JPS49106349U - - Google Patents

Info

Publication number
JPS49106349U
JPS49106349U JP1972148094U JP14809472U JPS49106349U JP S49106349 U JPS49106349 U JP S49106349U JP 1972148094 U JP1972148094 U JP 1972148094U JP 14809472 U JP14809472 U JP 14809472U JP S49106349 U JPS49106349 U JP S49106349U
Authority
JP
Japan
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.)
Granted
Application number
JP1972148094U
Other versions
JPS5232198Y2 (ja
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 filed Critical
Priority to JP1972148094U priority Critical patent/JPS5232198Y2/ja
Priority to US417719A priority patent/US3892480A/en
Priority to GB5818173A priority patent/GB1446748A/en
Priority to DE19732364324 priority patent/DE2364324B2/de
Publication of JPS49106349U publication Critical patent/JPS49106349U/ja
Application granted granted Critical
Publication of JPS5232198Y2 publication Critical patent/JPS5232198Y2/ja
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
    • G03G2215/0434—Parameters defining the non-image area to be cleaned
    • G03G2215/0446—Magnification degree
    • 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)
  • Holders For Sensitive Materials And Originals (AREA)
  • Light Sources And Details Of Projection-Printing Devices (AREA)
  • Optical Systems Of Projection Type Copiers (AREA)
JP1972148094U 1972-12-27 1972-12-27 Expired JPS5232198Y2 (ja)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP1972148094U JPS5232198Y2 (ja) 1972-12-27 1972-12-27
US417719A US3892480A (en) 1972-12-27 1973-11-21 Exposure device for copying machine and the like
GB5818173A GB1446748A (en) 1972-12-27 1973-12-14 Electrophotographic copying apparatus
DE19732364324 DE2364324B2 (de) 1972-12-27 1973-12-22 Belichtungseinrichtung fuer ein elektrophotographisches kopiergeraet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1972148094U JPS5232198Y2 (ja) 1972-12-27 1972-12-27

Publications (2)

Publication Number Publication Date
JPS49106349U true JPS49106349U (ja) 1974-09-11
JPS5232198Y2 JPS5232198Y2 (ja) 1977-07-22

Family

ID=15445093

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1972148094U Expired JPS5232198Y2 (ja) 1972-12-27 1972-12-27

Country Status (4)

Country Link
US (1) US3892480A (ja)
JP (1) JPS5232198Y2 (ja)
DE (1) DE2364324B2 (ja)
GB (1) GB1446748A (ja)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4046467A (en) * 1975-05-14 1977-09-06 Xerox Corporation Zoom lens copier
DE2757850C3 (de) * 1977-12-23 1981-01-29 Agfa-Gevaert Ag, 5090 Leverkusen Transparente Auflageplatte für ein Original in einem optischen Kopiergerät
JPS5494038A (en) * 1978-01-07 1979-07-25 Ricoh Co Ltd Copier for zerography

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2927516A (en) * 1955-12-21 1960-03-08 Ibm Record card controlled electro-graphic printer
US3556655A (en) * 1968-01-22 1971-01-19 Addressograph Multigraph Photoelectrostatic copying machine
US3724940A (en) * 1970-12-07 1973-04-03 Ricoh Kk Electrophotographic copying apparatus with means for erasing marginal images

Also Published As

Publication number Publication date
GB1446748A (en) 1976-08-18
US3892480A (en) 1975-07-01
JPS5232198Y2 (ja) 1977-07-22
DE2364324A1 (de) 1974-07-18
DE2364324B2 (de) 1976-11-18

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