CA1075941A - Cadres presseurs pour projecteurs cinematographiques - Google Patents

Cadres presseurs pour projecteurs cinematographiques

Info

Publication number
CA1075941A
CA1075941A CA273,127A CA273127A CA1075941A CA 1075941 A CA1075941 A CA 1075941A CA 273127 A CA273127 A CA 273127A CA 1075941 A CA1075941 A CA 1075941A
Authority
CA
Canada
Prior art keywords
film
aperture
plate
transparent member
pressure plate
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
CA273,127A
Other languages
English (en)
Inventor
Michael J. Edwards
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.)
RFD Systems Engineering Ltd
Original Assignee
RFD Systems Engineering 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 RFD Systems Engineering Ltd filed Critical RFD Systems Engineering Ltd
Application granted granted Critical
Publication of CA1075941A publication Critical patent/CA1075941A/fr
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
    • G03B1/00—Film strip handling
    • G03B1/42—Guiding, framing, or constraining film in desired position relative to lens system
    • G03B1/48—Gates or pressure devices, e.g. plate

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Projection Apparatus (AREA)
CA273,127A 1976-03-04 1977-03-03 Cadres presseurs pour projecteurs cinematographiques Expired CA1075941A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB876076A GB1577736A (en) 1976-03-04 1976-03-04 Pressure plates for cinematograph projectors

Publications (1)

Publication Number Publication Date
CA1075941A true CA1075941A (fr) 1980-04-22

Family

ID=9858755

Family Applications (1)

Application Number Title Priority Date Filing Date
CA273,127A Expired CA1075941A (fr) 1976-03-04 1977-03-03 Cadres presseurs pour projecteurs cinematographiques

Country Status (3)

Country Link
CA (1) CA1075941A (fr)
FR (1) FR2343270A1 (fr)
GB (1) GB1577736A (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4129072A1 (de) * 1991-05-29 1992-12-03 Theimer Siegfried Grafische Vorrichtung zur durchlaufbelichtung von kopierpartnern

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB594056A (en) * 1945-06-25 1947-10-31 George Herbert Lanchester Improvements in or relating to optical projectors for images carried on a film strip
US2457913A (en) * 1944-05-22 1949-01-04 Otto R Nemeth Film gate

Also Published As

Publication number Publication date
GB1577736A (en) 1980-10-29
FR2343270A1 (fr) 1977-09-30

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Legal Events

Date Code Title Description
MKEX Expiry