JPS56149065A - Electrophotographic copier - Google Patents

Electrophotographic copier

Info

Publication number
JPS56149065A
JPS56149065A JP5311680A JP5311680A JPS56149065A JP S56149065 A JPS56149065 A JP S56149065A JP 5311680 A JP5311680 A JP 5311680A JP 5311680 A JP5311680 A JP 5311680A JP S56149065 A JPS56149065 A JP S56149065A
Authority
JP
Japan
Prior art keywords
original
plate
mirror
reflected light
scanning
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.)
Pending
Application number
JP5311680A
Other languages
Japanese (ja)
Inventor
Hiroyuki Miyake
Nobuhiro Kasama
Seiji Sagara
Kazuo Kagiura
Nobukazu Sasaki
Takaharu Yonemori
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 Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Priority to JP5311680A priority Critical patent/JPS56149065A/en
Publication of JPS56149065A publication Critical patent/JPS56149065A/en
Pending 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Exposure Or Original Feeding In Electrophotography (AREA)

Abstract

PURPOSE:To perform exposure of the margin in the leading end by forming a reflection member below the reference part for positioning an original, shutting off the light from the leading end part of the original with the reflection member, and irradiating the lighting reflected light reflected by the reflection member to a photoreceptor. CONSTITUTION:The plate end face 22' of an original platen 13 is used as a reference for positioning the leading end O1 on the scanning start side of the original O. A moving mirror 14 and a moving lighting means with the mirror 14 are moved forward in an arrow A direction from the home position. Before the optical axis X scans the original O, the under surface of a stationary reflection plate 23 is scanned. The scanning of the plate 23 is started earlier than the original O, and the white diffusion paint of the plate 23 diffuses and reflects the light arriving from a lamp 16 and the reflected light reflected by a reflection shade 17, thus a large quarity of the diffused and reflected light is entered to the mirror 14. Since the mirror 14 reflects the diffused and reflected light so as to enter the same to an optical lens, the original image is projected continuously to the scanning end Q of the plate 23. The fine width parts O1, O2 on the scanning start side of the original O are not projected to the photoreceptor. Hence, margin parts are formed in the parts corresponding to O1, O2 of the original O.
JP5311680A 1980-04-22 1980-04-22 Electrophotographic copier Pending JPS56149065A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5311680A JPS56149065A (en) 1980-04-22 1980-04-22 Electrophotographic copier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5311680A JPS56149065A (en) 1980-04-22 1980-04-22 Electrophotographic copier

Publications (1)

Publication Number Publication Date
JPS56149065A true JPS56149065A (en) 1981-11-18

Family

ID=12933823

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5311680A Pending JPS56149065A (en) 1980-04-22 1980-04-22 Electrophotographic copier

Country Status (1)

Country Link
JP (1) JPS56149065A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57200072A (en) * 1981-06-02 1982-12-08 Mita Ind Co Ltd Electrostatic type copying machine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57200072A (en) * 1981-06-02 1982-12-08 Mita Ind Co Ltd Electrostatic type copying machine

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