GB439711A - Improvements in or relating to the manufacture of carriers for the mechanical recording of optically reproducible vibration tracks - Google Patents

Improvements in or relating to the manufacture of carriers for the mechanical recording of optically reproducible vibration tracks

Info

Publication number
GB439711A
GB439711A GB28326/34A GB2832634A GB439711A GB 439711 A GB439711 A GB 439711A GB 28326/34 A GB28326/34 A GB 28326/34A GB 2832634 A GB2832634 A GB 2832634A GB 439711 A GB439711 A GB 439711A
Authority
GB
United Kingdom
Prior art keywords
carriers
recording
relating
manufacture
mechanical recording
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
GB28326/34A
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of GB439711A publication Critical patent/GB439711A/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
    • G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor

Abstract

Relates to carriers such as films, on which records of vibrations may be made mechanically in such a manner that they may be reproduced by optical means, such carriers having a recording layer of gelatine. According to the invention which is particularly applicable for sound-recording or picture-telegraphy, in order to improve the quality of the recording layer, so as to prevent the formation of scratches and a frosted appearance on the record track as far as possible, and to minimize blunting of the cutting edge of the recording tool, a sulphonated castor oil such as that known as "Türkonöl" is admixed with the gelatime, either before application to the carrier, or afterwards by impregnation.
GB28326/34A 1933-10-05 1934-10-03 Improvements in or relating to the manufacture of carriers for the mechanical recording of optically reproducible vibration tracks Expired GB439711A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE439711X 1933-10-05

Publications (1)

Publication Number Publication Date
GB439711A true GB439711A (en) 1935-12-12

Family

ID=6507342

Family Applications (1)

Application Number Title Priority Date Filing Date
GB28326/34A Expired GB439711A (en) 1933-10-05 1934-10-03 Improvements in or relating to the manufacture of carriers for the mechanical recording of optically reproducible vibration tracks

Country Status (1)

Country Link
GB (1) GB439711A (en)

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