JPS56133761A - Magnetic brush developing device - Google Patents

Magnetic brush developing device

Info

Publication number
JPS56133761A
JPS56133761A JP3859280A JP3859280A JPS56133761A JP S56133761 A JPS56133761 A JP S56133761A JP 3859280 A JP3859280 A JP 3859280A JP 3859280 A JP3859280 A JP 3859280A JP S56133761 A JPS56133761 A JP S56133761A
Authority
JP
Japan
Prior art keywords
magnetic
magnets
magnetic body
poles
developing device
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
JP3859280A
Other languages
Japanese (ja)
Other versions
JPS648821B2 (en
Inventor
Masao Masumura
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
Priority to JP3859280A priority Critical patent/JPS56133761A/en
Publication of JPS56133761A publication Critical patent/JPS56133761A/en
Publication of JPS648821B2 publication Critical patent/JPS648821B2/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 enable desired magnetic adjustment to be accomplished easily and obtain the adequate magnetism shielding effect by installing a magnetic body to one of mutually adjacent magnetic poles and adjusting the magnetic force of the magnetic poles. CONSTITUTION:A magnetic body 14 is disposed between the magnetic poles of magnets 9 and 10 and in the relation in which both ends of the magnetic body 14 overlap with the magnets 9, 10 respectively. The magnetic flux density on the outside of a sleeve 11 of the case in which the magnetic body 14 is not provided is a curve A, in which the part corresponding to the magnets 9, 10 is maximum but the magnetic flux density is fairly large between both magnets as well. When the magnetic body 14 is disposed, the magnetic density changes like a curve B. The magnetic force is adjusted and adequate magnetic shielding effect is obtained by disposing the magnetic body between the adjacent magnetic poles in this way.
JP3859280A 1980-03-25 1980-03-25 Magnetic brush developing device Granted JPS56133761A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3859280A JPS56133761A (en) 1980-03-25 1980-03-25 Magnetic brush developing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3859280A JPS56133761A (en) 1980-03-25 1980-03-25 Magnetic brush developing device

Publications (2)

Publication Number Publication Date
JPS56133761A true JPS56133761A (en) 1981-10-20
JPS648821B2 JPS648821B2 (en) 1989-02-15

Family

ID=12529560

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3859280A Granted JPS56133761A (en) 1980-03-25 1980-03-25 Magnetic brush developing device

Country Status (1)

Country Link
JP (1) JPS56133761A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59114574U (en) * 1983-01-21 1984-08-02 横河電機株式会社 developing device
US4829338A (en) * 1988-01-29 1989-05-09 Xerox Corporation Electrophotographic device with improved bead pickoff arrangement
US4960070A (en) * 1988-07-01 1990-10-02 Canon Kabushiki Kaisha Developing apparatus
JPH03216687A (en) * 1990-01-22 1991-09-24 Mita Ind Co Ltd Developing roller and its manufacture

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102540000B1 (en) 2020-10-30 2023-06-05 가부시키가이샤 카이지루시 하모노 카이하츠 센타 Shaver

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5329724A (en) * 1976-08-31 1978-03-20 Ricoh Co Ltd Magnetic force control in magnetic developing system
JPS5439137A (en) * 1977-09-02 1979-03-26 Hitachi Ltd Toner concentration detetor
JPS5479636A (en) * 1977-12-08 1979-06-25 Fuji Xerox Co Ltd Xerographic developing magnet

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5329724A (en) * 1976-08-31 1978-03-20 Ricoh Co Ltd Magnetic force control in magnetic developing system
JPS5439137A (en) * 1977-09-02 1979-03-26 Hitachi Ltd Toner concentration detetor
JPS5479636A (en) * 1977-12-08 1979-06-25 Fuji Xerox Co Ltd Xerographic developing magnet

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59114574U (en) * 1983-01-21 1984-08-02 横河電機株式会社 developing device
US4829338A (en) * 1988-01-29 1989-05-09 Xerox Corporation Electrophotographic device with improved bead pickoff arrangement
US4960070A (en) * 1988-07-01 1990-10-02 Canon Kabushiki Kaisha Developing apparatus
JPH03216687A (en) * 1990-01-22 1991-09-24 Mita Ind Co Ltd Developing roller and its manufacture

Also Published As

Publication number Publication date
JPS648821B2 (en) 1989-02-15

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