JPS5722257A - Exposure device of copying machine - Google Patents

Exposure device of copying machine

Info

Publication number
JPS5722257A
JPS5722257A JP9658680A JP9658680A JPS5722257A JP S5722257 A JPS5722257 A JP S5722257A JP 9658680 A JP9658680 A JP 9658680A JP 9658680 A JP9658680 A JP 9658680A JP S5722257 A JPS5722257 A JP S5722257A
Authority
JP
Japan
Prior art keywords
original
light
illumination
constant
intensity
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
JP9658680A
Other languages
Japanese (ja)
Inventor
Koji Tachikawa
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 Finetech Nisca Inc
Original Assignee
Copyer Co Ltd
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 Copyer Co Ltd filed Critical Copyer Co Ltd
Priority to JP9658680A priority Critical patent/JPS5722257A/en
Publication of JPS5722257A publication Critical patent/JPS5722257A/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
    • G03G15/043—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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optical Systems Of Projection Type Copiers (AREA)
  • Exposure Or Original Feeding In Electrophotography (AREA)

Abstract

PURPOSE:To expose an original to uniform intensity of light all over the scanning region, by controlling an exposure lamp with a light intensity-checking element so as to make it constant in intensity. CONSTITUTION:At the same time as start of copying action, a reflective mirror 10 turns following an oscillator 12 moving, and the light emitted from an exposure lamp 9 is reflected from the mirror 10, always catches the oscillator 12, and scans an original 1. During scanning the original 1, illumination of the original face tends to vary gradually, but a light intensity-checking element 11 catches the slit light scanning, and controls the lamp 9 so as to keep its illumination constant, permitting the original to be also scanned by constant illumination.
JP9658680A 1980-07-15 1980-07-15 Exposure device of copying machine Pending JPS5722257A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9658680A JPS5722257A (en) 1980-07-15 1980-07-15 Exposure device of copying machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9658680A JPS5722257A (en) 1980-07-15 1980-07-15 Exposure device of copying machine

Publications (1)

Publication Number Publication Date
JPS5722257A true JPS5722257A (en) 1982-02-05

Family

ID=14169028

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9658680A Pending JPS5722257A (en) 1980-07-15 1980-07-15 Exposure device of copying machine

Country Status (1)

Country Link
JP (1) JPS5722257A (en)

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