JPS5772162A - Developing device using magnetic brush - Google Patents

Developing device using magnetic brush

Info

Publication number
JPS5772162A
JPS5772162A JP14849280A JP14849280A JPS5772162A JP S5772162 A JPS5772162 A JP S5772162A JP 14849280 A JP14849280 A JP 14849280A JP 14849280 A JP14849280 A JP 14849280A JP S5772162 A JPS5772162 A JP S5772162A
Authority
JP
Japan
Prior art keywords
magnetic
core
resin
developing device
layer
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
JP14849280A
Other languages
Japanese (ja)
Inventor
Kenji Aoki
Itaru Okonogi
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.)
Seiko Epson Corp
Suwa Seikosha KK
Original Assignee
Seiko Epson Corp
Suwa Seikosha KK
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 Seiko Epson Corp, Suwa Seikosha KK filed Critical Seiko Epson Corp
Priority to JP14849280A priority Critical patent/JPS5772162A/en
Publication of JPS5772162A publication Critical patent/JPS5772162A/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

Abstract

PURPOSE:To obtain easily and inexpensively a dry toner developing device having a lightweight and complex magnetic pole structure by forming the magnetic roll of the device with a columnar core and a resin bound magnetic layer of a magnetic of an intermetallic compound of rare earth metals. CONSTITUTION:The columnar core 6 of a magnetic roll is made of plastics or the like, and a resin-bound magnetic layer 7 of a magnet of an intermetallic compound of rare earth metals is wound around the core 6. The layer 7 is hardened before of after the winding, and it is magnetized thoroughly after the winding. Since the core 6 is made of plastics or the like, the weight is reduced, and the resin-bound magnetic layer 7 is formed into various shapes easily and inexpensively. Ferromagnetism several times as high as that of a ferrite magnet or the like is obtd. easily, so reduction in size and weight is attained easily.
JP14849280A 1980-10-23 1980-10-23 Developing device using magnetic brush Pending JPS5772162A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14849280A JPS5772162A (en) 1980-10-23 1980-10-23 Developing device using magnetic brush

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14849280A JPS5772162A (en) 1980-10-23 1980-10-23 Developing device using magnetic brush

Publications (1)

Publication Number Publication Date
JPS5772162A true JPS5772162A (en) 1982-05-06

Family

ID=15453958

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14849280A Pending JPS5772162A (en) 1980-10-23 1980-10-23 Developing device using magnetic brush

Country Status (1)

Country Link
JP (1) JPS5772162A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3415290A1 (en) * 1983-04-22 1984-10-25 Ricoh Co., Ltd., Tokio/Tokyo Developer carrier
JPS62278582A (en) * 1986-05-28 1987-12-03 Hitachi Ltd Developing device
US4743942A (en) * 1985-12-10 1988-05-10 Canon Kabushiki Kaisha Magnetic developer conveying device
US5359397A (en) * 1992-08-28 1994-10-25 Canon Kabushiki Kaisha Developing apparatus

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3415290A1 (en) * 1983-04-22 1984-10-25 Ricoh Co., Ltd., Tokio/Tokyo Developer carrier
US4743942A (en) * 1985-12-10 1988-05-10 Canon Kabushiki Kaisha Magnetic developer conveying device
JPS62278582A (en) * 1986-05-28 1987-12-03 Hitachi Ltd Developing device
US5359397A (en) * 1992-08-28 1994-10-25 Canon Kabushiki Kaisha Developing apparatus

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