GB797027A - Improvements in electrostatic printing - Google Patents

Improvements in electrostatic printing

Info

Publication number
GB797027A
GB797027A GB5186/56A GB518656A GB797027A GB 797027 A GB797027 A GB 797027A GB 5186/56 A GB5186/56 A GB 5186/56A GB 518656 A GB518656 A GB 518656A GB 797027 A GB797027 A GB 797027A
Authority
GB
United Kingdom
Prior art keywords
layer
supported
cylinder
transparent
developer
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
GB5186/56A
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.)
General Dynamics Corp
Original Assignee
General Dynamics 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 General Dynamics Corp filed Critical General Dynamics Corp
Publication of GB797027A publication Critical patent/GB797027A/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
    • G03G15/22—Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups G03G13/02 - G03G13/20
    • G03G15/34—Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups G03G13/02 - G03G13/20 in which the powder image is formed directly on the recording material, e.g. by using a liquid toner
    • 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
    • G03G15/10—Apparatus for electrographic processes using a charge pattern for developing using a liquid developer
    • 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
    • G03G15/22—Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups G03G13/02 - G03G13/20
    • G03G15/24—Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups G03G13/02 - G03G13/20 whereby at least two steps are performed simultaneously

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Liquid Developers In Electrophotography (AREA)

Abstract

797,027. Electrophotography. GENERAL DYNAMICS CORPORATION. Feb. 20, 1956 [March 7, 1955], No. 5186/56. Class 98(2) [Also in Group XXXV] An electrostatic image is formed and developed simultaneously on a photoconductive layer 16 supported on a translucent conductive layer 14, by contacting successive portions of the photoconductor with a cylinder comprising a semiconductive coating 24 on a conductive core 22, which cylinder is supported so that it is insulated from earth to rotate in a liquid developer composition 28 comprising an electrostatic attractable powder suspended in an insulating liquid, while the layer 16 is exposed to a light image through the transparent layer 14 and while a potential is applied between the conductive layer 14 and the conductive core 22, the container 26 for the developer composition being earthed. The layers 14 and 16 may be supported on a transparent cylinder 12 as shown in Fig. 1, and exposed by a lamp 46 through a negative 18, or they may be supported on a flat transparent plate which is moved across the semiconductor cylinder by means of rollers. The developer compotions may comprise carbon suspended in kerosene, hydrocarbons or chlorinated hydrocarbons. The conductive layer 14 may be formed by evaporating gold with bismuth or tin oxide on to the transparent support 12. Semiconductive layer 24 may be of "conducting" rubber. The developer image may be transferred to a sheet 42 and the surface 16 cleaned at 44. Specifications 755,486 and 796,024 are referred to.
GB5186/56A 1955-03-07 1956-02-20 Improvements in electrostatic printing Expired GB797027A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US797027XA 1955-03-07 1955-03-07

Publications (1)

Publication Number Publication Date
GB797027A true GB797027A (en) 1958-06-25

Family

ID=22152240

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5186/56A Expired GB797027A (en) 1955-03-07 1956-02-20 Improvements in electrostatic printing

Country Status (1)

Country Link
GB (1) GB797027A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3941593A (en) * 1971-09-12 1976-03-02 William Alan Stewart Butement Electro-photographic method and element
US4168975A (en) * 1976-06-17 1979-09-25 Repco Limited Electrophotographic image receiving plates
EP1127625A2 (en) * 2000-02-25 2001-08-29 Samsung Electronics Co., Ltd. Sheet coating apparatus

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3941593A (en) * 1971-09-12 1976-03-02 William Alan Stewart Butement Electro-photographic method and element
US4168975A (en) * 1976-06-17 1979-09-25 Repco Limited Electrophotographic image receiving plates
EP1127625A2 (en) * 2000-02-25 2001-08-29 Samsung Electronics Co., Ltd. Sheet coating apparatus
EP1127625A3 (en) * 2000-02-25 2004-07-28 Samsung Electronics Co., Ltd. Sheet coating apparatus

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