JPS5730130A - Production of abrasive-dish original disk with groove for video disk stylus - Google Patents

Production of abrasive-dish original disk with groove for video disk stylus

Info

Publication number
JPS5730130A
JPS5730130A JP10252480A JP10252480A JPS5730130A JP S5730130 A JPS5730130 A JP S5730130A JP 10252480 A JP10252480 A JP 10252480A JP 10252480 A JP10252480 A JP 10252480A JP S5730130 A JPS5730130 A JP S5730130A
Authority
JP
Japan
Prior art keywords
layer
groove
abrasive
disk
stylus
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
JP10252480A
Other languages
Japanese (ja)
Inventor
Shigemi Nakamura
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP10252480A priority Critical patent/JPS5730130A/en
Publication of JPS5730130A publication Critical patent/JPS5730130A/en
Pending legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
    • C03C17/34—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions
    • C03C17/36—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
    • C03C17/34—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions
    • C03C17/36—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal
    • C03C17/3602—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal the metal being present as a layer
    • C03C17/3668—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal the metal being present as a layer the multilayer coating having electrical properties
    • C03C17/3671—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal the metal being present as a layer the multilayer coating having electrical properties specially adapted for use as electrodes
    • 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
    • G11B3/44—Styli, e.g. sapphire, diamond
    • G11B3/56—Sharpening
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C2218/00—Methods for coating glass
    • C03C2218/30—Aspects of methods for coating glass not covered above
    • C03C2218/32—After-treatment
    • C03C2218/328—Partly or completely removing a coating
    • C03C2218/33—Partly or completely removing a coating by etching

Abstract

PURPOSE:To improve the life of a stylus by making a sharp and deep groove by providing two layers and a top photoresist layer on a glass plate and by etching them successively. CONSTITUTION:On a glass plate 1, the 1st thick layer 2 made of SiO2 and the 2nd thin layer 3 made of Al on it are formed, and on it, a thin photoresist film 4 is coated. Then, the photoresist exposed spirally to laser light is developed to form (b) a spiral groove. This photoresist layer is used as a mask to etch the 2nd layer, thereby forming (c) a shallow groove in the 2nd layer. Further, this is used as a mask for the plasma etching of the 1st layer over control over the inclination of a groove to make a deep groove, and the 2nd layer is removed to obtain an abrasive original disk having a sharp, steep and deep spiral groove.
JP10252480A 1980-07-28 1980-07-28 Production of abrasive-dish original disk with groove for video disk stylus Pending JPS5730130A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10252480A JPS5730130A (en) 1980-07-28 1980-07-28 Production of abrasive-dish original disk with groove for video disk stylus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10252480A JPS5730130A (en) 1980-07-28 1980-07-28 Production of abrasive-dish original disk with groove for video disk stylus

Publications (1)

Publication Number Publication Date
JPS5730130A true JPS5730130A (en) 1982-02-18

Family

ID=14329715

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10252480A Pending JPS5730130A (en) 1980-07-28 1980-07-28 Production of abrasive-dish original disk with groove for video disk stylus

Country Status (1)

Country Link
JP (1) JPS5730130A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60173736A (en) * 1984-02-06 1985-09-07 Nippon Telegr & Teleph Corp <Ntt> Manufacture of stamper for optical disk
JPS60173737A (en) * 1984-02-09 1985-09-07 Nippon Telegr & Teleph Corp <Ntt> Manufacture of stamper for optical disk
JPS61240452A (en) * 1985-04-15 1986-10-25 イ−ストマン　コダック　カンパニ− Making of glass forming mold
JPH0210535A (en) * 1988-06-29 1990-01-16 Nec Home Electron Ltd Optical mother disk and its manufacture
WO1995015555A1 (en) * 1993-12-01 1995-06-08 Baradun R & D. Ltd Disk medium having a designed topography
US5576918A (en) * 1991-12-17 1996-11-19 Baradun R&D Ltd. Magnetic disk medium with designed textured surfaces and controlled surface roughness and method of producing same
WO2005013264A1 (en) * 2003-07-31 2005-02-10 Tdk Corporation Production process and production system of magnetic recording medium
WO2005015549A1 (en) * 2003-08-07 2005-02-17 Tdk Corporation Production process and production system of magnetic recording medium

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60173736A (en) * 1984-02-06 1985-09-07 Nippon Telegr & Teleph Corp <Ntt> Manufacture of stamper for optical disk
JPS60173737A (en) * 1984-02-09 1985-09-07 Nippon Telegr & Teleph Corp <Ntt> Manufacture of stamper for optical disk
JPS61240452A (en) * 1985-04-15 1986-10-25 イ−ストマン　コダック　カンパニ− Making of glass forming mold
JPH0210535A (en) * 1988-06-29 1990-01-16 Nec Home Electron Ltd Optical mother disk and its manufacture
US5576918A (en) * 1991-12-17 1996-11-19 Baradun R&D Ltd. Magnetic disk medium with designed textured surfaces and controlled surface roughness and method of producing same
WO1995015555A1 (en) * 1993-12-01 1995-06-08 Baradun R & D. Ltd Disk medium having a designed topography
WO2005013264A1 (en) * 2003-07-31 2005-02-10 Tdk Corporation Production process and production system of magnetic recording medium
US7470374B2 (en) 2003-07-31 2008-12-30 Tdk Corporation Manufacturing method and manufacturing apparatus of magnetic recording medium
WO2005015549A1 (en) * 2003-08-07 2005-02-17 Tdk Corporation Production process and production system of magnetic recording medium

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