JPS5557868A - Exposure control method of electrophotographic copier - Google Patents

Exposure control method of electrophotographic copier

Info

Publication number
JPS5557868A
JPS5557868A JP13096078A JP13096078A JPS5557868A JP S5557868 A JPS5557868 A JP S5557868A JP 13096078 A JP13096078 A JP 13096078A JP 13096078 A JP13096078 A JP 13096078A JP S5557868 A JPS5557868 A JP S5557868A
Authority
JP
Japan
Prior art keywords
exposure
unit
data
signal
controlling
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
JP13096078A
Other languages
Japanese (ja)
Inventor
Shigeru Sadamatsu
Kozo Oka
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 JP13096078A priority Critical patent/JPS5557868A/en
Publication of JPS5557868A publication Critical patent/JPS5557868A/en
Pending legal-status Critical Current

Links

Landscapes

  • Exposure Or Original Feeding In Electrophotography (AREA)
  • Control Or Security For Electrophotography (AREA)

Abstract

PURPOSE:To enable the image density of a photoreceptor whose sensitivity changes with reiterative uses to be made constant by auromatically controlling exposure. CONSTITUTION:When a counter unit 1 detects that copying of one sheet has ended, it counts the number of already copied sheets up to then, converts this to a signal and supplies said signal to an input unit 2. Next, when the output of the unit 2 is inputted to a central processing unit 4, the unit 4 performs operation and processing based on the fixed processing program and data having been stored in a memory circuit 3, calculates the next exposure and sends said data to an exposure device 6. Next, the exposure device 6 operates an iris or the like based on said data, thereby controlling the exposure. In this way, the images of always constant density may be obtained.
JP13096078A 1978-10-24 1978-10-24 Exposure control method of electrophotographic copier Pending JPS5557868A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13096078A JPS5557868A (en) 1978-10-24 1978-10-24 Exposure control method of electrophotographic copier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13096078A JPS5557868A (en) 1978-10-24 1978-10-24 Exposure control method of electrophotographic copier

Publications (1)

Publication Number Publication Date
JPS5557868A true JPS5557868A (en) 1980-04-30

Family

ID=15046647

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13096078A Pending JPS5557868A (en) 1978-10-24 1978-10-24 Exposure control method of electrophotographic copier

Country Status (1)

Country Link
JP (1) JPS5557868A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61100773A (en) * 1984-10-24 1986-05-19 Tokyo Electric Co Ltd electrophotographic equipment
JPS61173268A (en) * 1985-01-28 1986-08-04 Tokyo Electric Co Ltd Electrophotographic device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61100773A (en) * 1984-10-24 1986-05-19 Tokyo Electric Co Ltd electrophotographic equipment
JPS61173268A (en) * 1985-01-28 1986-08-04 Tokyo Electric Co Ltd Electrophotographic device

Similar Documents

Publication Publication Date Title
JPS5436725A (en) Zerographic copying method
JPS5337025A (en) Stabilizing method for electrostatic latent
JPS57200054A (en) Picture forming device
JPS5611466A (en) Electrophotographic copier using belt photoreceptor
JPS5557868A (en) Exposure control method of electrophotographic copier
JPS57151953A (en) Controlling method for development bias voltage of copying machine
ATE27375T1 (en) DEVICE FOR AUTOMATIC REGULATION OF DEVELOPMENT POTENTIAL.
JPS55101959A (en) Image forming device
JPS53116158A (en) Program control device for electrophotographic copier
JPS5557869A (en) Exposure control method of electrophotographic copier
JPS54126552A (en) Toner replenishing device for developing of copying machines and others
JPS5785070A (en) Control device for copying density of electrophotographic copier
JPS5691259A (en) Image control device
JPS6137626B2 (en)
JPS5557858A (en) Transfer bias control method of electrophotographic copier
JPS53123133A (en) Electrostatic copying machine of transfer type
JPS5340526A (en) Electrophotographic copy method
GB1352412A (en) Electrographic apparatus incorporating automatic contrast control
JPS5633661A (en) Copying machine
JPS5417846A (en) Dichromatic electrophotographic copying method
JPS56122067A (en) Transcribing device of transcription-type copier
IE33099L (en) development control for photocopy machines
JPS53110846A (en) Dry type developing device of electrophotographic copier
JPS5660451A (en) Control device for image density of copying machine
JPS57196266A (en) Controlling method and device for electronic copying machine