JPS57178277A - Illumination device of copying machine or the like - Google Patents

Illumination device of copying machine or the like

Info

Publication number
JPS57178277A
JPS57178277A JP6241881A JP6241881A JPS57178277A JP S57178277 A JPS57178277 A JP S57178277A JP 6241881 A JP6241881 A JP 6241881A JP 6241881 A JP6241881 A JP 6241881A JP S57178277 A JPS57178277 A JP S57178277A
Authority
JP
Japan
Prior art keywords
illumination distribution
light emitting
variable magnification
optical output
auxiliary lamps
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
JP6241881A
Other languages
Japanese (ja)
Inventor
Masaaki Harada
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.)
Fujifilm Business Innovation Corp
Original Assignee
Fuji Xerox 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 Fuji Xerox Co Ltd filed Critical Fuji Xerox Co Ltd
Priority to JP6241881A priority Critical patent/JPS57178277A/en
Publication of JPS57178277A publication Critical patent/JPS57178277A/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
    • G03G15/04036—Details of illuminating systems, e.g. lamps, reflectors
    • 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
    • G03G15/041—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 variable magnification

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Exposure Or Original Feeding In Electrophotography (AREA)
  • Variable Magnification In Projection-Type Copying Machines (AREA)
  • Light Sources And Details Of Projection-Printing Devices (AREA)

Abstract

PURPOSE:To correct an ununiform illumination distribution on photosensitive materials at a variable magnification time and to improve reliability in a simple construction, by providing auxiliary lamps at end parts of a main lamp and changing a composite illumination distribution by changing optical outputs of the auxiliary lamps. CONSTITUTION:A main lamp 14 is provided with light emitting elements 171 at both ends having large optical output, a pair of light emitting elements 172 in the middle having a little large optical output and a light emitting element 173 in the center having little optical output, and its illumination distribution is almost in a U shape having a high illumination intensity at both end parts and having lower intensity in turn to the center. Auxiliary lamps 15 are provided parallelly at the positions almost facing to the elements 171 at both sides and are connected to an electric source 18, and a voltage value of the electric source 18 is controlled by a controller 19 and is constituted so that a voltage value is controlled in accordance with variable magnification signals R after the signals R are inputted into the controller 19. By this way, an ununiform illumination distribution on photosensitive materials at a variable magnification time is corrected.
JP6241881A 1981-04-27 1981-04-27 Illumination device of copying machine or the like Pending JPS57178277A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6241881A JPS57178277A (en) 1981-04-27 1981-04-27 Illumination device of copying machine or the like

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6241881A JPS57178277A (en) 1981-04-27 1981-04-27 Illumination device of copying machine or the like

Publications (1)

Publication Number Publication Date
JPS57178277A true JPS57178277A (en) 1982-11-02

Family

ID=13199574

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6241881A Pending JPS57178277A (en) 1981-04-27 1981-04-27 Illumination device of copying machine or the like

Country Status (1)

Country Link
JP (1) JPS57178277A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60260029A (en) * 1984-06-06 1985-12-23 Canon Inc Image forming device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60260029A (en) * 1984-06-06 1985-12-23 Canon Inc Image forming device

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