JPS5389438A - Control device for amount of exposure for electrophotographic copier - Google Patents

Control device for amount of exposure for electrophotographic copier

Info

Publication number
JPS5389438A
JPS5389438A JP417577A JP417577A JPS5389438A JP S5389438 A JPS5389438 A JP S5389438A JP 417577 A JP417577 A JP 417577A JP 417577 A JP417577 A JP 417577A JP S5389438 A JPS5389438 A JP S5389438A
Authority
JP
Japan
Prior art keywords
amount
exposure
control device
electrophotographic copier
light
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
JP417577A
Other languages
Japanese (ja)
Inventor
Michio Maeda
Mamoru Shimono
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP417577A priority Critical patent/JPS5389438A/en
Publication of JPS5389438A publication Critical patent/JPS5389438A/en
Pending legal-status Critical Current

Links

Landscapes

  • Variable Magnification In Projection-Type Copying Machines (AREA)
  • Optical Systems Of Projection Type Copiers (AREA)
  • Control Or Security For Electrophotography (AREA)
  • Exposure Or Original Feeding In Electrophotography (AREA)

Abstract

PURPOSE:To obtain a proper amount of light at the time of equal or reduced scale in a simple constitution without recourse to the operation of change by providing a corrector which corrects the amount of light of exposure at the time of reducing scale on a slit plate.
JP417577A 1977-01-18 1977-01-18 Control device for amount of exposure for electrophotographic copier Pending JPS5389438A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP417577A JPS5389438A (en) 1977-01-18 1977-01-18 Control device for amount of exposure for electrophotographic copier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP417577A JPS5389438A (en) 1977-01-18 1977-01-18 Control device for amount of exposure for electrophotographic copier

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP25962884A Division JPS60227247A (en) 1984-12-07 1984-12-07 Exposing device

Publications (1)

Publication Number Publication Date
JPS5389438A true JPS5389438A (en) 1978-08-07

Family

ID=11577371

Family Applications (1)

Application Number Title Priority Date Filing Date
JP417577A Pending JPS5389438A (en) 1977-01-18 1977-01-18 Control device for amount of exposure for electrophotographic copier

Country Status (1)

Country Link
JP (1) JPS5389438A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58214144A (en) * 1982-06-08 1983-12-13 Canon Inc Original density detector of variable power type copying machine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58214144A (en) * 1982-06-08 1983-12-13 Canon Inc Original density detector of variable power type copying machine

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