GB1479787A - Xerographic reproduction apparatus - Google Patents

Xerographic reproduction apparatus

Info

Publication number
GB1479787A
GB1479787A GB2646/75A GB264675A GB1479787A GB 1479787 A GB1479787 A GB 1479787A GB 2646/75 A GB2646/75 A GB 2646/75A GB 264675 A GB264675 A GB 264675A GB 1479787 A GB1479787 A GB 1479787A
Authority
GB
United Kingdom
Prior art keywords
jan
developer
background areas
reproduction apparatus
charge
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
GB2646/75A
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.)
Xerox Corp
Original Assignee
Xerox Corp
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 Xerox Corp filed Critical Xerox Corp
Publication of GB1479787A publication Critical patent/GB1479787A/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

1479787 Developing electrographic images XEROX CORP 21 Jan 1975 [28 Jan 1974] 2646/75 Heading G2H To obviate the short-circuiting effect of conductive carrier particles in a developer, e.g. in a magnetic brush developing apparatus, while suppressing the development of image background areas on a latent charge image bearing photoconductive member, the member is subjected to a corona discharge of opposite sign to reverse the charge on the background areas and the developer applicator is connected to a potential, e.g. earth, common to the backing of the photo-conductive member.
GB2646/75A 1974-01-28 1975-01-21 Xerographic reproduction apparatus Expired GB1479787A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US437122A US3901189A (en) 1974-01-28 1974-01-28 Magnetic brush developing apparatus

Publications (1)

Publication Number Publication Date
GB1479787A true GB1479787A (en) 1977-07-13

Family

ID=23735166

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2646/75A Expired GB1479787A (en) 1974-01-28 1975-01-21 Xerographic reproduction apparatus

Country Status (4)

Country Link
US (1) US3901189A (en)
CA (1) CA1052559A (en)
GB (1) GB1479787A (en)
NL (1) NL7500939A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4038544A (en) * 1976-05-03 1977-07-26 Xerox Corporation Apparatus and method for developing an electrostatic latent image
US4265998A (en) * 1979-11-13 1981-05-05 International Business Machines Corporation Electrophotographic photoreceptive background areas cleaned by backcharge process

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3589895A (en) * 1967-07-17 1971-06-29 Eastman Kodak Co Electrographic developing method suited for transfer electrophotography without cleaning
US3598579A (en) * 1967-09-06 1971-08-10 Eastman Kodak Co Method of transferring electrostatic images to a dielectric sheet wherein a reversal of potential is used to clear background areas
US3599605A (en) * 1969-03-20 1971-08-17 Ibm Self-biasing development electrode for electrophotography
US3805739A (en) * 1971-06-11 1974-04-23 Xerox Corp Controlling multiple voltage levels for electrostatic printing

Also Published As

Publication number Publication date
CA1052559A (en) 1979-04-17
NL7500939A (en) 1975-04-29
US3901189A (en) 1975-08-26

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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