JPS5611466A - Electrophotographic copier using belt photoreceptor - Google Patents

Electrophotographic copier using belt photoreceptor

Info

Publication number
JPS5611466A
JPS5611466A JP8596479A JP8596479A JPS5611466A JP S5611466 A JPS5611466 A JP S5611466A JP 8596479 A JP8596479 A JP 8596479A JP 8596479 A JP8596479 A JP 8596479A JP S5611466 A JPS5611466 A JP S5611466A
Authority
JP
Japan
Prior art keywords
original
optical system
belt photoreceptor
receptor
image forming
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
JP8596479A
Other languages
Japanese (ja)
Inventor
Nobuyuki Yanagawa
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 JP8596479A priority Critical patent/JPS5611466A/en
Priority to US06/140,374 priority patent/US4474453A/en
Publication of JPS5611466A publication Critical patent/JPS5611466A/en
Pending legal-status Critical Current

Links

Landscapes

  • Developing For Electrophotography (AREA)
  • Combination Of More Than One Step In Electrophotography (AREA)
  • Control Or Security For Electrophotography (AREA)

Abstract

PURPOSE:To obtain a copy faithful to an original and to simplify copying process, by detecting an original pattern using part of a reflected light from the original face at the same time as an exposure step carried out while a belt photoreceptor stands still. CONSTITUTION:An exposing system consisting of an illuminating system and an image forming optical system is moved between belt photoreceptor 4 and original 3 while receptor 4 stands still to form the original image on receptor 4 by slit exposing. At that time, part of the reflected light from original 3 is lead to photodetectors PT1-n by an optical system other than the image forming optical system, such as convergent light transmitting body 10 to enable detection of the original face, and this detected signal permits density, size, or the like of original 3 to be decided and to be stored in a memory, thus developing to be made by adequately controlling development bias voltage in accordance with the original density data stored.
JP8596479A 1979-04-18 1979-07-09 Electrophotographic copier using belt photoreceptor Pending JPS5611466A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP8596479A JPS5611466A (en) 1979-07-09 1979-07-09 Electrophotographic copier using belt photoreceptor
US06/140,374 US4474453A (en) 1979-04-18 1980-04-14 Electrostatic copying apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8596479A JPS5611466A (en) 1979-07-09 1979-07-09 Electrophotographic copier using belt photoreceptor

Publications (1)

Publication Number Publication Date
JPS5611466A true JPS5611466A (en) 1981-02-04

Family

ID=13873412

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8596479A Pending JPS5611466A (en) 1979-04-18 1979-07-09 Electrophotographic copier using belt photoreceptor

Country Status (1)

Country Link
JP (1) JPS5611466A (en)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5942551A (en) * 1982-09-03 1984-03-09 Canon Inc Image forming device
JPS59142573A (en) * 1983-02-03 1984-08-15 Canon Inc Image forming device
JPS59228683A (en) * 1983-06-10 1984-12-22 Fuji Xerox Co Ltd Electrophotographic copying machine
JPS6010268A (en) * 1983-06-30 1985-01-19 Canon Inc Image processor
JPS6010267A (en) * 1983-06-30 1985-01-19 Canon Inc Image processor
JPS6010269A (en) * 1983-06-30 1985-01-19 Canon Inc Image processor
JPS6035751A (en) * 1983-08-06 1985-02-23 Canon Inc Image control device
JPS6046576A (en) * 1983-08-25 1985-03-13 Canon Inc Image forming device
JPS616636A (en) * 1984-06-21 1986-01-13 Canon Inc Image processor
JPS616672A (en) * 1984-06-21 1986-01-13 Canon Inc Image processor
JPS6135439A (en) * 1984-07-27 1986-02-19 Konishiroku Photo Ind Co Ltd Electrostatic recording device
JPS6330873A (en) * 1986-07-25 1988-02-09 Canon Inc Information recorder

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5942551A (en) * 1982-09-03 1984-03-09 Canon Inc Image forming device
JPS59142573A (en) * 1983-02-03 1984-08-15 Canon Inc Image forming device
JPH0610722B2 (en) * 1983-02-03 1994-02-09 キヤノン株式会社 Reader printer
JPS59228683A (en) * 1983-06-10 1984-12-22 Fuji Xerox Co Ltd Electrophotographic copying machine
JPS619631B2 (en) * 1983-06-10 1986-03-25 Fuji Xerox Co Ltd
JPS6010268A (en) * 1983-06-30 1985-01-19 Canon Inc Image processor
JPS6010269A (en) * 1983-06-30 1985-01-19 Canon Inc Image processor
JPS6010267A (en) * 1983-06-30 1985-01-19 Canon Inc Image processor
JPH0555868B2 (en) * 1983-06-30 1993-08-18 Canon Kk
JPH0555867B2 (en) * 1983-06-30 1993-08-18 Canon Kk
JPH0532748B2 (en) * 1983-06-30 1993-05-17 Canon Kk
JPS6035751A (en) * 1983-08-06 1985-02-23 Canon Inc Image control device
JPH0555872B2 (en) * 1983-08-06 1993-08-18 Canon Kk
JPS6046576A (en) * 1983-08-25 1985-03-13 Canon Inc Image forming device
JPS616636A (en) * 1984-06-21 1986-01-13 Canon Inc Image processor
JPS616672A (en) * 1984-06-21 1986-01-13 Canon Inc Image processor
JPS6135439A (en) * 1984-07-27 1986-02-19 Konishiroku Photo Ind Co Ltd Electrostatic recording device
JPS6330873A (en) * 1986-07-25 1988-02-09 Canon Inc Information recorder

Similar Documents

Publication Publication Date Title
JPS5611466A (en) Electrophotographic copier using belt photoreceptor
JPS57200054A (en) Picture forming device
JPS5486347A (en) Development stabilizing system
US5214474A (en) Copying apparatus
DE3463859D1 (en) Automatic developing bias control device
JPS5776562A (en) Electrophotographic cpier
JPS57195256A (en) Controlling method for toner density
JPS56161554A (en) Control device for electronic copying machine
JPS56140361A (en) Electrophotographic copier
JPS5642242A (en) Electrophotographic method
JPS5633661A (en) Copying machine
JPS58106573A (en) Automatic exposing device of electronic copying machine
JPS569760A (en) Copying apparatus
JPS56161556A (en) Method for controlling electrophotographic copying machine
JPS5776564A (en) Control system of copy surface image
JP3060534B2 (en) Image quality detection apparatus and detection method for electrophotographic apparatus
JPS5695271A (en) Electrophotographic method
JPS57104157A (en) Variable magnitude copying machine
JPS53103736A (en) Auto-bias development for xerographic copying machine
JPS57186769A (en) Latent image forming method
JPS55124157A (en) Electrostatic copying method
JPS56128977A (en) Control method for copying density
JPS5557868A (en) Exposure control method of electrophotographic copier
JPS5461535A (en) Image density control device
JPS62151836A (en) Image density controller