GB1186599A - Xerographic Charging System - Google Patents

Xerographic Charging System

Info

Publication number
GB1186599A
GB1186599A GB30209/67A GB3020967A GB1186599A GB 1186599 A GB1186599 A GB 1186599A GB 30209/67 A GB30209/67 A GB 30209/67A GB 3020967 A GB3020967 A GB 3020967A GB 1186599 A GB1186599 A GB 1186599A
Authority
GB
United Kingdom
Prior art keywords
potential
plate
grid
areas
polarity
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
GB30209/67A
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 Ltd
Original Assignee
Rank Xerox 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 Rank Xerox Ltd filed Critical Rank Xerox Ltd
Publication of GB1186599A publication Critical patent/GB1186599A/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
    • G03G15/04—Apparatus for electrographic processes using a charge pattern for exposing, i.e. imagewise exposure by optically projecting the original image on a photoconductive recording material
    • G03G15/04027—Apparatus for electrographic processes using a charge pattern for exposing, i.e. imagewise exposure by optically projecting the original image on a photoconductive recording material and forming half-tone image
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G13/00—Electrographic processes using a charge pattern
    • G03G13/02—Sensitising, i.e. laying-down a uniform charge
    • 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
    • G03G15/02—Apparatus for electrographic processes using a charge pattern for laying down a uniform charge, e.g. for sensitising; Corona discharge devices
    • G03G15/0291—Apparatus for electrographic processes using a charge pattern for laying down a uniform charge, e.g. for sensitising; Corona discharge devices corona discharge devices, e.g. wires, pointed electrodes, means for cleaning the corona discharge device
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S430/00—Radiation imagery chemistry: process, composition, or product thereof
    • Y10S430/001—Electric or magnetic imagery, e.g., xerography, electrography, magnetography, etc. Process, composition, or product
    • Y10S430/102—Electrically charging radiation-conductive surface

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Electrostatic Charge, Transfer And Separation In Electrography (AREA)
  • Printers Or Recording Devices Using Electromagnetic And Radiation Means (AREA)

Abstract

1,186,599. Xerographic charging. RANK XEROX Ltd. June 30, 1967 [July 1, 1966], No.30209/67. Heading G2H. A multiplicity of discrete alternate first and second areas of charge at two different potentials are formed on a xerographic plate by charging at least the first areas to a first potential, and depositing charge producing particles in the second areas. The plate may be first uniformly charged to the first potential (e. g. by corona discharge friction or a roller) and then to a pattern of the second potential by either (a) applying a corona discharge of opposite polarity to the first potential through a grid which may be earthed or at a potential which only allows charged particles to pass through its apertures, of (b) placing adjacent the plate a grid maintained at a high potential having a polarity opposite to that of the first potential. Alternatively, the uncharged plate may be subjected to negative and positive corona discharges through a grid having the wires in one direction at one polarity and the wires in the perpendicular direction at the opposite polarity. The charged plate may be imagewise exposed to form a latent image which is developed and cleaned for reuse after transfer of the developed image. The grid may be in the form of a roller or endless belt and provided with shields in a line by line copier. The charge pattern enables large areas to be fully developed.
GB30209/67A 1966-07-01 1967-06-30 Xerographic Charging System Expired GB1186599A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US56223766A 1966-07-01 1966-07-01

Publications (1)

Publication Number Publication Date
GB1186599A true GB1186599A (en) 1970-04-02

Family

ID=24245405

Family Applications (1)

Application Number Title Priority Date Filing Date
GB30209/67A Expired GB1186599A (en) 1966-07-01 1967-06-30 Xerographic Charging System

Country Status (4)

Country Link
US (1) US3543022A (en)
JP (1) JPS5420343B1 (en)
DE (1) DE1572377B2 (en)
GB (1) GB1186599A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2404249A1 (en) * 1977-09-23 1979-04-20 Siemens Ag DEVICE FOR REPRESENTING AND REPRODUCING IMAGES OF ELECTRIC LOADS
GB2152706A (en) * 1983-12-13 1985-08-07 Casio Computer Co Ltd Two-color electrophotographic apparatus and process

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2165100A5 (en) * 1969-10-06 1973-08-03 Electroprint Inc
JPS5396836A (en) * 1977-02-04 1978-08-24 Olympus Optical Co Ltd Rormation of many trasfrred copies from one latent image
JPS53113542A (en) * 1977-03-15 1978-10-04 Canon Inc Formation method of image
US4124287A (en) * 1977-03-31 1978-11-07 Xerox Corporation Imaging system utilizing uncharged marking particles
JPS53123135A (en) * 1977-03-31 1978-10-27 Xerox Corp Method of marking insulating surface and device for forming visible image on insulating surface
MX147918A (en) * 1977-03-31 1983-02-02 Xerox Corp IMPROVEMENTS IN APPARATUS AND METHOD TO PRODUCE A VISIBLE IMAGE ON A PHOTO CONDUCTIVE IMAGE FORMING SURFACE
DE2849222A1 (en) * 1978-11-13 1980-05-22 Hoechst Ag METHOD FOR ELECTROSTATICALLY CHARGING A DIELECTRIC LAYER AND DEVICE FOR CARRYING OUT THE METHOD
JP2010531043A (en) * 2007-06-22 2010-09-16 スリーエム イノベイティブ プロパティズ カンパニー Apparatus and method for correcting charge on moving web

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2965754A (en) * 1958-03-26 1960-12-20 Haloid Xerox Inc Double screen corona device
US3146385A (en) * 1960-12-09 1964-08-25 Xerox Corp Xerographic plate charging method and apparatus
US3412242A (en) * 1965-12-10 1968-11-19 Rca Corp Method of charging a zinc oxide photoconductive layer with a positive charge

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2404249A1 (en) * 1977-09-23 1979-04-20 Siemens Ag DEVICE FOR REPRESENTING AND REPRODUCING IMAGES OF ELECTRIC LOADS
GB2152706A (en) * 1983-12-13 1985-08-07 Casio Computer Co Ltd Two-color electrophotographic apparatus and process

Also Published As

Publication number Publication date
US3543022A (en) 1970-11-24
JPS5420343B1 (en) 1979-07-21
DE1572377B2 (en) 1976-04-29
DE1572377A1 (en) 1970-02-12

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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