GB1238277A - - Google Patents

Info

Publication number
GB1238277A
GB1238277A GB1238277DA GB1238277A GB 1238277 A GB1238277 A GB 1238277A GB 1238277D A GB1238277D A GB 1238277DA GB 1238277 A GB1238277 A GB 1238277A
Authority
GB
United Kingdom
Prior art keywords
shield
magnetic
oct
developing apparatus
bristles
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.)
Expired
Application number
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 filed Critical
Publication of GB1238277A publication Critical patent/GB1238277A/en
Expired 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

Landscapes

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

Abstract

1,238,277. Electro-photographic developing apparatus. RANK XEROX Ltd. Oct.27, 1969 [Oct.28, 1968], No.52526/69. Heading G2H. A mangetic brush developing apparatus has magnets 36 supported on endless belts 34 passing over rollers 26, 28, and 30 within a shield 40 of non-magnetic material, the outside surface of the shield being slightly roughened within the development zone so as to prohibit sliding movement of magnetic developer bristles formed by the magnetic brush. Developer material entrained on the roughened surface of the shield 40 is caused to move in the opposite direction to belts 34 by a tumbling action caused by alternate erection and collapse of the bristles.
GB1238277D 1968-10-28 1969-10-27 Expired GB1238277A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US77121968A 1968-10-28 1968-10-28

Publications (1)

Publication Number Publication Date
GB1238277A true GB1238277A (en) 1971-07-07

Family

ID=25091102

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1238277D Expired GB1238277A (en) 1968-10-28 1969-10-27

Country Status (3)

Country Link
US (1) US3584601A (en)
DE (1) DE1953228A1 (en)
GB (1) GB1238277A (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1300865A (en) * 1969-03-15 1972-12-20 Ricoh Kk Improvements in and relating to electro-photographic developing arrangements and processes
US3724422A (en) * 1970-12-14 1973-04-03 Xerox Corp Magnetic brush developing apparatus
US3753420A (en) * 1971-08-11 1973-08-21 Olivetti & Co Spa Magnetic brush developer system
US3921578A (en) * 1972-07-03 1975-11-25 Itek Corp Power cascade electrophotographic development
US4067295A (en) * 1975-03-07 1978-01-10 Xerox Corporation Magnetic microfield donor system
US4156036A (en) * 1976-07-30 1979-05-22 Epp Corp. Structured donor sheet for high-resolution non-impact printer
JPS5368244A (en) * 1976-11-29 1978-06-17 Sharp Corp Developing device
JPS53132352A (en) * 1977-04-22 1978-11-18 Sharp Corp Electrophotographic copier
US4284031A (en) * 1978-08-04 1981-08-18 Sperry Corporation Magnetic transfer surface for controlling toner thickness
US4330193A (en) * 1979-10-01 1982-05-18 Xerox Corporation Development system
US4352552A (en) * 1980-06-25 1982-10-05 Xerox Corporation Multicolor development system for electrophotographic printing machines
US5826151A (en) * 1997-06-30 1998-10-20 Xerox Corporation Apparatus and method for non interactive agitated magnetic brush development
US5966576A (en) * 1997-07-28 1999-10-12 Eastman Kodak Company Extended development zone apparatus with rotating magnets

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3117891A (en) * 1960-09-26 1964-01-14 Xerox Corp Xerographic apparatus
DE1176440B (en) * 1962-04-26 1964-08-20 Max Baermann Belt drive with magnetic reinforcement of the frictional connection
US3145122A (en) * 1962-08-13 1964-08-18 Addressograph Multigraph Apparatus for applying developer powder to photo-conductive insulating material
US3455276A (en) * 1967-05-23 1969-07-15 Minnesota Mining & Mfg Magnetically responsive powder applicator
US3457900A (en) * 1968-02-29 1969-07-29 Eastman Kodak Co Single magnetic brush apparatus for development of electrostatic images

Also Published As

Publication number Publication date
US3584601A (en) 1971-06-15
DE1953228A1 (en) 1970-05-06

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee