JPS5768876A - Copying device - Google Patents

Copying device

Info

Publication number
JPS5768876A
JPS5768876A JP14529680A JP14529680A JPS5768876A JP S5768876 A JPS5768876 A JP S5768876A JP 14529680 A JP14529680 A JP 14529680A JP 14529680 A JP14529680 A JP 14529680A JP S5768876 A JPS5768876 A JP S5768876A
Authority
JP
Japan
Prior art keywords
photosensitive body
opening
charger
optical
holding member
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
JP14529680A
Other languages
Japanese (ja)
Other versions
JPH0255766B2 (en
Inventor
Haruhisa Honda
Shinji Murata
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 JP14529680A priority Critical patent/JPS5768876A/en
Publication of JPS5768876A publication Critical patent/JPS5768876A/en
Publication of JPH0255766B2 publication Critical patent/JPH0255766B2/ja
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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Exposure Or Original Feeding In Electrophotography (AREA)
  • Control Of Exposure In Printing And Copying (AREA)

Abstract

PURPOSE:To obtain a uniform image extending over a long period of time, by providing a photodetecting means so as to detect a light beam from a part of a fluorescent lamp, which is nearest the middle point between the center part and the end part in the direction along the longitudinal direction of the fluorescent lamp, in an area where an original to be copied has been placed. CONSTITUTION:As for a rotation route of a photosensitive body 11, a charger 12 is provided in front of an exposure position 11', and the photosensitive body 11 is charged by operation of this charger 12. After that, the photosensitive body 11 is brought to exposure of an optical image of an original, by which an electrostatic latent image is formed on the photosensitive body 11, is developed 13 and is transferred 14. A light source 2 and an passive reflector 3 are held by a holding member 4, and an optical opening 4a is provided on this holding member 4. Also, a photodetecting element 5 is placed in the proximity of this optical opening 4a, or so as to tightly adhere to this opening, a part of a projecting light beam of the light source 2 passes through the opening 4a, is made incident to the photodetecting element 5, and the element 5 outputs an electric signal corresponding to the sensitive light quantity.
JP14529680A 1980-10-17 1980-10-17 Copying device Granted JPS5768876A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14529680A JPS5768876A (en) 1980-10-17 1980-10-17 Copying device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14529680A JPS5768876A (en) 1980-10-17 1980-10-17 Copying device

Publications (2)

Publication Number Publication Date
JPS5768876A true JPS5768876A (en) 1982-04-27
JPH0255766B2 JPH0255766B2 (en) 1990-11-28

Family

ID=15381857

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14529680A Granted JPS5768876A (en) 1980-10-17 1980-10-17 Copying device

Country Status (1)

Country Link
JP (1) JPS5768876A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60244942A (en) * 1984-05-21 1985-12-04 Sharp Corp Automatic exposure adjusting device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60244942A (en) * 1984-05-21 1985-12-04 Sharp Corp Automatic exposure adjusting device
JPH0452932B2 (en) * 1984-05-21 1992-08-25 Sharp Kk

Also Published As

Publication number Publication date
JPH0255766B2 (en) 1990-11-28

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