GB1227549A - - Google Patents

Info

Publication number
GB1227549A
GB1227549A GB1227549DA GB1227549A GB 1227549 A GB1227549 A GB 1227549A GB 1227549D A GB1227549D A GB 1227549DA GB 1227549 A GB1227549 A GB 1227549A
Authority
GB
United Kingdom
Prior art keywords
brush
particles
donor
toner particles
donor member
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 GB1227549A publication Critical patent/GB1227549A/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
    • G03G15/0805—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer on a brush

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Dry Development In Electrophotography (AREA)
  • Developing Agents For Electrophotography (AREA)

Abstract

1,227,549. Electro-photographic apparatus. RANK XEROX Ltd. Sept. 20, 1968 [Sept. 22, 1967], No.44818/68. Heading G2H. A development brush 47 has pile-like fibres 51 and is loaded with charged toner particles by rotation in mesh with the brush a hollow, apertured donor member 52 containing toner particles 56. The brush may be of natural fur, e. g. rabbit fur, or cloth such as velvet. The donor member has an inside layer 53 made of a rigid material such as brass, and an outer layer 54 made of any suitable material, e.g. silk, which occupies a position in the tribo-electric series different from that occupied by the toner particles. Mixing vanes 55 provided in the donor member serve to keep the donor particles in a loose consistency and are covered in a material such that the particles are charged by rubbing. The brush fibres penetrate the apertures of the donor member, and in addition to brushing the photo-sensitive drum surface with donor particles a cloud is also produced to assist in developing solid areas. A granular carrier such as glass or steel beads forms a developer mixture with the toner particles and assists in obtaining a uniform charge.
GB1227549D 1967-09-22 1968-09-20 Expired GB1227549A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US66983967A 1967-09-22 1967-09-22

Publications (1)

Publication Number Publication Date
GB1227549A true GB1227549A (en) 1971-04-07

Family

ID=24687946

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1227549D Expired GB1227549A (en) 1967-09-22 1968-09-20

Country Status (3)

Country Link
US (1) US3532071A (en)
DE (1) DE1797384A1 (en)
GB (1) GB1227549A (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3687106A (en) * 1969-07-11 1972-08-29 Xerox Corp Donor apparatus and method
US3848566A (en) * 1969-07-11 1974-11-19 Xerox Corp Donor apparatus
US3648658A (en) * 1969-09-15 1972-03-14 Xerox Corp Developing apparatus
US3790397A (en) * 1969-09-15 1974-02-05 Xerox Corp Retoning carrier beads in the development zone
US3636924A (en) * 1969-12-29 1972-01-25 Xerox Corp Fur brush developing apparatus
JPS5330329B2 (en) * 1972-09-25 1978-08-26
US3980047A (en) * 1974-11-15 1976-09-14 E. I. Du Pont De Nemours And Company Automatic toning device
US7123864B2 (en) * 2003-03-20 2006-10-17 Ricoh Company, Ltd. Developing device using electrostatic transport member

Also Published As

Publication number Publication date
US3532071A (en) 1970-10-06
DE1797384A1 (en) 1971-08-19

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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