GB2078986B - Method and apparatus for controlling exposure time for photosensitive materials in consideration of reciprocity law failure - Google Patents

Method and apparatus for controlling exposure time for photosensitive materials in consideration of reciprocity law failure

Info

Publication number
GB2078986B
GB2078986B GB8119514A GB8119514A GB2078986B GB 2078986 B GB2078986 B GB 2078986B GB 8119514 A GB8119514 A GB 8119514A GB 8119514 A GB8119514 A GB 8119514A GB 2078986 B GB2078986 B GB 2078986B
Authority
GB
United Kingdom
Prior art keywords
consideration
exposure time
photosensitive materials
controlling exposure
reciprocity law
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
GB8119514A
Other versions
GB2078986A (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.)
Dainippon Screen Manufacturing Co Ltd
Original Assignee
Dainippon Screen Manufacturing 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
Priority claimed from JP8644280A external-priority patent/JPS5713443A/en
Priority claimed from JP16559980A external-priority patent/JPS5789748A/en
Application filed by Dainippon Screen Manufacturing Co Ltd filed Critical Dainippon Screen Manufacturing Co Ltd
Publication of GB2078986A publication Critical patent/GB2078986A/en
Application granted granted Critical
Publication of GB2078986B publication Critical patent/GB2078986B/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B7/00—Control of exposure by setting shutters, diaphragms or filters, separately or conjointly
    • G03B7/08—Control effected solely on the basis of the response, to the intensity of the light received by the camera, of a built-in light-sensitive device
    • G03B7/091—Digital circuits
    • G03B7/097—Digital circuits for control of both exposure time and aperture

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Control Of Exposure In Printing And Copying (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)
  • Exposure Control For Cameras (AREA)
GB8119514A 1980-06-27 1981-06-24 Method and apparatus for controlling exposure time for photosensitive materials in consideration of reciprocity law failure Expired GB2078986B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP8644280A JPS5713443A (en) 1980-06-27 1980-06-27 Controlling method for exposure time of photoengraving camera
JP16559980A JPS5789748A (en) 1980-11-25 1980-11-25 Exposure time controlling method of picture copying device

Publications (2)

Publication Number Publication Date
GB2078986A GB2078986A (en) 1982-01-13
GB2078986B true GB2078986B (en) 1984-06-27

Family

ID=26427562

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8119514A Expired GB2078986B (en) 1980-06-27 1981-06-24 Method and apparatus for controlling exposure time for photosensitive materials in consideration of reciprocity law failure

Country Status (6)

Country Link
DE (1) DE3124693A1 (en)
DK (1) DK279981A (en)
ES (1) ES503365A0 (en)
FR (1) FR2485757A1 (en)
GB (1) GB2078986B (en)
IT (1) IT1171341B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5756836A (en) * 1980-09-22 1982-04-05 Dainippon Screen Mfg Co Ltd Method and device for correcting anti-reciprocity law in case of color reproduction
DE3603249A1 (en) * 1986-02-03 1987-08-06 Hauck Gmbh Exposure timer for photographic materials

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1046497B (en) * 1957-06-19 1958-12-11 Agfa Ag Timing device for photographic copiers
DE1497371C3 (en) * 1965-03-10 1974-01-10 Agfa-Gevaert Ag, 5090 Leverkusen Process for regulating the exposure time of copiers
GB1311470A (en) * 1969-11-19 1973-03-28 Littlejohn Co Ltd Sidney R Photographic reproduction cameras
SE363173B (en) * 1972-05-25 1974-01-07 Misomex Ab
DE2251334C3 (en) * 1972-10-19 1980-04-10 Eskofot A/S, Ballerup (Daenemark) Repro camera
US4168120A (en) * 1978-04-17 1979-09-18 Pako Corporation Automatic exposure corrections for photographic printer

Also Published As

Publication number Publication date
ES8300206A1 (en) 1982-10-01
DE3124693C2 (en) 1987-02-19
DK279981A (en) 1981-12-28
IT1171341B (en) 1987-06-10
FR2485757B1 (en) 1984-12-21
FR2485757A1 (en) 1981-12-31
IT8148784A0 (en) 1981-06-26
DE3124693A1 (en) 1982-02-25
ES503365A0 (en) 1982-10-01
GB2078986A (en) 1982-01-13

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Legal Events

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

Effective date: 19930624