JPS5240863B2 - - Google Patents

Info

Publication number
JPS5240863B2
JPS5240863B2 JP733474A JP347473A JPS5240863B2 JP S5240863 B2 JPS5240863 B2 JP S5240863B2 JP 733474 A JP733474 A JP 733474A JP 347473 A JP347473 A JP 347473A JP S5240863 B2 JPS5240863 B2 JP S5240863B2
Authority
JP
Japan
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.)
Expired
Application number
JP733474A
Other languages
Japanese (ja)
Other versions
JPS4990924A (en]
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 filed Critical
Priority to JP733474A priority Critical patent/JPS5240863B2/ja
Priority to US426047A priority patent/US3901586A/en
Publication of JPS4990924A publication Critical patent/JPS4990924A/ja
Publication of JPS5240863B2 publication Critical patent/JPS5240863B2/ja
Expired 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
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/24—Optical objectives specially designed for the purposes specified below for reproducing or copying at short object distances
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
    • G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
    • 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
    • G03B3/00—Focusing arrangements of general interest for cameras, projectors or printers
    • G03B3/04—Focusing arrangements of general interest for cameras, projectors or printers adjusting position of image plane without moving lens
    • G03B3/06—Focusing arrangements of general interest for cameras, projectors or printers adjusting position of image plane without moving lens using movable reflectors to alter length of light path

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Variable Magnification In Projection-Type Copying Machines (AREA)
  • Lens Barrels (AREA)
JP733474A 1972-12-28 1972-12-28 Expired JPS5240863B2 (en])

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP733474A JPS5240863B2 (en]) 1972-12-28 1972-12-28
US426047A US3901586A (en) 1972-12-28 1973-12-19 Device for varying magnification produced by an optical system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP733474A JPS5240863B2 (en]) 1972-12-28 1972-12-28

Publications (2)

Publication Number Publication Date
JPS4990924A JPS4990924A (en]) 1974-08-30
JPS5240863B2 true JPS5240863B2 (en]) 1977-10-14

Family

ID=11558314

Family Applications (1)

Application Number Title Priority Date Filing Date
JP733474A Expired JPS5240863B2 (en]) 1972-12-28 1972-12-28

Country Status (2)

Country Link
US (1) US3901586A (en])
JP (1) JPS5240863B2 (en])

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5555364A (en) * 1978-10-19 1980-04-23 Ricoh Co Ltd Slit exposure optical system in electrophotographic copying machine
JPS56133756A (en) * 1980-03-25 1981-10-20 Asahi Optical Co Ltd Optical device for variable magnification copying capable of size enlarging and reducing
JPS5895358A (ja) * 1981-11-30 1983-06-06 Mita Ind Co Ltd 可変倍率静電複写方法
JPS6011829A (ja) * 1983-06-30 1985-01-22 Matsushita Electric Ind Co Ltd 複写倍率変換装置
US4800414A (en) * 1986-03-03 1989-01-24 Minolta Camera Kabushiki Kaisha Magnification varying device for electro-photographic copying machine
JP2834766B2 (ja) * 1988-11-09 1998-12-14 株式会社リコー 画像形成装置における変倍露光装置
JP2002116679A (ja) * 2000-07-31 2002-04-19 Ricoh Co Ltd 画像形成装置及び画像形成方法
JP2002169447A (ja) 2000-09-22 2002-06-14 Ricoh Co Ltd 画像形成装置及び画像形成方法
JP2002174928A (ja) 2000-09-26 2002-06-21 Ricoh Co Ltd 画像形成装置及び画像形成方法
CN100403187C (zh) 2000-10-27 2008-07-16 株式会社理光 图像形成方法及其装置
JP2002244359A (ja) 2000-12-13 2002-08-30 Ricoh Co Ltd 画像形成装置及び画像形成方法
JP2003076160A (ja) 2001-03-02 2003-03-14 Ricoh Co Ltd 画像形成装置、画像形成方法及び両面転写方法
JP2003057905A (ja) 2001-06-05 2003-02-28 Ricoh Co Ltd 画像形成装置及び該画像形成装置を備えた画像形成システム
JP2003076082A (ja) 2001-06-22 2003-03-14 Ricoh Co Ltd 記録体支持部材、記録体搬送装置、画像形成装置、画像形成システム、記録体搬送方法及び画像形成方法
EP1296202A3 (en) 2001-09-21 2003-06-18 Ricoh Company, Ltd. Method and apparatus for producing duplex prints and image forming system using the same
JP2003233287A (ja) 2001-12-07 2003-08-22 Ricoh Co Ltd 画像形成装置及び画像形成方法
CN100403186C (zh) * 2001-12-18 2008-07-16 株式会社理光 图像形成装置，带组件及图像形成系统

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3088368A (en) * 1959-01-15 1963-05-07 Farrand Optical Co Inc Variable magnification optical system
US3317269A (en) * 1962-06-07 1967-05-02 Goodyear Aerospace Corp Autofocus linkage

Also Published As

Publication number Publication date
US3901586A (en) 1975-08-26
JPS4990924A (en]) 1974-08-30

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