GB1487793A - Exposure and fade-out control for electrostatic reproducing machines - Google Patents

Exposure and fade-out control for electrostatic reproducing machines

Info

Publication number
GB1487793A
GB1487793A GB511575A GB511575A GB1487793A GB 1487793 A GB1487793 A GB 1487793A GB 511575 A GB511575 A GB 511575A GB 511575 A GB511575 A GB 511575A GB 1487793 A GB1487793 A GB 1487793A
Authority
GB
United Kingdom
Prior art keywords
belt
image
lamps
station
feb
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
GB511575A
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.)
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 GB1487793A publication Critical patent/GB1487793A/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
    • G03G2215/0446—Magnification degree

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Light Sources And Details Of Projection-Printing Devices (AREA)
  • Control Or Security For Electrophotography (AREA)
  • Exposure Or Original Feeding In Electrophotography (AREA)
GB511575A 1974-02-22 1975-02-06 Exposure and fade-out control for electrostatic reproducing machines Expired GB1487793A (en)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
GB1487793A true GB1487793A (en) 1977-10-05

Family

ID=23767298

Family Applications (1)

Application Number Title Priority Date Filing Date
GB511575A Expired GB1487793A (en) 1974-02-22 1975-02-06 Exposure and fade-out control for electrostatic reproducing machines

Country Status (5)

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

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0180984A3 (en) * 1984-11-06 1986-07-30 Kabushiki Kaisha Toshiba Image forming apparatus with imager forming area selection
US4884107A (en) * 1985-08-12 1989-11-28 Kabushiki Kaisha Toshiba Image forming apparatus for blanking portions of a document

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1055822B (it) * 1976-01-20 1982-01-11 Olivetti E C Spa Macchina copiatrice elettrofotografica
US4255042A (en) * 1979-03-26 1981-03-10 International Business Machines Corporation Light pipe for accurate erasure of photoconductor charge
JPS6380279A (ja) * 1986-09-24 1988-04-11 Sharp Corp ブランクランプを備えた複写機
US5274419A (en) * 1989-12-20 1993-12-28 Dainippon Screen Mfg. Co., Ltd. Camera and photosensitive material feed unit useful therefor

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0180984A3 (en) * 1984-11-06 1986-07-30 Kabushiki Kaisha Toshiba Image forming apparatus with imager forming area selection
US4655580A (en) * 1984-11-06 1987-04-07 Kabushiki Kaisha Toshiba Image forming apparatus with image forming area selection
US4884107A (en) * 1985-08-12 1989-11-28 Kabushiki Kaisha Toshiba Image forming apparatus for blanking portions of a document

Also Published As

Publication number Publication date
NL7500336A (nl) 1975-05-30
FR2262339A1 (enrdf_load_stackoverflow) 1975-09-19
FR2262339B1 (enrdf_load_stackoverflow) 1980-09-12
DE2460544A1 (de) 1975-08-28
JPS50120342A (enrdf_load_stackoverflow) 1975-09-20

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Legal Events

Date Code Title Description
PS Patent sealed
746 Register noted 'licences of right' (sect. 46/1977)
PCNP Patent ceased through non-payment of renewal fee