JPS56116059A - Electronic copying machine - Google Patents

Electronic copying machine

Info

Publication number
JPS56116059A
JPS56116059A JP1963180A JP1963180A JPS56116059A JP S56116059 A JPS56116059 A JP S56116059A JP 1963180 A JP1963180 A JP 1963180A JP 1963180 A JP1963180 A JP 1963180A JP S56116059 A JPS56116059 A JP S56116059A
Authority
JP
Japan
Prior art keywords
exposure
picture
blank
photoreceptor
light
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
JP1963180A
Other languages
Japanese (ja)
Inventor
Junichiro Kanbe
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 JP1963180A priority Critical patent/JPS56116059A/en
Publication of JPS56116059A publication Critical patent/JPS56116059A/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
    • 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
    • G03G15/043—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 controlling illumination or exposure
    • G03G15/0435—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 controlling illumination or exposure by introducing an optical element in the optical path, e.g. a filter

Abstract

PURPOSE:To prevent picture defective even if a photoreceptor has large light hysteresis, by varying blank exposure in proportion to picture exposure. CONSTITUTION:Through the operation of plunger 10, reflector 11 moves to the solid-line position, and then part of light from light source 1 is reflected by reflector 11 to perform the blank exposure of photoreceptor 6 via the same path with picture exposure as shown by the dotted lines. An adjustment of initial proper exposure to the variance in sensitivity of photoreceptor 6 and an adjustment corresponding to fluctuations of sensitivity are made through exposure aperture 7 of in-mirror lens 8 as usual. In this case, since the blank exposure is performed via the same path with the picture exposure, varying the quantity of the picture exposure via aperture 7 varies the blank exposure in proportion to it. Therefore, there is not need to set the blank exposure much greater than the exposure of a picture light part like the conventional method.
JP1963180A 1980-02-19 1980-02-19 Electronic copying machine Pending JPS56116059A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1963180A JPS56116059A (en) 1980-02-19 1980-02-19 Electronic copying machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1963180A JPS56116059A (en) 1980-02-19 1980-02-19 Electronic copying machine

Publications (1)

Publication Number Publication Date
JPS56116059A true JPS56116059A (en) 1981-09-11

Family

ID=12004544

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1963180A Pending JPS56116059A (en) 1980-02-19 1980-02-19 Electronic copying machine

Country Status (1)

Country Link
JP (1) JPS56116059A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6084552A (en) * 1983-10-17 1985-05-13 Canon Inc Lighting device
JPS6275672A (en) * 1985-09-30 1987-04-07 Ricoh Co Ltd Copying device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6084552A (en) * 1983-10-17 1985-05-13 Canon Inc Lighting device
JPS6275672A (en) * 1985-09-30 1987-04-07 Ricoh Co Ltd Copying device

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