DE3380881D1 - Variable magnification electrostatic copying apparatus - Google Patents

Variable magnification electrostatic copying apparatus

Info

Publication number
DE3380881D1
DE3380881D1 DE8383111818T DE3380881T DE3380881D1 DE 3380881 D1 DE3380881 D1 DE 3380881D1 DE 8383111818 T DE8383111818 T DE 8383111818T DE 3380881 T DE3380881 T DE 3380881T DE 3380881 D1 DE3380881 D1 DE 3380881D1
Authority
DE
Germany
Prior art keywords
variable magnification
copying apparatus
electrostatic copying
magnification electrostatic
variable
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.)
Expired
Application number
DE8383111818T
Other languages
English (en)
Inventor
Nobuhiko Kozuka
Hiromi Sakata
Atsushi Kano
Shigeo Koyama
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.)
Kyocera Mita Industrial Co Ltd
Original Assignee
Mita Industrial 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 Mita Industrial Co Ltd filed Critical Mita Industrial Co Ltd
Application granted granted Critical
Publication of DE3380881D1 publication Critical patent/DE3380881D1/de
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
    • G03G15/0415—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 and means for controlling illumination or exposure
    • 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
    • G03B27/526—Projection optics for slit exposure in which the projection optics move
    • 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)
  • Optics & Photonics (AREA)
  • Optical Systems Of Projection Type Copiers (AREA)
  • Exposure Or Original Feeding In Electrophotography (AREA)
  • Variable Magnification In Projection-Type Copying Machines (AREA)
DE8383111818T 1982-11-30 1983-11-25 Variable magnification electrostatic copying apparatus Expired DE3380881D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57208488A JPS5999429A (ja) 1982-11-30 1982-11-30 可変倍率静電複写機

Publications (1)

Publication Number Publication Date
DE3380881D1 true DE3380881D1 (en) 1989-12-28

Family

ID=16556989

Family Applications (2)

Application Number Title Priority Date Filing Date
DE8383111818T Expired DE3380881D1 (en) 1982-11-30 1983-11-25 Variable magnification electrostatic copying apparatus
DE87108010T Expired - Fee Related DE3382703T2 (de) 1982-11-30 1983-11-25 Elektrostatisches Kopiergerät mit veränderbarer Vergrösserung.

Family Applications After (1)

Application Number Title Priority Date Filing Date
DE87108010T Expired - Fee Related DE3382703T2 (de) 1982-11-30 1983-11-25 Elektrostatisches Kopiergerät mit veränderbarer Vergrösserung.

Country Status (4)

Country Link
US (1) US4582418A (de)
EP (2) EP0245880B1 (de)
JP (1) JPS5999429A (de)
DE (2) DE3380881D1 (de)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4740810A (en) * 1985-07-09 1988-04-26 Minolta Camera Kabushiki Kaisha Copying apparatus
US4819029A (en) * 1986-01-29 1989-04-04 Minolta Camera Kabushiki Kaisha Copying machine capable of producing a copy with a filing margin
JPS62192763A (ja) * 1986-02-19 1987-08-24 Ricoh Co Ltd 複写装置
JPS6321641A (ja) * 1986-07-15 1988-01-29 Ricoh Co Ltd 複写機の照度ムラ補正装置
JP2582411B2 (ja) * 1987-07-30 1997-02-19 三田工業株式会社 画像形成装置におけるレンズ制御方法
JPH01142541A (ja) * 1987-11-27 1989-06-05 Brother Ind Ltd 画像形成装置
US5012278A (en) * 1988-06-25 1991-04-30 Mita Industrial Co., Ltd. Document density detector apparatus
JPH0766151B2 (ja) * 1989-12-18 1995-07-19 シャープ株式会社 電子写真複写機の光学変倍機構
JP2552390B2 (ja) * 1990-10-29 1996-11-13 シャープ株式会社 光学ユニット
JP3483381B2 (ja) * 1996-01-06 2004-01-06 キヤノン株式会社 画像形成装置及びそれを用いた倍率補正方法
JP3384674B2 (ja) * 1996-03-13 2003-03-10 京セラミタ株式会社 画像形成装置の初期動作制御装置
US8259366B2 (en) * 2006-07-28 2012-09-04 Canon Kabushiki Kaisha Image reading apparatus

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3476478A (en) * 1967-01-03 1969-11-04 Xerox Corp Apparatus for changing the magnification of a photocopier without changing the conjugate length of the optical system
JPS4918539U (de) * 1972-05-19 1974-02-16
GB1444099A (en) * 1973-06-25 1976-07-28 Oce Van Der Grinten Nv Electrophotographic copier
US3897148A (en) * 1973-11-29 1975-07-29 Ibm Optical scanning system
US4158497A (en) * 1976-08-31 1979-06-19 Ricoh Co., Ltd. Copying apparatus
GB1525218A (en) * 1976-09-07 1978-09-20 Ibm Electrophotographic copying machine
DE2949338C2 (de) * 1978-12-08 1986-06-19 Canon K.K., Tokio/Tokyo Vorrichtung zum Verändern des Kopiermaßstabs
JPS5639565A (en) * 1979-09-10 1981-04-15 Asahi Optical Co Ltd Variable-magnification copying machine
DE3163692D1 (en) * 1980-01-07 1984-06-28 Xerox Corp Method and apparatus for compensating for illumination defects in an optical system
JPS568168A (en) * 1980-02-25 1981-01-27 Minolta Camera Co Ltd Position adjusting device of optical system in copying machine
JPS56125773A (en) * 1980-03-06 1981-10-02 Canon Inc Light quantity corrector
US4397544A (en) * 1980-08-31 1983-08-09 Fuji Photo Optical Co., Ltd. Optical apparatus for changing magnification or reduction rates
JPS57188168A (en) * 1981-05-14 1982-11-19 Fujitsu Ltd Simple manager secretary telephone system
JPS57188068A (en) * 1981-05-15 1982-11-18 Ricoh Co Ltd Variable magnification optical system for copying machine
JPS5852659A (ja) * 1981-09-24 1983-03-28 Asahi Optical Co Ltd 拡大・縮小が可能な連続可変倍複写装置
JPS5895358A (ja) * 1981-11-30 1983-06-06 Mita Ind Co Ltd 可変倍率静電複写方法
JPS58182627A (ja) * 1982-04-20 1983-10-25 Mita Ind Co Ltd 静電複写機
US4441805A (en) * 1982-06-28 1984-04-10 International Business Machines Corporation Means for positioning optical components for a variable magnification/reduction copier optics system

Also Published As

Publication number Publication date
EP0110345A3 (en) 1985-05-15
JPH0473571B2 (de) 1992-11-24
EP0245880A3 (en) 1988-02-10
EP0110345A2 (de) 1984-06-13
JPS5999429A (ja) 1984-06-08
DE3382703T2 (de) 1994-03-03
US4582418A (en) 1986-04-15
EP0245880A2 (de) 1987-11-19
EP0245880B1 (de) 1993-07-07
DE3382703D1 (de) 1993-08-12
EP0110345B1 (de) 1989-11-23

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee