JPS5757701B2 - - Google Patents

Info

Publication number
JPS5757701B2
JPS5757701B2 JP50105527A JP10552775A JPS5757701B2 JP S5757701 B2 JPS5757701 B2 JP S5757701B2 JP 50105527 A JP50105527 A JP 50105527A JP 10552775 A JP10552775 A JP 10552775A JP S5757701 B2 JPS5757701 B2 JP S5757701B2
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
JP50105527A
Other languages
Japanese (ja)
Other versions
JPS5229225A (en
Inventor
Kenji Kojima
Toyoo Okamoto
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 JP50105527A priority Critical patent/JPS5229225A/ja
Priority to US05/717,890 priority patent/US4095884A/en
Priority to DE19762638698 priority patent/DE2638698A1/de
Publication of JPS5229225A publication Critical patent/JPS5229225A/ja
Publication of JPS5757701B2 publication Critical patent/JPS5757701B2/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
    • G03G15/043—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 means for controlling illumination or exposure
    • G03G15/0435—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 means for controlling illumination or exposure by introducing an optical element in the optical path, e.g. a filter
    • 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
    • G03G15/043—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 means for controlling illumination or exposure

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Control Or Security For Electrophotography (AREA)
  • Exposure Or Original Feeding In Electrophotography (AREA)
  • Optical Systems Of Projection Type Copiers (AREA)
  • Control Of Exposure In Printing And Copying (AREA)
JP50105527A 1975-08-29 1975-08-29 Exposure adjustable device of an automatic return type Granted JPS5229225A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP50105527A JPS5229225A (en) 1975-08-29 1975-08-29 Exposure adjustable device of an automatic return type
US05/717,890 US4095884A (en) 1975-08-29 1976-08-25 Exposure controlling apparatus for electrophotographic copying machine
DE19762638698 DE2638698A1 (de) 1975-08-29 1976-08-27 Belichtungssteuereinrichtung fuer ein elektrophotographisches kopiergeraet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP50105527A JPS5229225A (en) 1975-08-29 1975-08-29 Exposure adjustable device of an automatic return type

Publications (2)

Publication Number Publication Date
JPS5229225A JPS5229225A (en) 1977-03-04
JPS5757701B2 true JPS5757701B2 (en, 2012) 1982-12-06

Family

ID=14410050

Family Applications (1)

Application Number Title Priority Date Filing Date
JP50105527A Granted JPS5229225A (en) 1975-08-29 1975-08-29 Exposure adjustable device of an automatic return type

Country Status (3)

Country Link
US (1) US4095884A (en, 2012)
JP (1) JPS5229225A (en, 2012)
DE (1) DE2638698A1 (en, 2012)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02103303U (en, 2012) * 1989-02-03 1990-08-16

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2839076C3 (de) * 1977-09-09 1998-01-29 Canon Kk Kopiergerät
JPS5443026A (en) * 1977-09-12 1979-04-05 Olympus Optical Co Ltd Method and apparatus foe electrophotography
JPS554454U (en, 2012) * 1978-06-23 1980-01-12
JPS5621165A (en) * 1979-07-28 1981-02-27 Mita Ind Co Ltd Exposure adjusting device of electrostatic type copying machine
JPS5627177A (en) * 1979-08-14 1981-03-16 Toshiba Corp Copying unit
JPS5958450A (ja) * 1982-09-28 1984-04-04 Konishiroku Photo Ind Co Ltd 複写機
JPS6063568A (ja) * 1984-07-16 1985-04-11 Canon Inc 画像処理装置
JPS6134561A (ja) * 1984-09-10 1986-02-18 Canon Inc 画像倍率変換装置
JPS6134560A (ja) * 1984-09-10 1986-02-18 Canon Inc 画像倍率変換装置
JP2816690B2 (ja) * 1988-12-19 1998-10-27 旭光学工業株式会社 複写機の光量補正装置

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2149404B2 (de) * 1971-10-04 1976-09-30 Hoechst Ag, 6000 Frankfurt Belichtungseinrichtung fuer elektrophotographische reproduktionsgeraete
US3731611A (en) * 1972-02-11 1973-05-08 Copystatics Manuf Corp Exposure control system for reproduction devices
US4003652A (en) * 1975-02-25 1977-01-18 F & B/Ceco Industries, Inc. Shutter-opening presetting mechanism for motion picture copying apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02103303U (en, 2012) * 1989-02-03 1990-08-16

Also Published As

Publication number Publication date
US4095884A (en) 1978-06-20
JPS5229225A (en) 1977-03-04
DE2638698A1 (de) 1977-04-28

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