JPS5232198Y2 - - Google Patents

Info

Publication number
JPS5232198Y2
JPS5232198Y2 JP1972148094U JP14809472U JPS5232198Y2 JP S5232198 Y2 JPS5232198 Y2 JP S5232198Y2 JP 1972148094 U JP1972148094 U JP 1972148094U JP 14809472 U JP14809472 U JP 14809472U JP S5232198 Y2 JPS5232198 Y2 JP S5232198Y2
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.)
Expired
Application number
JP1972148094U
Other languages
Japanese (ja)
Other versions
JPS49106349U (en]
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 (en])

Priority Applications (4)

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

Publications (2)

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

Family

ID=15445093

Family Applications (1)

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

Country Status (4)

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

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
US3892480A (en) 1975-07-01
DE2364324A1 (de) 1974-07-18
DE2364324B2 (de) 1976-11-18
JPS49106349U (en]) 1974-09-11
GB1446748A (en) 1976-08-18

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