GB1248945A - Electrophotography - Google Patents

Electrophotography

Info

Publication number
GB1248945A
GB1248945A GB6036268A GB6036268A GB1248945A GB 1248945 A GB1248945 A GB 1248945A GB 6036268 A GB6036268 A GB 6036268A GB 6036268 A GB6036268 A GB 6036268A GB 1248945 A GB1248945 A GB 1248945A
Authority
GB
United Kingdom
Prior art keywords
sheet
frame
dec
discharged
periphery
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
GB6036268A
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 GB1248945A publication Critical patent/GB1248945A/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
    • G03G15/045—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 with means for charging or discharging distinct portions of the charge pattern on the recording material, e.g. for contrast enhancement or discharging non-image areas
    • G03G15/047—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 with means for charging or discharging distinct portions of the charge pattern on the recording material, e.g. for contrast enhancement or discharging non-image areas for discharging non-image areas
    • 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
    • G03G13/22—Processes involving a combination of more than one step according to groups G03G13/02 - G03G13/20

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Photographic Developing Apparatuses (AREA)
  • Electrophotography Using Other Than Carlson'S Method (AREA)
  • Photoreceptors In Electrophotography (AREA)

Abstract

1,248,945. Electro-photographic processes. RANK XEROX Ltd. Dec. 19, 1968 [Dec. 26, 1967], No.60362/68. Heading G2H. The surface of a charged electro-photographic plate is discharged in the area outside the periphery of a latent image being produced there on, so that this area does not attract toner particles during development. A frame 5 has a conductive portion 7 closely contacting a photoconductively coated sheet 4 which has been uniformly electrostatically charged before exposure. Discharge may be accelerated by connecting a source of potential 10 to the frame 5. In another embodiment in which the sheet (4) Fig. 2 (not shown) is exposed in contact with the original (1) the area outside the periphery of the image is discharged by a thin frame (5) of conductive rubber or of cloth coated with carbon. The original and sheet (4) are pressed together between a presser 8 and plate 9.
GB6036268A 1967-12-26 1968-12-19 Electrophotography Expired GB1248945A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8352967 1967-12-26

Publications (1)

Publication Number Publication Date
GB1248945A true GB1248945A (en) 1971-10-06

Family

ID=13805002

Family Applications (1)

Application Number Title Priority Date Filing Date
GB6036268A Expired GB1248945A (en) 1967-12-26 1968-12-19 Electrophotography

Country Status (2)

Country Link
DE (1) DE1817224A1 (en)
GB (1) GB1248945A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE793559A (en) * 1971-12-30 1973-06-29 Xerox Corp ELECTROSTATOGRAPHIC MACHINE INCLUDING AN EXPOSURE PRE-DEVELOPMENT DEVICE
GB1416062A (en) * 1973-03-30 1975-12-03 Xerox Corp Electrostatography
DE3336311A1 (en) * 1983-10-06 1985-04-18 E.G.O. Elektro-Geräte Blanc u. Fischer, 7519 Oberderdingen ELECTRIC COOKING PLATE

Also Published As

Publication number Publication date
DE1817224A1 (en) 1969-07-17

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