JPS5760323A - Exposure controlling device for copying equipment - Google Patents

Exposure controlling device for copying equipment

Info

Publication number
JPS5760323A
JPS5760323A JP55134838A JP13483880A JPS5760323A JP S5760323 A JPS5760323 A JP S5760323A JP 55134838 A JP55134838 A JP 55134838A JP 13483880 A JP13483880 A JP 13483880A JP S5760323 A JPS5760323 A JP S5760323A
Authority
JP
Japan
Prior art keywords
exposure
output
photoreceptor
light
formula
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
JP55134838A
Other languages
English (en)
Japanese (ja)
Inventor
Keiji Nakatani
Shiro Chokai
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.)
Minolta Co Ltd
Original Assignee
Minolta 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 Minolta Co Ltd filed Critical Minolta Co Ltd
Priority to JP55134838A priority Critical patent/JPS5760323A/ja
Priority to US06/300,284 priority patent/US4433906A/en
Priority to DE19813138231 priority patent/DE3138231A1/de
Publication of JPS5760323A publication Critical patent/JPS5760323A/ja
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
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/10—Projectors with built-in or built-on screen
    • G03B21/11—Projectors with built-in or built-on screen for microfilm reading

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Control Of Exposure In Printing And Copying (AREA)
  • Variable Magnification In Projection-Type Copying Machines (AREA)
  • Projection-Type Copiers In General (AREA)
  • Exposure Or Original Feeding In Electrophotography (AREA)
  • Control Or Security For Electrophotography (AREA)
JP55134838A 1980-09-26 1980-09-26 Exposure controlling device for copying equipment Pending JPS5760323A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP55134838A JPS5760323A (en) 1980-09-26 1980-09-26 Exposure controlling device for copying equipment
US06/300,284 US4433906A (en) 1980-09-26 1981-09-08 Microfilm reader printer equipped with improved exposure amount control arrangement
DE19813138231 DE3138231A1 (de) 1980-09-26 1981-09-25 Mikrofilm-lese- und kopiergeraet mit verbesserter einrichtung zum steuern der belichtungsmenge

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55134838A JPS5760323A (en) 1980-09-26 1980-09-26 Exposure controlling device for copying equipment

Publications (1)

Publication Number Publication Date
JPS5760323A true JPS5760323A (en) 1982-04-12

Family

ID=15137639

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55134838A Pending JPS5760323A (en) 1980-09-26 1980-09-26 Exposure controlling device for copying equipment

Country Status (3)

Country Link
US (1) US4433906A (en, 2012)
JP (1) JPS5760323A (en, 2012)
DE (1) DE3138231A1 (en, 2012)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58214144A (ja) * 1982-06-08 1983-12-13 Canon Inc 変倍式複写機の原稿濃度検出装置
JPS5977433A (ja) * 1982-10-26 1984-05-02 Dainippon Screen Mfg Co Ltd 複写カメラ
JPS59136728A (ja) * 1983-01-26 1984-08-06 Canon Inc 画像形成装置
JPS59159153A (ja) * 1983-02-28 1984-09-08 Canon Inc 像再生出力装置
JPS59214840A (ja) * 1983-05-23 1984-12-04 Canon Inc 投影装置
JPS6152661A (ja) * 1984-08-22 1986-03-15 Canon Inc 画像形成装置
JPS61103169A (ja) * 1984-10-26 1986-05-21 Canon Inc 画像形成装置

