GB449546A - Photographic recording of sound - Google Patents

Photographic recording of sound

Info

Publication number
GB449546A
GB449546A GB37154/34A GB3715434A GB449546A GB 449546 A GB449546 A GB 449546A GB 37154/34 A GB37154/34 A GB 37154/34A GB 3715434 A GB3715434 A GB 3715434A GB 449546 A GB449546 A GB 449546A
Authority
GB
United Kingdom
Prior art keywords
silver halide
dyestuff
colour
protective
dyestuffs
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
GB37154/34A
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
Publication of GB449546A publication Critical patent/GB449546A/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)
  • Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)
  • Pyridine Compounds (AREA)

Abstract

449,546. Photographic silver halide emulsions. I. G. FARBENINDUSTRIE AKT.-GES., Frankfort.on-Main, Germany. Dec. 28, 1934, No. 37154. Convention date, Jan. 13. [Class 98 (ii)] A silver halide emulsion layer for sound records is panchromatically sensitized, and is dyed. a colour varying from blue to green and corresponding to the colour of the sensitizer used. The object is to improve sensitivity, whilst maintaining good frequency reproduction. Suitable dyestuffs are specified.. For example, pinacyanol may be used to sensitize the emulsion, and when used in sufficient quantity may also serve as the protective dye. Alternatively, there may be used a mixture of sensitizing dyestuffs, at least one of which acts as a protective dyestuff; or a relatively large proportion of a suitable blue dyestuff may be added. Specification 412,309 is referred to.
GB37154/34A 1934-01-13 1934-12-28 Photographic recording of sound Expired GB449546A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE449546X 1934-01-13

Publications (1)

Publication Number Publication Date
GB449546A true GB449546A (en) 1936-06-29

Family

ID=6538289

Family Applications (1)

Application Number Title Priority Date Filing Date
GB37154/34A Expired GB449546A (en) 1934-01-13 1934-12-28 Photographic recording of sound

Country Status (1)

Country Link
GB (1) GB449546A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6713224B1 (en) 1999-04-16 2004-03-30 Eastman Kodak Company Sound recording film

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6713224B1 (en) 1999-04-16 2004-03-30 Eastman Kodak Company Sound recording film

Similar Documents

Publication Publication Date Title
US2054390A (en) Photographic bleachjng-out layers
GB506827A (en) Improvements in or relating to photographic emulsions
US2276554A (en) Photographic emulsion
GB449546A (en) Photographic recording of sound
GB1249927A (en) Photographic material having a spectrally sensitised silver halide emulsion layer and an electron-bombarded support
US2148979A (en) Color photography
GB878514A (en) Improvements in colour photographic materials
GB702200A (en) Improvements in mixed grain colour photography
GB475191A (en) Production of multi-colour photographic pictures
GB492518A (en) Process for producing fine grain photographic pictures
GB492648A (en) Improvements relating to colour photography
GB1376020A (en) Sensitizing dyes and silver halide photographic emulsions spectrally sensitized therewith
GB507009A (en) Improved photographic material for colour photography
GB547883A (en) Improvements in or relating to photographic light-sensitive material
GB552368A (en) Improvements in light sensitive photographic materials
GB488548A (en) Improved photographic sensitive material for colour photography
GB486517A (en) Improvements in the manufacture of cinematograph films having a multi-colour picturerecord and a sound record
DE670091C (en) Recording material for color films
GB627467A (en) Improvements in colour photography and sensitive materials therefor
GB523012A (en) Improvements in sensitizing photographic emulsions and manufacture of dyes therefor
GB1199326A (en) Light-Sensitive Photographic Material
GB1454327A (en) Silver halide films with controlled gradient balance
GB503077A (en) Improvements in colour photography
US2084436A (en) Photographic material
US3615636A (en) Spectrally sensitized direct positive emulsion