JPS5433037A - Electro photographic device - Google Patents

Electro photographic device

Info

Publication number
JPS5433037A
JPS5433037A JP9904777A JP9904777A JPS5433037A JP S5433037 A JPS5433037 A JP S5433037A JP 9904777 A JP9904777 A JP 9904777A JP 9904777 A JP9904777 A JP 9904777A JP S5433037 A JPS5433037 A JP S5433037A
Authority
JP
Japan
Prior art keywords
photographic device
density
electro photographic
photo
output signal
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
JP9904777A
Other languages
Japanese (ja)
Inventor
Koji Sakamoto
Susumu Tatsumi
Tsutomu Imai
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 JP9904777A priority Critical patent/JPS5433037A/en
Publication of JPS5433037A publication Critical patent/JPS5433037A/en
Pending legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE:To automatically adjust the density of copied image measuring the density of an original document with an output signal of plural detecting elements of light amount which have detected part of photo-image taken out from the optical path of the exposure system on the way.
JP9904777A 1977-08-18 1977-08-18 Electro photographic device Pending JPS5433037A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9904777A JPS5433037A (en) 1977-08-18 1977-08-18 Electro photographic device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9904777A JPS5433037A (en) 1977-08-18 1977-08-18 Electro photographic device

Publications (1)

Publication Number Publication Date
JPS5433037A true JPS5433037A (en) 1979-03-10

Family

ID=14236614

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9904777A Pending JPS5433037A (en) 1977-08-18 1977-08-18 Electro photographic device

Country Status (1)

Country Link
JP (1) JPS5433037A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0021363A1 (en) * 1979-06-29 1981-01-07 Agfa-Gevaert AG Process for controlling the exposure of a microfilm viewing and reproducing device, and such a device for carrying out the process
JPS57500353A (en) * 1980-04-04 1982-02-25
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

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4827851B1 (en) * 1968-12-10 1973-08-27

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4827851B1 (en) * 1968-12-10 1973-08-27

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0021363A1 (en) * 1979-06-29 1981-01-07 Agfa-Gevaert AG Process for controlling the exposure of a microfilm viewing and reproducing device, and such a device for carrying out the process
JPS57500353A (en) * 1980-04-04 1982-02-25
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
JPH0532748B2 (en) * 1983-06-30 1993-05-17 Canon Kk
JPH0555867B2 (en) * 1983-06-30 1993-08-18 Canon Kk
JPH0555868B2 (en) * 1983-06-30 1993-08-18 Canon Kk

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