FR2322394A1 - Procede et dispositif pour eviter les effets de silhouettage pendant l'exposition episcopique d'un original - Google Patents

Procede et dispositif pour eviter les effets de silhouettage pendant l'exposition episcopique d'un original

Info

Publication number
FR2322394A1
FR2322394A1 FR7626104A FR7626104A FR2322394A1 FR 2322394 A1 FR2322394 A1 FR 2322394A1 FR 7626104 A FR7626104 A FR 7626104A FR 7626104 A FR7626104 A FR 7626104A FR 2322394 A1 FR2322394 A1 FR 2322394A1
Authority
FR
France
Prior art keywords
silhouetting
episcopic
avoiding
exposure
original
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
FR7626104A
Other languages
English (en)
Other versions
FR2322394B3 (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.)
Canon Production Printing Holding BV
Original Assignee
Oce Van der Grinten NV
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 Oce Van der Grinten NV filed Critical Oce Van der Grinten NV
Publication of FR2322394A1 publication Critical patent/FR2322394A1/fr
Application granted granted Critical
Publication of FR2322394B3 publication Critical patent/FR2322394B3/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
    • G03G15/60—Apparatus which relate to the handling of originals
    • G03G15/605—Holders for originals or exposure platens
    • 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)
  • Holders For Sensitive Materials And Originals (AREA)
FR7626104A 1975-09-01 1976-08-30 Procede et dispositif pour eviter les effets de silhouettage pendant l'exposition episcopique d'un original Granted FR2322394A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7510270A NL7510270A (nl) 1975-09-01 1975-09-01 Methode en middelen voor het vermijden van rand- schaduweffekten bij episkopische belichting van een origineel.

Publications (2)

Publication Number Publication Date
FR2322394A1 true FR2322394A1 (fr) 1977-03-25
FR2322394B3 FR2322394B3 (fr) 1979-10-05

Family

ID=19824385

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7626104A Granted FR2322394A1 (fr) 1975-09-01 1976-08-30 Procede et dispositif pour eviter les effets de silhouettage pendant l'exposition episcopique d'un original

Country Status (5)

Country Link
US (1) US4095895A (fr)
JP (1) JPS5913030B2 (fr)
DE (1) DE7625447U1 (fr)
FR (1) FR2322394A1 (fr)
NL (1) NL7510270A (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2363821A1 (fr) * 1976-09-02 1978-03-31 Xerox Corp Dispositif d'exposition pour une machine de reproduction de documents muni d'un reflecteur a facettes d'affaiblissement des zones d'ombre correspondant aux bords du document
FR2363820A1 (fr) * 1976-09-02 1978-03-31 Xerox Corp Dispositif de formation d'images
FR2412877A1 (fr) * 1977-12-23 1979-07-20 Agfa Gevaert Ag Copieur optique

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5593821U (fr) * 1978-12-19 1980-06-28
US4450536A (en) * 1982-02-05 1984-05-22 Schroeder Warren E Optical composing stage

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3395610A (en) * 1965-05-11 1968-08-06 American Photocopy Equip Co Electrostatic copying machine for books and the like
US3815992A (en) * 1969-10-30 1974-06-11 Minolta Camera Kk Projection type duplicator
US3671121A (en) * 1970-08-05 1972-06-20 Eastman Kodak Co Exposure device for controlling charge on a portion of a charged surface bordering an image frame projected on the charged surface
JPS4926590B1 (fr) * 1970-09-03 1974-07-10
US3771082A (en) * 1972-01-03 1973-11-06 Xerox Corp Copying apparatus with auxiliary light source for illuminating an original to be reproduced
US3724942A (en) * 1972-04-12 1973-04-03 Ibm Photoconductor discharge shutter assembly
US3998541A (en) * 1975-04-18 1976-12-21 Eastman Kodak Company Illumination arrangement providing for interframe flashdown

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2363821A1 (fr) * 1976-09-02 1978-03-31 Xerox Corp Dispositif d'exposition pour une machine de reproduction de documents muni d'un reflecteur a facettes d'affaiblissement des zones d'ombre correspondant aux bords du document
FR2363820A1 (fr) * 1976-09-02 1978-03-31 Xerox Corp Dispositif de formation d'images
FR2412877A1 (fr) * 1977-12-23 1979-07-20 Agfa Gevaert Ag Copieur optique

Also Published As

Publication number Publication date
US4095895A (en) 1978-06-20
NL7510270A (nl) 1977-03-03
DE7625447U1 (de) 1976-12-02
JPS5913030B2 (ja) 1984-03-27
JPS5229744A (en) 1977-03-05
FR2322394B3 (fr) 1979-10-05

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