JPS57192975A - Electrophotographic copying machine - Google Patents

Electrophotographic copying machine

Info

Publication number
JPS57192975A
JPS57192975A JP7906481A JP7906481A JPS57192975A JP S57192975 A JPS57192975 A JP S57192975A JP 7906481 A JP7906481 A JP 7906481A JP 7906481 A JP7906481 A JP 7906481A JP S57192975 A JPS57192975 A JP S57192975A
Authority
JP
Japan
Prior art keywords
optical system
image formation
formation optical
axial direction
wave guide
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
JP7906481A
Other languages
Japanese (ja)
Inventor
Tatsuo Hirono
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.)
Ricoh Co Ltd
Original Assignee
Ricoh 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 Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP7906481A priority Critical patent/JPS57192975A/en
Publication of JPS57192975A publication Critical patent/JPS57192975A/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)

Abstract

PURPOSE:To improve space efficiency by fitting a refractive index condensing type slag type light wave guide with variable magnification characteristics as an image formation optical system and exposing light in the x-axial direction to which a manuscript board or the like moves at a specific moving speed. CONSTITUTION:A refractive index condensing type slag type light wave guide 4 with variable magnification characteristics of change magnification My is fitted as an image formation optical system in the y-axial direction intersecting with the moving direction, x-axial direction, of a manuscript board, etc. in an surface intersecting with the optical axis of the image formation optical system. The relative speed among 3 elements, the manuscript board 6, the image formation optical system 4 and a photosensitive element 7, is set up so that light is exposed in the x-axial direction mentioned above at a moving speed of My times the scanning speed at the time of same magnification. Said variable magnification rate of the image formation optical system 4 is set up by fixing the values such as line length Z0 of the light wave guide 4 and the shown distance (l1+ l0) to appropriate values.
JP7906481A 1981-05-25 1981-05-25 Electrophotographic copying machine Pending JPS57192975A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7906481A JPS57192975A (en) 1981-05-25 1981-05-25 Electrophotographic copying machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7906481A JPS57192975A (en) 1981-05-25 1981-05-25 Electrophotographic copying machine

Publications (1)

Publication Number Publication Date
JPS57192975A true JPS57192975A (en) 1982-11-27

Family

ID=13679451

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7906481A Pending JPS57192975A (en) 1981-05-25 1981-05-25 Electrophotographic copying machine

Country Status (1)

Country Link
JP (1) JPS57192975A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10908544B2 (en) * 2019-06-05 2021-02-02 Canon Kabushiki Kaisha Discriminating device and image forming apparatus

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5391029A (en) * 1977-01-22 1978-08-10 Babcock Hitachi Kk Followwup system pipe cooling welding method of welding heat source

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5391029A (en) * 1977-01-22 1978-08-10 Babcock Hitachi Kk Followwup system pipe cooling welding method of welding heat source

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10908544B2 (en) * 2019-06-05 2021-02-02 Canon Kabushiki Kaisha Discriminating device and image forming apparatus

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