JPS573205A - Manufacture of polished sheet - Google Patents

Manufacture of polished sheet

Info

Publication number
JPS573205A
JPS573205A JP7636180A JP7636180A JPS573205A JP S573205 A JPS573205 A JP S573205A JP 7636180 A JP7636180 A JP 7636180A JP 7636180 A JP7636180 A JP 7636180A JP S573205 A JPS573205 A JP S573205A
Authority
JP
Japan
Prior art keywords
resin
sheet
diamond
reproduction
impalpable powder
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.)
Pending
Application number
JP7636180A
Other languages
Japanese (ja)
Inventor
Toshiji Fujita
Akihide Saito
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.)
Toppan Inc
Original Assignee
Toppan Printing Co Ltd
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 Toppan Printing Co Ltd filed Critical Toppan Printing Co Ltd
Priority to JP7636180A priority Critical patent/JPS573205A/en
Publication of JPS573205A publication Critical patent/JPS573205A/en
Pending 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
    • G11B3/72—Groove formations, e.g. run-in groove, run-out groove

Landscapes

  • Polishing Bodies And Polishing Tools (AREA)

Abstract

PURPOSE:To perform stable reproduction in great quantities with constant quality by coating the surface of a sheet of thermoplastic resin with resin, by press-contacting a stamper after sticking impalpable powder of diamond on the surface, and by carrying out a heat treatment. CONSTITUTION:On a sheet 1 of thermoplastic resin such as poly(vinyl chloride), another thermosetting resin, such as alkyd resin, is applied by spraying, etc., to form a film 2. After the application, it is left at the room temperature for a certain time to volatilize a volatile solvent, forming a thin viscous film. Impalpable powder of diamond 3 is sprinkled and then after part of it which is not in contact with the thermosetting resin is shaken off, the processes of pressurizing, heating and cooling are carried out to form polished grooves 4 in a desired shape. Thus, pictures of invariably stable quality are obtained through the reproduction of a high-density information carrier by a scanning stylus.
JP7636180A 1980-06-06 1980-06-06 Manufacture of polished sheet Pending JPS573205A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7636180A JPS573205A (en) 1980-06-06 1980-06-06 Manufacture of polished sheet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7636180A JPS573205A (en) 1980-06-06 1980-06-06 Manufacture of polished sheet

Publications (1)

Publication Number Publication Date
JPS573205A true JPS573205A (en) 1982-01-08

Family

ID=13603212

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7636180A Pending JPS573205A (en) 1980-06-06 1980-06-06 Manufacture of polished sheet

Country Status (1)

Country Link
JP (1) JPS573205A (en)

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