GB390509A - Improvements in or relating to optical sound records - Google Patents

Improvements in or relating to optical sound records

Info

Publication number
GB390509A
GB390509A GB27636/31A GB2763631A GB390509A GB 390509 A GB390509 A GB 390509A GB 27636/31 A GB27636/31 A GB 27636/31A GB 2763631 A GB2763631 A GB 2763631A GB 390509 A GB390509 A GB 390509A
Authority
GB
United Kingdom
Prior art keywords
film
record
oct
class
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
GB27636/31A
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 GB390509A publication Critical patent/GB390509A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
    • G03F3/00—Colour separation; Correction of tonal value

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Paints Or Removers (AREA)

Abstract

390,509. Optical sound-records. VOGT, H., 17, Genthinerstrasse, Berlin. Oct. 5, 1931, No. 27636. Convention date, Oct. 7, 1930. [Class 40 (ii).] A sound-record suitable for photo-electric reproduction is made on a film of cellulose hydrate by a mechanical printing process. A negative record of the varying width type is first made by the. usual photographic recording process, and from this a relief record is made on a bichromate gelatine film to serve as a printing clichÚ. Printing ink or the like, which may consist of soot, colloidal graphite, or mineral colours, is then transferred to the cellulose film in known manner. Specification 331,278, [Class 40 (ii), Phonographs &c.], is referred to.
GB27636/31A 1930-10-07 1931-10-05 Improvements in or relating to optical sound records Expired GB390509A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE390509X 1930-10-07

Publications (1)

Publication Number Publication Date
GB390509A true GB390509A (en) 1933-04-05

Family

ID=6374473

Family Applications (1)

Application Number Title Priority Date Filing Date
GB27636/31A Expired GB390509A (en) 1930-10-07 1931-10-05 Improvements in or relating to optical sound records

Country Status (1)

Country Link
GB (1) GB390509A (en)

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