JPS57201271A - Automatic exposure controller for electrophotographic copying machine - Google Patents

Automatic exposure controller for electrophotographic copying machine

Info

Publication number
JPS57201271A
JPS57201271A JP57062914A JP6291482A JPS57201271A JP S57201271 A JPS57201271 A JP S57201271A JP 57062914 A JP57062914 A JP 57062914A JP 6291482 A JP6291482 A JP 6291482A JP S57201271 A JPS57201271 A JP S57201271A
Authority
JP
Japan
Prior art keywords
electric power
operational amplifier
exposure lamp
density
circuit
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.)
Granted
Application number
JP57062914A
Other languages
English (en)
Japanese (ja)
Other versions
JPH0326373B2 (enrdf_load_stackoverflow
Inventor
Fumitoshi Atsumi
Hideo Ito
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 JP57062914A priority Critical patent/JPS57201271A/ja
Publication of JPS57201271A publication Critical patent/JPS57201271A/ja
Publication of JPH0326373B2 publication Critical patent/JPH0326373B2/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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Exposure Or Original Feeding In Electrophotography (AREA)
  • Control Of Exposure In Printing And Copying (AREA)
  • Control Or Security For Electrophotography (AREA)
JP57062914A 1982-04-14 1982-04-14 Automatic exposure controller for electrophotographic copying machine Granted JPS57201271A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP57062914A JPS57201271A (en) 1982-04-14 1982-04-14 Automatic exposure controller for electrophotographic copying machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57062914A JPS57201271A (en) 1982-04-14 1982-04-14 Automatic exposure controller for electrophotographic copying machine

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP6194778A Division JPS54153038A (en) 1978-05-23 1978-05-23 Automatic exposure control device of electrophoto graphic copier

Publications (2)

Publication Number Publication Date
JPS57201271A true JPS57201271A (en) 1982-12-09
JPH0326373B2 JPH0326373B2 (enrdf_load_stackoverflow) 1991-04-10

Family

ID=13213993

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57062914A Granted JPS57201271A (en) 1982-04-14 1982-04-14 Automatic exposure controller for electrophotographic copying machine

Country Status (1)

Country Link
JP (1) JPS57201271A (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61189579A (ja) * 1985-02-19 1986-08-23 Sharp Corp 複写機の露光調整装置

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51113736A (en) * 1975-03-31 1976-10-07 Iwatsu Electric Co Ltd Automatic light exposure phase controller

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51113736A (en) * 1975-03-31 1976-10-07 Iwatsu Electric Co Ltd Automatic light exposure phase controller

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61189579A (ja) * 1985-02-19 1986-08-23 Sharp Corp 複写機の露光調整装置

Also Published As

Publication number Publication date
JPH0326373B2 (enrdf_load_stackoverflow) 1991-04-10

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