JPS57178274A - Exposure optical system of electrophotographic copying machine - Google Patents

Exposure optical system of electrophotographic copying machine

Info

Publication number
JPS57178274A
JPS57178274A JP6241581A JP6241581A JPS57178274A JP S57178274 A JPS57178274 A JP S57178274A JP 6241581 A JP6241581 A JP 6241581A JP 6241581 A JP6241581 A JP 6241581A JP S57178274 A JPS57178274 A JP S57178274A
Authority
JP
Japan
Prior art keywords
mirrors
optical system
lens
carriages
making
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
JP6241581A
Other languages
Japanese (ja)
Inventor
Kenji Kanzaki
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 JP6241581A priority Critical patent/JPS57178274A/en
Publication of JPS57178274A publication Critical patent/JPS57178274A/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
    • G03G15/041—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)
  • Optical Systems Of Projection Type Copiers (AREA)

Abstract

PURPOSE:To make magnitifcation variable with good accuracy and construction simple by making the 1st and 2nd mirrors movable relatively in forward and backward moving directions to permit changing of the spacing between both mirrors and making a lens movable. CONSTITUTION:The 1st, 2nd mirrors 3, 4 are provided to the 1st, 2nd carriages 9, 11 provided with pulleys 8, 10, and are so arranged as to have mutually right- angled position relations. The carriages 9, 11 are connected respectively to a cable 14 wound on a capstan pulley 12, an idler pulley 13 or the like. A follower 33 provided to a lens mount 32 fixed to a lens 2 is made movable along a cam face 34 which is so set as to match the fixed point of a photoreceptor 7. Since the 1st, 2nd mirrors are moved independently during magnification changing by this, the optical system is improved of accuracy and simplified of construction.
JP6241581A 1981-04-27 1981-04-27 Exposure optical system of electrophotographic copying machine Pending JPS57178274A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6241581A JPS57178274A (en) 1981-04-27 1981-04-27 Exposure optical system of electrophotographic copying machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6241581A JPS57178274A (en) 1981-04-27 1981-04-27 Exposure optical system of electrophotographic copying machine

Publications (1)

Publication Number Publication Date
JPS57178274A true JPS57178274A (en) 1982-11-02

Family

ID=13199489

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6241581A Pending JPS57178274A (en) 1981-04-27 1981-04-27 Exposure optical system of electrophotographic copying machine

Country Status (1)

Country Link
JP (1) JPS57178274A (en)

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