GB446370A - A disc for phonographic recording - Google Patents

A disc for phonographic recording

Info

Publication number
GB446370A
GB446370A GB1519735A GB1519735A GB446370A GB 446370 A GB446370 A GB 446370A GB 1519735 A GB1519735 A GB 1519735A GB 1519735 A GB1519735 A GB 1519735A GB 446370 A GB446370 A GB 446370A
Authority
GB
United Kingdom
Prior art keywords
groove
aluminium
impregnated
dye
lake
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
GB1519735A
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
Priority to GB1519735A priority Critical patent/GB446370A/en
Publication of GB446370A publication Critical patent/GB446370A/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
    • G11B3/00—Recording by mechanical cutting, deforming or pressing, e.g. of grooves or pits; Reproducing by mechanical sensing; Record carriers therefor
    • G11B3/68—Record carriers
    • G11B3/70—Record carriers characterised by the selection of material or structure; Processes or apparatus specially adapted for manufacturing record carriers

Landscapes

  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)

Abstract

446,370. Sound-record blanks. KUBO, H., 301, Shirokane Sanko-cho, Shiba-ku, Tokio. May 24, 1935, No. 15197. [Class 40 (ii)] A disc record blank is made of metal such as aluminium, having the recording surface oxidized electrolytically, the oxide being impregnated with a dye. In the example shown, an oxide layer 2 on an aluminium plate 1 is impregnated with a dye, such as a sulphon acid black, which permeates among the oxide particles 3 and reacts chemically therewith to form a lake. The hard lake coating is pressed down into the aluminium base when a sound groove 4 is formed in it. Wearing-out of the groove becomes evident when the aluminimn is visible at the bottom of the groove.
GB1519735A 1935-05-24 1935-05-24 A disc for phonographic recording Expired GB446370A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1519735A GB446370A (en) 1935-05-24 1935-05-24 A disc for phonographic recording

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1519735A GB446370A (en) 1935-05-24 1935-05-24 A disc for phonographic recording

Publications (1)

Publication Number Publication Date
GB446370A true GB446370A (en) 1936-04-29

Family

ID=10054742

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1519735A Expired GB446370A (en) 1935-05-24 1935-05-24 A disc for phonographic recording

Country Status (1)

Country Link
GB (1) GB446370A (en)

Similar Documents

Publication Publication Date Title
GB1392203A (en) Information records and method of making same
GB1379355A (en) Laminar record member
GB1417708A (en) Electron beam recording
JPS5974523U (en) magnetic disk
JPS53123906A (en) Magnetic disc
GB446370A (en) A disc for phonographic recording
GB584747A (en) Improvements in and relating to talking machines with automatic record changer for playing records of different diameters
GB1395704A (en) Magnetic materials
GB511164A (en) Improvements in or relating to sound record carriers
US1665759A (en) Phonograph record and method of making the same
US2012134A (en) Disk for phonographic recording
US2258596A (en) Recording and reproducing element
GB539534A (en) Improvements in or relating to sound recording
US2148225A (en) Sound record disk
JPS5299804A (en) Production of orginal disc for information recording medium
JPS5862451U (en) optical recording medium
GB462189A (en) Sound record disc and process for cutting sound grooves in sound record discs
GB1527124A (en) Modulated groove records
GB405541A (en) Improved method of manufacturing gramophone discs
JPS58151718U (en) Friction body in oil
GB247786A (en) Improvements in or relating to records for sound recording or reproducing machines
GB523568A (en) Improved method of printing sound-plus-picture kinematograph films
AU107767B2 (en) Improvements in or relating to the recording, coding and reproduction of statistical information
GB414499A (en) Improvements in and relating to methods of manufacturing sound records
GB393457A (en) Improvements relating to picture postcards, advertisement cards, and similar representations or pictures