A (en) * 1992-09-24 1997-10-14 Canon Kabushiki Kaisha Method for fastening an engaging member to a cylinder
US5907750A (en) * 1992-09-24 1999-05-25 Canon Kabushiki Kaisha Cylindrical structure, process cartridge, and image forming apparatus
US6020102A (en) * 1997-07-04 2000-02-01 Canon Kabushiki Kaisha Positive-chargeable toner, image forming method and apparatus unit
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
JP2007108669A (en) * 2005-09-16 2007-04-26 Ricoh Co Ltd Development device, process cartridge, and image forming apparatus

Also Published As

Publication number Publication date
JPH0132506B2 (en) 1989-07-04

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