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5918965A (ja) * 1982-07-23 1984-01-31 Fuji Xerox Co Ltd 複写機の露光量検出装置
US4591264A (en) * 1984-01-31 1986-05-27 Minolta Camera Kabushiki Kaisha Auto exposure control device for reader-printer
US4660968A (en) * 1985-04-09 1987-04-28 Minnesota Mining And Manufacturing Company Automatic exposure control
US4616921A (en) * 1985-04-29 1986-10-14 Eastman Kodak Company Reader-printer apparatus with an improved viewing and print mirror assembly
US4748476A (en) * 1986-06-20 1988-05-31 Noritsu Kenkyu Center Co., Ltd. Automatic scanner lens selector for use with photographic printer
US4865431A (en) * 1987-04-22 1989-09-12 Minolta Camera Kabushiki Kaisha Zoom lens system for use in an image projecting apparatus with Kohler illumination
US4965592A (en) * 1987-05-21 1990-10-23 Brother Kogyo Kabushiki Kaisha Image processing apparatus for reproducing images on projector screen and photosensitive medium
US4909615A (en) * 1987-05-29 1990-03-20 Minolta Camera Kabushiki Kaisha Zoom lens system for use in an image projecting apparatus with kohler illumination
FI88214C (fi) * 1987-12-30 1993-04-13 Educatek Oy Bildkastare
JPH01241533A (ja) * 1988-03-23 1989-09-26 Minolta Camera Co Ltd マイクロ画像処理装置
JP2870790B2 (ja) * 1989-03-17 1999-03-17 ミノルタ株式会社 マイクロリーダプリンタの照明系
JP2906543B2 (ja) * 1990-03-07 1999-06-21 ミノルタ株式会社 マイクロリーダプリンタの照明系
JP2917044B2 (ja) * 1990-05-30 1999-07-12 ミノルタ株式会社 投影装置
DE4116803A1 (de) * 1991-05-23 1992-12-10 Agfa Gevaert Ag Vorrichtung zur gleichmaessigen ausleuchtung einer projektionsflaeche
US5170208A (en) * 1991-07-31 1992-12-08 Minnesota Mining And Mannufacturing Company Automatic exposure control apparatus for a microfilm printer

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2937569A (en) 1955-09-14 1960-05-24 American Optical Corp Micro-film projector
US2995978A (en) 1958-09-26 1961-08-15 Eastman Kodak Co Photographic printer circuit
DE1209419B (de) * 1961-03-25 1966-01-20 Agfa Ag Einaeugige Spiegelreflexkamera mit eingebautem Belichtungsmesser
FR1504413A (fr) 1965-09-06 1967-12-08 Dispositif lumineux
JPS6132659B1 (en, 2012) 1966-07-30 1986-07-28 Asahi Optical Co Ltd
US3699868A (en) 1969-04-18 1972-10-24 Nippon Kogaku Kk Coupling device for exposure meter to aperture of interchangeable lens in single-lens reflex camera
GB1361392A (en) 1970-09-24 1974-07-24 Hansard C Photographic explosure controller
US3746446A (en) 1971-05-05 1973-07-17 Computervision Corp Exposure control system and method for photoplotters
US3795444A (en) 1972-10-05 1974-03-05 Eastman Kodak Co Exposure control apparatus
JPS5026546A (en, 2012) 1973-07-06 1975-03-19
CH582365A5 (en, 2012) 1975-03-24 1976-11-30 Alos Ag
US4017180A (en) 1975-08-07 1977-04-12 Adddressograph Multigraph Corporation Exposure control for copying machine
JPS6027005B2 (ja) 1976-12-29 1985-06-26 ミノルタ株式会社 変倍レンズ装置
US4153364A (en) 1977-01-28 1979-05-08 Ricoh Company, Ltd. Exposure and development control apparatus for electrostatic copying machine
US4278334A (en) 1978-12-01 1981-07-14 Minolta Camera Kabushiki Kaisha Illumination control apparatus for projection device

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58214144A (ja) * 1982-06-08 1983-12-13 Canon Inc 変倍式複写機の原稿濃度検出装置
JPS5977433A (ja) * 1982-10-26 1984-05-02 Dainippon Screen Mfg Co Ltd 複写カメラ
JPS59136728A (ja) * 1983-01-26 1984-08-06 Canon Inc 画像形成装置
JPS59159153A (ja) * 1983-02-28 1984-09-08 Canon Inc 像再生出力装置
JPS59214840A (ja) * 1983-05-23 1984-12-04 Canon Inc 投影装置
JPS6152661A (ja) * 1984-08-22 1986-03-15 Canon Inc 画像形成装置
JPS61103169A (ja) * 1984-10-26 1986-05-21 Canon Inc 画像形成装置

Also Published As

Publication number Publication date
DE3138231C2 (en, 2012) 1987-11-19
US4433906A (en) 1984-02-28
DE3138231A1 (de) 1982-08-05

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