GB395784A - Improvements in projection printing machines particularly for sound films - Google Patents

Improvements in projection printing machines particularly for sound films

Info

Publication number
GB395784A
GB395784A GB372832A GB372832A GB395784A GB 395784 A GB395784 A GB 395784A GB 372832 A GB372832 A GB 372832A GB 372832 A GB372832 A GB 372832A GB 395784 A GB395784 A GB 395784A
Authority
GB
United Kingdom
Prior art keywords
housing
microscope
printing machines
printing
projection 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
GB372832A
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.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston 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 British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Priority to GB372832A priority Critical patent/GB395784A/en
Publication of GB395784A publication Critical patent/GB395784A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor

Landscapes

  • Projection-Type Copiers In General (AREA)

Abstract

395,784. Projection-printing of soundfilms. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London, and COCKE, K. J. R., 46, Dale Street, Rugby. Feb. 8, 1932, No. 3728. [Class 40 (ii).] In a film-printing apparatus, particularly for sound-films, comprising a housing a containing a source of light, an optical system l, a viewing microscope b, and film gates e, f located between the optical system and the housing and microscope respectively, the housing and microscope are pivotally mounted and carry electric contacts g so that the printing light is extinguished if either is moved out of its operative position. The housing may also be provided with a shutter adapted 'to close if the housing is moved from operative position.
GB372832A 1932-02-08 1932-02-08 Improvements in projection printing machines particularly for sound films Expired GB395784A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB372832A GB395784A (en) 1932-02-08 1932-02-08 Improvements in projection printing machines particularly for sound films

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB372832A GB395784A (en) 1932-02-08 1932-02-08 Improvements in projection printing machines particularly for sound films

Publications (1)

Publication Number Publication Date
GB395784A true GB395784A (en) 1933-07-27

Family

ID=9763821

Family Applications (1)

Application Number Title Priority Date Filing Date
GB372832A Expired GB395784A (en) 1932-02-08 1932-02-08 Improvements in projection printing machines particularly for sound films

Country Status (1)

Country Link
GB (1) GB395784A (en)

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