GB410076A - Improvements in the production of photographic records of sound - Google Patents

Improvements in the production of photographic records of sound

Info

Publication number
GB410076A
GB410076A GB2166932A GB2166932A GB410076A GB 410076 A GB410076 A GB 410076A GB 2166932 A GB2166932 A GB 2166932A GB 2166932 A GB2166932 A GB 2166932A GB 410076 A GB410076 A GB 410076A
Authority
GB
United Kingdom
Prior art keywords
sound
record
photographic
aug
developer
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
GB2166932A
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.)
IG Farbenindustrie AG
Original Assignee
IG Farbenindustrie AG
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 IG Farbenindustrie AG filed Critical IG Farbenindustrie AG
Priority to GB2166932A priority Critical patent/GB410076A/en
Publication of GB410076A publication Critical patent/GB410076A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C5/00—Photographic processes or agents therefor; Regeneration of such processing agents
    • G03C5/12—Cinematrographic processes of taking pictures or printing
    • G03C5/14—Cinematrographic processes of taking pictures or printing combined with sound-recording

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)

Abstract

410,076. Photographic sound-records. I. G. FARBENINDUSTRIE AKT.-GES., Frankfort-on-Main, Germany. Aug. 2, 1932, No. 21669. Void [Abridged as open to inspection under Sect. 91 of the Acts, Aug. 3, 1932]. Drawings to Specification. [Class 40 (ii).] A photographic negative sound-record of the variable density type for use for direct optical reproduction of sound therefrom is made on a film which tends to produce an image of strong contrast and is developed by a developer, for example a so-called title developer, which produces a negative having a density curve of strong contrast. The resulting record has a transparency exposure characteristic represented by a straight line. When the record is made on a combined sound and picture film the sound record is provided with a protecting layer during further treatment of the picture this layer is removed before fixing.
GB2166932A 1932-08-02 1932-08-02 Improvements in the production of photographic records of sound Expired GB410076A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2166932A GB410076A (en) 1932-08-02 1932-08-02 Improvements in the production of photographic records of sound

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2166932A GB410076A (en) 1932-08-02 1932-08-02 Improvements in the production of photographic records of sound

Publications (1)

Publication Number Publication Date
GB410076A true GB410076A (en) 1934-05-10

Family

ID=10166821

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2166932A Expired GB410076A (en) 1932-08-02 1932-08-02 Improvements in the production of photographic records of sound

Country Status (1)

Country Link
GB (1) GB410076A (en)

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