GB1342911A - Developing electrostatic latent images - Google Patents

Developing electrostatic latent images

Info

Publication number
GB1342911A
GB1342911A GB2056471A GB2056471A GB1342911A GB 1342911 A GB1342911 A GB 1342911A GB 2056471 A GB2056471 A GB 2056471A GB 2056471 A GB2056471 A GB 2056471A GB 1342911 A GB1342911 A GB 1342911A
Authority
GB
United Kingdom
Prior art keywords
brush
brushes
electrostatic latent
fibres
backing
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
GB2056471A
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.)
Eastman Kodak Co
Original Assignee
Eastman Kodak Co
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 Eastman Kodak Co filed Critical Eastman Kodak Co
Publication of GB1342911A publication Critical patent/GB1342911A/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)

Abstract

1342911 Developing apparatus EASTMAN KODAK CO 19 April 1971 [6 Feb 1970] 20564/71 Heading G2H Electrographic developing apparatus comprises two brushes 23, 24 each comprising metal coated fibres; the conductivity of brush 23 being higher than that of brush 24 whereby brush 23 produces solid area development and brush 24 produces fringe development. One or both of the brushes may be used on an electrostatic latent image. As shown, an image bearing web 20 is moved into contact with the desired brush by rollers 28, 30. A bristle brush 25 feeds developer to brushes 23, 24. Brushes 23, 24 may be earthed or electrically biased and may be elctrically connected to the backing of web 20. The brushes may be cylindrical, or flat or in the form of a belt or coil. Natural and synthetic fibres are listed as are metals for coating them and methods of coating. Nickel coated acrylic fibres are preferred. The backing (13,) Fig. 1; (not shown) of each brush may be provided with a conductive support (14).
GB2056471A 1970-02-06 1971-04-19 Developing electrostatic latent images Expired GB1342911A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US922570A 1970-02-06 1970-02-06

Publications (1)

Publication Number Publication Date
GB1342911A true GB1342911A (en) 1974-01-10

Family

ID=21736350

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2056471A Expired GB1342911A (en) 1970-02-06 1971-04-19 Developing electrostatic latent images

Country Status (6)

Country Link
US (1) US3664857A (en)
AU (1) AU2512171A (en)
BE (1) BE762379A (en)
CA (1) CA934233A (en)
FR (1) FR2080483A5 (en)
GB (1) GB1342911A (en)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3884185A (en) * 1973-09-06 1975-05-20 Xerox Corp Coated wire developer brush
US4096826A (en) * 1976-05-21 1978-06-27 Xerox Corporation Magnetic brush development system for flexible photoreceptors
MX150104A (en) * 1979-03-26 1984-03-15 Xerox Corp IMPROVEMENTS IN A DEVELOPMENT SYSTEM
US4240740A (en) * 1979-06-11 1980-12-23 Xerox Corporation Development system
US4292921A (en) * 1979-04-04 1981-10-06 Eastman Kodak Company Electrographic development apparatus
US4267797A (en) * 1979-04-27 1981-05-19 Xerox Corporation Development system
DE2923260C3 (en) * 1979-06-08 1982-01-14 Dr.-Ing. Rudolf Hell Gmbh, 2300 Kiel Heat developer for dry silver photo paper
US4239017A (en) * 1979-07-16 1980-12-16 Xerox Corporation Development system
US4297972A (en) * 1979-11-05 1981-11-03 Xerox Corporation Development system
US4408862A (en) * 1980-01-18 1983-10-11 Tokyo Shibaura Denki Kabushiki Kaisha Developing apparatus for electrostatic copying machine
US4324490A (en) * 1980-04-28 1982-04-13 Xerox Corporation Development system
US4336565A (en) * 1980-08-04 1982-06-22 Xerox Corporation Charge process with a carbon fiber brush electrode
US4575217A (en) * 1984-12-04 1986-03-11 Eastman Kodak Company Apparatus for selectively sealing a discrete dielectric sheet developer station
JPH0422734U (en) * 1990-06-15 1992-02-25

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3251706A (en) * 1954-01-04 1966-05-17 Xerox Corp Xerographic development method and apparatus
US3097962A (en) * 1954-08-17 1963-07-16 Union Carbide Corp Gas plating metal on fibers for antistatic purposes
US2902974A (en) * 1956-06-14 1959-09-08 Ibm Latent electrostatic image developing apparatus
US2927554A (en) * 1957-09-23 1960-03-08 Ibm Cascade developing apparatus
GB1133462A (en) * 1964-12-28 1968-11-13 Rank Xerox Ltd Electrostatic image development
US3375806A (en) * 1965-05-06 1968-04-02 Xerox Corp Xerographic donor development apparatus
US3420151A (en) * 1965-11-16 1969-01-07 Fairchild Camera Instr Co Apparatus for electrophotographic printing
US3492151A (en) * 1966-04-06 1970-01-27 Du Pont Metallizing process
US3357402A (en) * 1966-12-27 1967-12-12 Xerox Corp Rotary brush development

Also Published As

Publication number Publication date
CA934233A (en) 1973-09-25
FR2080483A5 (en) 1971-11-12
AU2512171A (en) 1972-08-10
BE762379A (en) 1971-07-16
US3664857A (en) 1972-05-23

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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