JPS5214422A - Automatic control method of exposure for the electrophotographic copying machine - Google Patents

Automatic control method of exposure for the electrophotographic copying machine

Info

Publication number
JPS5214422A
JPS5214422A JP50089647A JP8964775A JPS5214422A JP S5214422 A JPS5214422 A JP S5214422A JP 50089647 A JP50089647 A JP 50089647A JP 8964775 A JP8964775 A JP 8964775A JP S5214422 A JPS5214422 A JP S5214422A
Authority
JP
Japan
Prior art keywords
exposure
control method
automatic control
copying machine
electrophotographic copying
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
JP50089647A
Other languages
Japanese (ja)
Inventor
Hitoshi Nakai
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.)
Fujifilm Business Innovation Corp
Original Assignee
Fuji Xerox 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 Fuji Xerox Co Ltd filed Critical Fuji Xerox Co Ltd
Priority to JP50089647A priority Critical patent/JPS5214422A/en
Publication of JPS5214422A publication Critical patent/JPS5214422A/en
Pending legal-status Critical Current

Links

Landscapes

  • Exposure Or Original Feeding In Electrophotography (AREA)
  • Control Of Exposure In Printing And Copying (AREA)
  • Control Or Security For Electrophotography (AREA)

Abstract

PURPOSE:To obtain a good image copy at a definite exposure by controlling an iris of intensity of illumination from the comparison between an electric signal obtained from the transformation of light and a preset standard signal.
JP50089647A 1975-07-24 1975-07-24 Automatic control method of exposure for the electrophotographic copying machine Pending JPS5214422A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP50089647A JPS5214422A (en) 1975-07-24 1975-07-24 Automatic control method of exposure for the electrophotographic copying machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP50089647A JPS5214422A (en) 1975-07-24 1975-07-24 Automatic control method of exposure for the electrophotographic copying machine

Publications (1)

Publication Number Publication Date
JPS5214422A true JPS5214422A (en) 1977-02-03

Family

ID=13976548

Family Applications (1)

Application Number Title Priority Date Filing Date
JP50089647A Pending JPS5214422A (en) 1975-07-24 1975-07-24 Automatic control method of exposure for the electrophotographic copying machine

Country Status (1)

Country Link
JP (1) JPS5214422A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53124438U (en) * 1977-03-11 1978-10-03
JPS5694371A (en) * 1979-12-27 1981-07-30 Canon Inc Exposure control device
JPS59210433A (en) * 1983-05-14 1984-11-29 Sharp Corp Copying machine
JPS6187175A (en) * 1984-06-11 1986-05-02 Canon Inc Picture formation device
JPH0418849U (en) * 1990-06-06 1992-02-17

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS502014U (en) * 1973-05-02 1975-01-10

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS502014U (en) * 1973-05-02 1975-01-10

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53124438U (en) * 1977-03-11 1978-10-03
JPS5694371A (en) * 1979-12-27 1981-07-30 Canon Inc Exposure control device
JPS59210433A (en) * 1983-05-14 1984-11-29 Sharp Corp Copying machine
JPS6187175A (en) * 1984-06-11 1986-05-02 Canon Inc Picture formation device
JPS6257990B2 (en) * 1984-06-11 1987-12-03 Canon Kk
JPH0418849U (en) * 1990-06-06 1992-02-17

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