FR2262339A1 - - Google Patents

Info

Publication number
FR2262339A1
FR2262339A1 FR7505550A FR7505550A FR2262339A1 FR 2262339 A1 FR2262339 A1 FR 2262339A1 FR 7505550 A FR7505550 A FR 7505550A FR 7505550 A FR7505550 A FR 7505550A FR 2262339 A1 FR2262339 A1 FR 2262339A1
Authority
FR
France
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
FR7505550A
Other languages
French (fr)
Other versions
FR2262339B1 (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.)
Xerox Corp
Original Assignee
Xerox 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 Xerox Corp filed Critical Xerox Corp
Publication of FR2262339A1 publication Critical patent/FR2262339A1/fr
Application granted granted Critical
Publication of FR2262339B1 publication Critical patent/FR2262339B1/fr
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
    • G03G2215/0446—Magnification degree

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Exposure Or Original Feeding In Electrophotography (AREA)
  • Light Sources And Details Of Projection-Printing Devices (AREA)
  • Control Or Security For Electrophotography (AREA)
FR7505550A 1974-02-22 1975-02-21 Expired FR2262339B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US44501374A 1974-02-22 1974-02-22

Publications (2)

Publication Number Publication Date
FR2262339A1 true FR2262339A1 (en) 1975-09-19
FR2262339B1 FR2262339B1 (en) 1980-09-12

Family

ID=23767298

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7505550A Expired FR2262339B1 (en) 1974-02-22 1975-02-21

Country Status (5)

Country Link
JP (1) JPS50120342A (en)
DE (1) DE2460544A1 (en)
FR (1) FR2262339B1 (en)
GB (1) GB1487793A (en)
NL (1) NL7500336A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2339192A1 (en) * 1976-01-20 1977-08-19 Olivetti & Co Spa ELECTROPHOTOGRAPHIC COPYING MACHINE

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4255042A (en) * 1979-03-26 1981-03-10 International Business Machines Corporation Light pipe for accurate erasure of photoconductor charge
US4655580A (en) * 1984-11-06 1987-04-07 Kabushiki Kaisha Toshiba Image forming apparatus with image forming area selection
JPS6236681A (en) * 1985-08-12 1987-02-17 Toshiba Corp Image forming device
JPS6380279A (en) * 1986-09-24 1988-04-11 Sharp Corp Copying machine with blank lamp
US5274419A (en) * 1989-12-20 1993-12-28 Dainippon Screen Mfg. Co., Ltd. Camera and photosensitive material feed unit useful therefor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2339192A1 (en) * 1976-01-20 1977-08-19 Olivetti & Co Spa ELECTROPHOTOGRAPHIC COPYING MACHINE

Also Published As

Publication number Publication date
FR2262339B1 (en) 1980-09-12
GB1487793A (en) 1977-10-05
NL7500336A (en) 1975-05-30
DE2460544A1 (en) 1975-08-28
JPS50120342A (en) 1975-09-20

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Legal Events

Date Code Title Description
ST Notification of lapse