GB368852A - Improvements in the manufacture of sound films - Google Patents

Improvements in the manufacture of sound films

Info

Publication number
GB368852A
GB368852A GB27626/31A GB2762631A GB368852A GB 368852 A GB368852 A GB 368852A GB 27626/31 A GB27626/31 A GB 27626/31A GB 2762631 A GB2762631 A GB 2762631A GB 368852 A GB368852 A GB 368852A
Authority
GB
United Kingdom
Prior art keywords
emulsion
sensitizing
films
gelatine
sept
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
GB27626/31A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB368852A publication Critical patent/GB368852A/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)
  • Exposure Of Semiconductors, Excluding Electron Or Ion Beam Exposure (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

368,852. Kinematograph films; photosensitive layers. SCHINZEL, K., 4, Beethoven Place, Troppau, Silesia, Czecho - Slovakia, Sept. 4, 1930, No. 27626/31. Convention date, Sept. 4, 1929. Divided on 369,221. [Class 98 (ii).] In making photographic sound records, films are used having a highly sensitized grainless or very finely grained emulsion, such as a Lippmann emulsion with a size of grains between À1 to À5 microns. The sensitizing may be effected bv means of ammonia and dissolved silver salts with the addition of sensitizing dyes such as eosine or pinaflavol. The emulsion is protected by a layer of gelatine, casein, dextrin, &c., permeable by the developer. Specification 369,221 is referred to. The Specification as open to inspection under Sect. 91 (3) (a) on the 5th October, 1931, refers also to the use of hydrogen peroxide and isocyanines for sensitizing the emulsion. It further states that the protecting layer of gelatine &c., or an intermediate film between the carrier and the emulsion, for preventing halation, are preferably coloured with red or other dyes that can easily be decoloured or washed out. This subject-matter does not appear in the Specification as accepted.
GB27626/31A 1929-09-04 1930-09-04 Improvements in the manufacture of sound films Expired GB368852A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE368852X 1929-09-04

Publications (1)

Publication Number Publication Date
GB368852A true GB368852A (en) 1932-03-04

Family

ID=6318140

Family Applications (1)

Application Number Title Priority Date Filing Date
GB27626/31A Expired GB368852A (en) 1929-09-04 1930-09-04 Improvements in the manufacture of sound films

Country Status (1)

Country Link
GB (1) GB368852A (en)

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