GB1229677A - - Google Patents

Info

Publication number
GB1229677A
GB1229677A GB1229677DA GB1229677A GB 1229677 A GB1229677 A GB 1229677A GB 1229677D A GB1229677D A GB 1229677DA GB 1229677 A GB1229677 A GB 1229677A
Authority
GB
United Kingdom
Prior art keywords
area
cells
photo
output
density
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
Other languages
English (en)
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 filed Critical
Publication of GB1229677A publication Critical patent/GB1229677A/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
    • G03B27/00—Photographic printing apparatus
    • G03B27/72—Controlling or varying light intensity, spectral composition, or exposure time in photographic printing apparatus
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J1/00—Photometry, e.g. photographic exposure meter
    • G01J1/42—Photometry, e.g. photographic exposure meter using electric radiation detectors

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • General Physics & Mathematics (AREA)
  • Control Of Exposure In Printing And Copying (AREA)
GB1229677D 1967-05-22 1968-05-17 Expired GB1229677A (https=)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US64013667A 1967-05-22 1967-05-22

Publications (1)

Publication Number Publication Date
GB1229677A true GB1229677A (https=) 1971-04-28

Family

ID=24566984

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1229677D Expired GB1229677A (https=) 1967-05-22 1968-05-17

Country Status (4)

Country Link
CH (1) CH464691A (https=)
DE (1) DE1772475B1 (https=)
FR (1) FR1571646A (https=)
GB (1) GB1229677A (https=)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA931408A (en) * 1970-08-27 1973-08-07 M. Waz Edward Method and apparatus for sensing radiation derived from information bearing media
DE3220203C2 (de) * 1982-05-28 1986-03-06 Agfa-Gevaert Ag, 5090 Leverkusen Verfahren zur Sortierung von fotografischen Kopiervorlagen in verschiedenen Motivgruppen und zur Festlegung von Dichtekorrekturwerten

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3188475A (en) * 1961-11-24 1965-06-08 Raytheon Co Multiple zone photoelectric device

Also Published As

Publication number Publication date
FR1571646A (https=) 1969-06-20
CH464691A (fr) 1968-10-31
DE1772475B1 (de) 1970-09-24

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Legal Events

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