GB2097960B - An exposure controller for a copying machine - Google Patents

An exposure controller for a copying machine

Info

Publication number
GB2097960B
GB2097960B GB8212512A GB8212512A GB2097960B GB 2097960 B GB2097960 B GB 2097960B GB 8212512 A GB8212512 A GB 8212512A GB 8212512 A GB8212512 A GB 8212512A GB 2097960 B GB2097960 B GB 2097960B
Authority
GB
United Kingdom
Prior art keywords
copying machine
exposure controller
exposure
controller
copying
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.)
Expired
Application number
GB8212512A
Other languages
English (en)
Other versions
GB2097960A (en
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
Publication of GB2097960A publication Critical patent/GB2097960A/en
Application granted granted Critical
Publication of GB2097960B publication Critical patent/GB2097960B/en
Expired 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)
  • Light Sources And Details Of Projection-Printing Devices (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)
  • Control Of Exposure In Printing And Copying (AREA)
GB8212512A 1981-04-30 1982-04-29 An exposure controller for a copying machine Expired GB2097960B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56066701A JPS57181539A (en) 1981-04-30 1981-04-30 Exposure controller for copying machine

Publications (2)

Publication Number Publication Date
GB2097960A GB2097960A (en) 1982-11-10
GB2097960B true GB2097960B (en) 1985-04-03

Family

ID=13323500

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8212512A Expired GB2097960B (en) 1981-04-30 1982-04-29 An exposure controller for a copying machine

Country Status (3)

Country Link
JP (1) JPS57181539A (enrdf_load_stackoverflow)
DE (1) DE3216245A1 (enrdf_load_stackoverflow)
GB (1) GB2097960B (enrdf_load_stackoverflow)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6425140A (en) * 1987-07-21 1989-01-27 Sharp Kk Exposing device for copying machine

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5182630A (enrdf_load_stackoverflow) * 1975-01-16 1976-07-20 Minolta Camera Kk
US4024428A (en) * 1975-05-19 1977-05-17 Optical Associates, Incorporated Radiation-sensitive control circuit for driving lamp at various power levels
JPS54153038A (en) * 1978-05-23 1979-12-01 Minolta Camera Co Ltd Automatic exposure control device of electrophoto graphic copier
JPS559546A (en) * 1978-07-06 1980-01-23 Canon Inc Device having light source for exposure
DE2926300A1 (de) * 1979-06-29 1981-01-08 Noell Gmbh Lagergestell fuer abgebrannte brennelemente aus kernkraftwerken

Also Published As

Publication number Publication date
JPS57181539A (en) 1982-11-09
DE3216245A1 (de) 1982-11-25
GB2097960A (en) 1982-11-10
DE3216245C2 (enrdf_load_stackoverflow) 1990-10-04

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee