FR2363820A1 - Dispositif de formation d'images - Google Patents

Dispositif de formation d'images

Info

Publication number
FR2363820A1
FR2363820A1 FR7726614A FR7726614A FR2363820A1 FR 2363820 A1 FR2363820 A1 FR 2363820A1 FR 7726614 A FR7726614 A FR 7726614A FR 7726614 A FR7726614 A FR 7726614A FR 2363820 A1 FR2363820 A1 FR 2363820A1
Authority
FR
France
Prior art keywords
along
photoreceptor
optical path
reflected
present
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.)
Granted
Application number
FR7726614A
Other languages
English (en)
Other versions
FR2363820B1 (fr
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 FR2363820A1 publication Critical patent/FR2363820A1/fr
Application granted granted Critical
Publication of FR2363820B1 publication Critical patent/FR2363820B1/fr
Granted 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
    • G03G2215/0448—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)
  • Light Sources And Details Of Projection-Printing Devices (AREA)
  • Control Or Security For Electrophotography (AREA)
  • Holders For Sensitive Materials And Originals (AREA)
  • Optical Systems Of Projection Type Copiers (AREA)

Abstract

Dispositif de formation d'images. La machine de reproduction de la présente invention utilise un motif lumineux réfléchi le long d'un trajet optique sur la surface d'un photorécepteur par déplacement d'un document supporté par une bande transporteuse le long d'une source fixe de rayonnement lumineux et par l'emploi d'un moyen de miroir réfléchissant. La présente invention est caractérisée par l'utilisation d'un réflecteur 130 à facettes multiples 136, 138 disposé sur l'une des faces d'une bande destinée à porter les documents 120 de façon que le rayonnement lumineux issu de la source puisse être réflechi le long du trajet optique pour décharger ainsi le photorécepteur selon des surfaces situées près de celle frappée par le motif lumineux. Application à l'affaiblissement des zones sombres apparaissant sur la reproduction et correspondant aux bords du document reproduit
FR7726614A 1976-09-02 1977-09-01 Dispositif de formation d'images Granted FR2363820A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/719,757 US4120579A (en) 1976-09-02 1976-09-02 Imaging system for a photocopying device

Publications (2)

Publication Number Publication Date
FR2363820A1 true FR2363820A1 (fr) 1978-03-31
FR2363820B1 FR2363820B1 (fr) 1984-04-06

Family

ID=24891239

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7726614A Granted FR2363820A1 (fr) 1976-09-02 1977-09-01 Dispositif de formation d'images

Country Status (7)

Country Link
US (1) US4120579A (fr)
JP (1) JPS6018987B2 (fr)
CA (1) CA1102399A (fr)
DE (1) DE2728851C2 (fr)
FR (1) FR2363820A1 (fr)
GB (1) GB1581874A (fr)
NL (1) NL7707775A (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4545000A (en) * 1983-10-03 1985-10-01 Gte Products Corporation Projection lamp unit
US4868918A (en) * 1985-06-18 1989-09-19 Kabushiki Kaisha Toshiba Image forming system
US4618138A (en) * 1985-10-17 1986-10-21 Xerox Corporation Plural belt document feeder

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1315060A (fr) * 1961-11-06 1963-01-18 Dispositif d'entraînement des documents pour appareils de micro-filmage et analogues
US3788737A (en) * 1972-10-13 1974-01-29 Xerox Corp Luminescent cover
FR2214141A1 (fr) * 1973-01-15 1974-08-09 Xerox Corp
FR2231031A1 (fr) * 1973-05-23 1974-12-20 Xerox Corp
FR2322394A1 (fr) * 1975-09-01 1977-03-25 Oce Van Der Grinten Nv Procede et dispositif pour eviter les effets de silhouettage pendant l'exposition episcopique d'un original

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2970514A (en) * 1956-03-20 1961-02-07 Peerless Photo Products Inc Light intensifying means for copying camera
US3062110A (en) * 1959-07-02 1962-11-06 Xerox Corp Exposure station apparatus
US3497296A (en) * 1967-06-12 1970-02-24 Xerox Corp Xerographic exposure apparatus
DE2020794C3 (de) * 1969-04-28 1973-12-06 Canon Kk Elektrofotografisches Kopiergeraet
DE2150563A1 (de) * 1971-10-11 1973-04-19 Kalle Ag Vervielfaeltigungsverfahren und -geraet
DE2358370A1 (de) * 1973-11-23 1975-06-05 Lumoprint Zindler Kg Vorrichtung zum herstellen von kopien
NL174500C (nl) * 1973-11-08 1984-06-18 Oce Van Der Grinten Nv Kopieerinrichting met een systeem voor een reflexbelichting van het origineel.
US4008956A (en) * 1975-03-24 1977-02-22 Xerox Corporation Document handling system for pre-collation copying
US3998541A (en) * 1975-04-18 1976-12-21 Eastman Kodak Company Illumination arrangement providing for interframe flashdown

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1315060A (fr) * 1961-11-06 1963-01-18 Dispositif d'entraînement des documents pour appareils de micro-filmage et analogues
US3788737A (en) * 1972-10-13 1974-01-29 Xerox Corp Luminescent cover
FR2214141A1 (fr) * 1973-01-15 1974-08-09 Xerox Corp
FR2231031A1 (fr) * 1973-05-23 1974-12-20 Xerox Corp
FR2322394A1 (fr) * 1975-09-01 1977-03-25 Oce Van Der Grinten Nv Procede et dispositif pour eviter les effets de silhouettage pendant l'exposition episcopique d'un original

Also Published As

Publication number Publication date
US4120579A (en) 1978-10-17
JPS6018987B2 (ja) 1985-05-14
CA1102399A (fr) 1981-06-02
DE2728851C2 (de) 1986-05-07
DE2728851A1 (de) 1978-03-09
NL7707775A (nl) 1978-03-06
JPS5330344A (en) 1978-03-22
FR2363820B1 (fr) 1984-04-06
GB1581874A (en) 1980-12-31

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Legal Events

Date Code Title Description
ST Notification of lapse