JPS57104958A - Donor member in recording device - Google Patents

Donor member in recording device

Info

Publication number
JPS57104958A
JPS57104958A JP18260380A JP18260380A JPS57104958A JP S57104958 A JPS57104958 A JP S57104958A JP 18260380 A JP18260380 A JP 18260380A JP 18260380 A JP18260380 A JP 18260380A JP S57104958 A JPS57104958 A JP S57104958A
Authority
JP
Japan
Prior art keywords
magnetic
substrate
donor member
plenty
onto
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
JP18260380A
Other languages
Japanese (ja)
Inventor
Toshiyasu Kawabata
Teruyuki Onuma
Nobuo Mochizuki
Hajime Machida
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 JP18260380A priority Critical patent/JPS57104958A/en
Publication of JPS57104958A publication Critical patent/JPS57104958A/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

Landscapes

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

Abstract

PURPOSE:To form an uniform toner layer on a doner member without a blade by providing a ferrimagnetic material layer which has plenty of very small magnetic inversion zone inverted a direction of magnetic moment by means of emitting laser beam. CONSTITUTION:A thin layer of a ferrimagnetic alloy such as CdFe, CdCo, TbFe etc. is formed on a substrate 7 by means of high frequency sputtering method or metallizing etc. Then, by emitting laser beam onto the magnetic thin layers to endow outer magnetic field, plenty of very small magnetic inversion zones, of which the surfaces have matrix, striped and lattice like patterns, are formed. And donor member 5 are formed by winding the magnetic thin layers onto drum supporter 6 with the substrate. Also the donor member are formed directly by using the substrate as a supporter in itself. Then, toner are stuck uniformly onto the surface of donor member from the supporting member 9 by magnetic force and are absorbed and stuck electrostaticaly on to the latent image in the developing part.
JP18260380A 1980-12-23 1980-12-23 Donor member in recording device Pending JPS57104958A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18260380A JPS57104958A (en) 1980-12-23 1980-12-23 Donor member in recording device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18260380A JPS57104958A (en) 1980-12-23 1980-12-23 Donor member in recording device

Publications (1)

Publication Number Publication Date
JPS57104958A true JPS57104958A (en) 1982-06-30

Family

ID=16121167

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18260380A Pending JPS57104958A (en) 1980-12-23 1980-12-23 Donor member in recording device

Country Status (1)

Country Link
JP (1) JPS57104958A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6465583A (en) * 1987-09-04 1989-03-10 Sharp Kk Developing device for copying machine
US5149914A (en) * 1990-03-09 1992-09-22 Seiko Epson Corporation Development apparatus using a flexible magnetic field forming layer

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6465583A (en) * 1987-09-04 1989-03-10 Sharp Kk Developing device for copying machine
US5149914A (en) * 1990-03-09 1992-09-22 Seiko Epson Corporation Development apparatus using a flexible magnetic field forming layer

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