FR1177516A - Improvements to photographic printing devices - Google Patents

Improvements to photographic printing devices

Info

Publication number
FR1177516A
FR1177516A FR1177516DA FR1177516A FR 1177516 A FR1177516 A FR 1177516A FR 1177516D A FR1177516D A FR 1177516DA FR 1177516 A FR1177516 A FR 1177516A
Authority
FR
France
Prior art keywords
printing devices
photographic printing
photographic
devices
printing
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
French (fr)
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.)
Cinema Television Ltd
Original Assignee
Cinema Television 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 Cinema Television Ltd filed Critical Cinema Television Ltd
Application granted granted Critical
Publication of FR1177516A publication Critical patent/FR1177516A/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
    • G03B27/725—Optical projection devices wherein the contrast is controlled electrically (e.g. cathode ray tube masking)

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • General Physics & Mathematics (AREA)
FR1177516D 1956-06-29 1957-06-25 Improvements to photographic printing devices Expired FR1177516A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1177516X 1956-06-29

Publications (1)

Publication Number Publication Date
FR1177516A true FR1177516A (en) 1959-04-27

Family

ID=10879990

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1177516D Expired FR1177516A (en) 1956-06-29 1957-06-25 Improvements to photographic printing devices

Country Status (1)

Country Link
FR (1) FR1177516A (en)

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