JPS5349436A - Picture density control method for electronic copier - Google Patents

Picture density control method for electronic copier

Info

Publication number
JPS5349436A
JPS5349436A JP12467076A JP12467076A JPS5349436A JP S5349436 A JPS5349436 A JP S5349436A JP 12467076 A JP12467076 A JP 12467076A JP 12467076 A JP12467076 A JP 12467076A JP S5349436 A JPS5349436 A JP S5349436A
Authority
JP
Japan
Prior art keywords
control method
density control
electronic copier
picture density
picture
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
JP12467076A
Other languages
Japanese (ja)
Other versions
JPS5950067B2 (en
Inventor
Mitsuo Hasebe
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 JP51124670A priority Critical patent/JPS5950067B2/en
Priority to US05/840,614 priority patent/US4176943A/en
Priority to CA289,081A priority patent/CA1103735A/en
Priority to DE2746806A priority patent/DE2746806C3/en
Publication of JPS5349436A publication Critical patent/JPS5349436A/en
Publication of JPS5950067B2 publication Critical patent/JPS5950067B2/en
Expired legal-status Critical Current

Links

Abstract

PURPOSE:To avoid greasing on the ground of an original copy due to density difference under control of the light exposure of the copy depending on the detected ground surface potential of a photo sensitive plate.
JP51124670A 1976-10-18 1976-10-18 Image density control device for electronic copying machines Expired JPS5950067B2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP51124670A JPS5950067B2 (en) 1976-10-18 1976-10-18 Image density control device for electronic copying machines
US05/840,614 US4176943A (en) 1976-10-18 1977-10-11 Electrophotographic apparatus
CA289,081A CA1103735A (en) 1976-10-18 1977-10-17 Electrophotographic apparatus with controlled exposure
DE2746806A DE2746806C3 (en) 1976-10-18 1977-10-18 Electrophotographic copier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP51124670A JPS5950067B2 (en) 1976-10-18 1976-10-18 Image density control device for electronic copying machines

Publications (2)

Publication Number Publication Date
JPS5349436A true JPS5349436A (en) 1978-05-04
JPS5950067B2 JPS5950067B2 (en) 1984-12-06

Family

ID=14891141

Family Applications (1)

Application Number Title Priority Date Filing Date
JP51124670A Expired JPS5950067B2 (en) 1976-10-18 1976-10-18 Image density control device for electronic copying machines

Country Status (1)

Country Link
JP (1) JPS5950067B2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56155961A (en) * 1980-05-07 1981-12-02 Canon Inc Exposure controller of copying machine
JPS57204061A (en) * 1981-06-11 1982-12-14 Canon Inc Picture recording controller
JPS58172654A (en) * 1982-04-02 1983-10-11 Canon Inc Control device of image recording
JPS5912456A (en) * 1982-07-13 1984-01-23 Canon Inc Picture forming device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56155961A (en) * 1980-05-07 1981-12-02 Canon Inc Exposure controller of copying machine
JPS57204061A (en) * 1981-06-11 1982-12-14 Canon Inc Picture recording controller
JPH0421868B2 (en) * 1981-06-11 1992-04-14 Canon Kk
JPS58172654A (en) * 1982-04-02 1983-10-11 Canon Inc Control device of image recording
JPS5912456A (en) * 1982-07-13 1984-01-23 Canon Inc Picture forming device

Also Published As

Publication number Publication date
JPS5950067B2 (en) 1984-12-06

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