JPS5786862A - Copying machine - Google Patents

Copying machine

Info

Publication number
JPS5786862A
JPS5786862A JP15126981A JP15126981A JPS5786862A JP S5786862 A JPS5786862 A JP S5786862A JP 15126981 A JP15126981 A JP 15126981A JP 15126981 A JP15126981 A JP 15126981A JP S5786862 A JPS5786862 A JP S5786862A
Authority
JP
Japan
Prior art keywords
main light
luminous flux
magnification
light beam
image
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
JP15126981A
Other languages
Japanese (ja)
Inventor
Kunehiteru Buiruherumu
Peetaasudorufu Geharuto
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
Publication of JPS5786862A publication Critical patent/JPS5786862A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B27/00—Photographic printing apparatus
    • G03B27/32—Projection printing apparatus, e.g. enlarger, copying camera
    • G03B27/52—Details
    • G03B27/522—Projection optics
    • G03B27/525—Projection optics for slit exposure
    • G03B27/528—Projection optics for slit exposure in which the projection optics remain stationary
    • 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)
  • Optics & Photonics (AREA)
  • General Physics & Mathematics (AREA)
  • Optical Systems Of Projection Type Copiers (AREA)
  • Exposure Or Original Feeding In Electrophotography (AREA)
  • Variable Magnification In Projection-Type Copying Machines (AREA)
  • Facsimile Scanning Arrangements (AREA)

Abstract

PURPOSE:To change a magnification easily and to obtain an image of uniform quality, by slanting a main light beam of projected luminous flux, exposing an original image to a photoreceptor with the 1st magnification, and another main light beam of projected luminous flux, exposing the original image to the photoreceptor with the 2nd magnification, to each other. CONSTITUTION:For copying with an original reduced to the zone B of a process cylinder 8, a lens 5 moves to a position 5' shown by a broken line and the center point M of the lens also moves to an M'. In this case, a mirror 4 moves to a position 4', and consequently a main light beam 14 of luminous flux of a projected original image is set at a position 14'. The said main light beams 14 and 14' slant at an angle W to each other. For copying, the magnification is performed by the said movements of the lens 5 and mirror 4 to the positions 5' and 4', the main light beam 14' of projected luminous flux of an reduced image strikes the zone B and its angle to a lens optical axis and the angle of incidence of the luminous flux main light beams are equal during forward and backward movements, so that an image of uniform quality is obtained.
JP15126981A 1980-09-24 1981-09-24 Copying machine Pending JPS5786862A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19803035953 DE3035953C2 (en) 1980-09-24 1980-09-24 Photocopier

Publications (1)

Publication Number Publication Date
JPS5786862A true JPS5786862A (en) 1982-05-31

Family

ID=6112722

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15126981A Pending JPS5786862A (en) 1980-09-24 1981-09-24 Copying machine

Country Status (2)

Country Link
JP (1) JPS5786862A (en)
DE (1) DE3035953C2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102095736A (en) * 2010-10-29 2011-06-15 华南理工大学 Dual-optical-magnification image acquisition device and image acquisition control and process system

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5895358A (en) * 1981-11-30 1983-06-06 Mita Ind Co Ltd Electrostatic copying method and copying machine

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4243312A (en) * 1977-10-11 1981-01-06 Minolta Camera Kabushiki Kaisha Electrophotographic copying apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102095736A (en) * 2010-10-29 2011-06-15 华南理工大学 Dual-optical-magnification image acquisition device and image acquisition control and process system

Also Published As

Publication number Publication date
DE3035953C2 (en) 1983-07-07
DE3035953A1 (en) 1982-05-19

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