GB1538882A - Electrophotographic copying apparatus - Google Patents

Electrophotographic copying apparatus

Info

Publication number
GB1538882A
GB1538882A GB4510776A GB4510776A GB1538882A GB 1538882 A GB1538882 A GB 1538882A GB 4510776 A GB4510776 A GB 4510776A GB 4510776 A GB4510776 A GB 4510776A GB 1538882 A GB1538882 A GB 1538882A
Authority
GB
United Kingdom
Prior art keywords
copying apparatus
electrophotographic copying
electrophotographic
copying
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
GB4510776A
Other languages
English (en)
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.)
Canon Production Printing Holding BV
Original Assignee
Oce Van der Grinten NV
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 Oce Van der Grinten NV filed Critical Oce Van der Grinten NV
Publication of GB1538882A publication Critical patent/GB1538882A/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
    • G03G2215/00—Apparatus for electrophotographic processes
    • G03G2215/04—Arrangements for exposing and producing an image
    • G03G2215/0429—Changing or enhancing the image
    • G03G2215/0431—Producing a clean non-image area, i.e. avoiding show-around effects
    • G03G2215/0434—Parameters defining the non-image area to be cleaned
    • G03G2215/0436—Document properties at the scanning position, e.g. position and density
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2215/00—Apparatus for electrophotographic processes
    • G03G2215/04—Arrangements for exposing and producing an image
    • G03G2215/0429—Changing or enhancing the image
    • G03G2215/0431—Producing a clean non-image area, i.e. avoiding show-around effects
    • G03G2215/0448—Charge-erasing means for the non-image area
    • G03G2215/0463—Exposure lamp used for scanning

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Exposure Or Original Feeding In Electrophotography (AREA)
  • Projection-Type Copiers In General (AREA)
GB4510776A 1975-11-04 1976-10-29 Electrophotographic copying apparatus Expired GB1538882A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7512887A NL7512887A (nl) 1975-11-04 1975-11-04 Elektrofotografisch kopieerapparaat.

Publications (1)

Publication Number Publication Date
GB1538882A true GB1538882A (en) 1979-01-24

Family

ID=19824784

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4510776A Expired GB1538882A (en) 1975-11-04 1976-10-29 Electrophotographic copying apparatus

Country Status (5)

Country Link
JP (1) JPS5257833A (fr)
DE (1) DE2647628A1 (fr)
FR (1) FR2331072A1 (fr)
GB (1) GB1538882A (fr)
NL (1) NL7512887A (fr)

Also Published As

Publication number Publication date
FR2331072B3 (fr) 1978-12-15
JPS5257833A (en) 1977-05-12
DE2647628A1 (de) 1977-05-05
NL7512887A (nl) 1977-05-06
FR2331072A1 (fr) 1977-06-03

Similar Documents

Publication Publication Date Title
GB1490770A (en) Electrophotographic copying apparatus
JPS5266434A (en) Document copying apparatus
JPS5251950A (en) Developing apparatus for electrostatographic printing apparatus
HK17883A (en) Electrostatic copying apparatus
GB1543973A (en) Electrophotographic fixing apparatus
GB1544523A (en) Electrographic apparatus
GB1557298A (en) Copying apparatus
GB1554416A (en) Electrophotographic developing apparatus
JPS5254449A (en) Electrophotographic apparatus
JPS5294143A (en) Copying apparatus
GB1538886A (en) Electrographic copying apparatus
AU1272976A (en) Xerographic photoreceptor
JPS52152233A (en) Electrostatic copying apparatus
JPS5288346A (en) Copying apparatus
GB1543100A (en) Electrostatic copying apparatus
AU504083B2 (en) Electrophotographic apparatus
JPS52100242A (en) Copying apparatus
GB1546171A (en) Electrostatic copying apparatus
JPS5296031A (en) Copying apparatus
JPS5526597A (en) Image copying method
GB1557826A (en) Copying apparatus
GB2010742B (en) Electrophotographic copying apparatus
JPS5277732A (en) Toner for electrophotographic development
GB1538308A (en) Electrostatic copying apparatus
GB1554776A (en) Electrstatc copying apparatus

Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee