JPH0319546B2 - - Google Patents

Info

Publication number
JPH0319546B2
JPH0319546B2 JP55037841A JP3784180A JPH0319546B2 JP H0319546 B2 JPH0319546 B2 JP H0319546B2 JP 55037841 A JP55037841 A JP 55037841A JP 3784180 A JP3784180 A JP 3784180A JP H0319546 B2 JPH0319546 B2 JP H0319546B2
Authority
JP
Japan
Prior art keywords
lens system
zoom lens
magnification
copying
moving
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 - Lifetime
Application number
JP55037841A
Other languages
English (en)
Japanese (ja)
Other versions
JPS56133756A (en
Inventor
Ryota Ogawa
Ikuo Negoro
Hisao Iwanade
Yasunori Arai
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.)
Pentax Corp
Original Assignee
Asahi Kogaku Kogyo 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 Asahi Kogaku Kogyo Co Ltd filed Critical Asahi Kogaku Kogyo Co Ltd
Priority to JP3784180A priority Critical patent/JPS56133756A/ja
Priority to US06/244,476 priority patent/US4420248A/en
Priority to GB8108797A priority patent/GB2073899B/en
Priority to DE19813111557 priority patent/DE3111557A1/de
Publication of JPS56133756A publication Critical patent/JPS56133756A/ja
Priority to HK341/86A priority patent/HK34186A/xx
Publication of JPH0319546B2 publication Critical patent/JPH0319546B2/ja
Granted 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
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Variable Magnification In Projection-Type Copying Machines (AREA)
  • Exposure Or Original Feeding In Electrophotography (AREA)
  • Projection-Type Copiers In General (AREA)
JP3784180A 1980-03-25 1980-03-25 Optical device for variable magnification copying capable of size enlarging and reducing Granted JPS56133756A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP3784180A JPS56133756A (en) 1980-03-25 1980-03-25 Optical device for variable magnification copying capable of size enlarging and reducing
US06/244,476 US4420248A (en) 1980-03-25 1981-03-16 Variable magnification copying device
GB8108797A GB2073899B (en) 1980-03-25 1981-03-20 Variable magnification line-by-line photocopying
DE19813111557 DE3111557A1 (de) 1980-03-25 1981-03-24 Kopiermaschine mit variabler abbildungsgroesse
HK341/86A HK34186A (en) 1980-03-25 1986-05-15 Variable magnification copying machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3784180A JPS56133756A (en) 1980-03-25 1980-03-25 Optical device for variable magnification copying capable of size enlarging and reducing

Publications (2)

Publication Number Publication Date
JPS56133756A JPS56133756A (en) 1981-10-20
JPH0319546B2 true JPH0319546B2 (en]) 1991-03-15

Family

ID=12508750

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3784180A Granted JPS56133756A (en) 1980-03-25 1980-03-25 Optical device for variable magnification copying capable of size enlarging and reducing

Country Status (5)

Country Link
US (1) US4420248A (en])
JP (1) JPS56133756A (en])
DE (1) DE3111557A1 (en])
GB (1) GB2073899B (en])
HK (1) HK34186A (en])

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3241574A1 (de) * 1981-11-11 1983-05-26 Canon K.K., Tokyo Geraet zur bilderzeugung unter veraenderbarer vergroesserung
JPS5895358A (ja) * 1981-11-30 1983-06-06 Mita Ind Co Ltd 可変倍率静電複写方法
JPS5895366A (ja) * 1981-11-30 1983-06-06 Mita Ind Co Ltd 変倍複写可能な静電複写機における光学装置
JPS58100164A (ja) * 1981-12-10 1983-06-14 Konishiroku Photo Ind Co Ltd 可変倍率型複写機
US4543643A (en) * 1982-05-28 1985-09-24 Minolta Camera Copying magnification setting device for an electrophotographic copying apparatus
JPS58195232U (ja) * 1982-06-22 1983-12-26 旭光学工業株式会社 可変倍複写装置における半速ミラ−の衝突防止機構
JPS597442U (ja) * 1982-07-02 1984-01-18 旭光学工業株式会社 複写機の変倍光学装置
JPS597441U (ja) * 1982-07-02 1984-01-18 旭光学工業株式会社 複写機の変倍光学装置
JPS5919936A (ja) * 1982-07-26 1984-02-01 Fuji Xerox Co Ltd 複写機用光学系制御装置
JPS5933442A (ja) * 1982-08-19 1984-02-23 Toshiba Corp 画像形成装置
JPS5964810A (ja) * 1982-10-05 1984-04-12 Canon Inc 変倍投影装置
JPS59125718A (ja) * 1983-01-06 1984-07-20 Canon Inc 複写装置
JPS6022122A (ja) * 1983-07-18 1985-02-04 Casio Comput Co Ltd 複写装置
JPS6046540A (ja) * 1983-08-24 1985-03-13 Asahi Optical Co Ltd 変倍可能な複写機の合焦点合倍率装置
JPS60218636A (ja) * 1984-04-16 1985-11-01 Asahi Optical Co Ltd ズ−ムレンズを用いた小型変倍複写機の焦点位置調整装置
JPH0656471B2 (ja) * 1984-05-18 1994-07-27 コニカ株式会社 露光装置
US5313250A (en) * 1988-08-01 1994-05-17 Asahi Kogaku Kogyo Kabushiki Kaisha Movement controlling device
US5367406A (en) * 1990-10-16 1994-11-22 Asahi Kogaku Kogyo Kabushiki Kaisha Optical device with inherent focusing error correction
US5291241A (en) * 1990-10-16 1994-03-01 Asahi Kogaku Kogyo Kabushiki Kaisha Optical device
JPH0511160U (ja) * 1991-07-25 1993-02-12 旭光学工業株式会社 コロナチヤージヤのグリツト位置決め構造
JP2899154B2 (ja) * 1991-11-08 1999-06-02 キヤノン株式会社 複写装置
US5526095A (en) * 1992-08-20 1996-06-11 Asahi Kogaku Kogyo Kabushiki Kaisha Image reading apparatus having variable power optical system including first and second fixed focus lens groups
US5946532A (en) * 1995-04-20 1999-08-31 Asahi Kogaku Kogyo Kabushiki Kaisha Variable magnification optical system with light shielding mechanism
JPH08340474A (ja) * 1995-06-12 1996-12-24 Asahi Optical Co Ltd カメラの像倍率調整装置

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2704484A (en) * 1955-03-22 Autofocusing device
US1498472A (en) * 1922-01-17 1924-06-17 William T Mohler Photographic enlarging apparatus
US3355236A (en) * 1964-01-02 1967-11-28 Xerox Corp Automatic optical control apparatus
JPS5240863B2 (en]) * 1972-12-28 1977-10-14
JPS5241860Y2 (en]) * 1973-02-27 1977-09-22
DE2512424C2 (de) * 1975-03-21 1982-01-14 Jos. Schneider Gmbh & Co, Optische Werke, 6550 Bad Kreuznach Verstelleinrichtung für photographische, kinematographische oder reprographische Objektive
US4095880A (en) * 1975-06-27 1978-06-20 Xerox Corporation Extended range variable magnification reproduction machine
US4077710A (en) * 1976-02-03 1978-03-07 Eastman Kodak Company Lens shift mechanism
GB1525218A (en) * 1976-09-07 1978-09-20 Ibm Electrophotographic copying machine
US4120578A (en) * 1976-09-07 1978-10-17 International Business Machines Corporation Continuously variable reduction scanning optics drive
JPS5397418A (en) * 1977-02-07 1978-08-25 Dainippon Screen Mfg Method of copying machine camera*s automatic focusing and its equipment
NL7806343A (nl) * 1977-06-15 1978-12-19 Saunders Louie George Kolomvormige konstruktie en werkwijze voor de vervaar- diging daarvan.
US4142793A (en) * 1977-12-09 1979-03-06 Minnesota Mining And Manufacturing Company Variable speed drive apparatus for the scanning system of a copy machine
JPS54122132A (en) * 1978-03-16 1979-09-21 Ricoh Co Ltd Slit exposure method for photreceptor in copier

Also Published As

Publication number Publication date
DE3111557A1 (de) 1982-04-22
DE3111557C2 (en]) 1987-08-27
JPS56133756A (en) 1981-10-20
GB2073899B (en) 1984-08-08
GB2073899A (en) 1981-10-21
HK34186A (en) 1986-05-23
US4420248A (en) 1983-12-13

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