JPS56134332A - Reproduction stylus - Google Patents

Reproduction stylus

Info

Publication number
JPS56134332A
JPS56134332A JP3800880A JP3800880A JPS56134332A JP S56134332 A JPS56134332 A JP S56134332A JP 3800880 A JP3800880 A JP 3800880A JP 3800880 A JP3800880 A JP 3800880A JP S56134332 A JPS56134332 A JP S56134332A
Authority
JP
Japan
Prior art keywords
layer
aluminum
electrode
heat treatment
sapphire
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
JP3800880A
Other languages
Japanese (ja)
Inventor
Toshiyuki Kudo
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.)
Sanyo Electric Co Ltd
Original Assignee
Sanyo Electric 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 Sanyo Electric Co Ltd filed Critical Sanyo Electric Co Ltd
Priority to JP3800880A priority Critical patent/JPS56134332A/en
Publication of JPS56134332A publication Critical patent/JPS56134332A/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
    • G11B9/00—Recording or reproducing using a method not covered by one of the main groups G11B3/00 - G11B7/00; Record carriers therefor
    • G11B9/06—Recording or reproducing using a method not covered by one of the main groups G11B3/00 - G11B7/00; Record carriers therefor using record carriers having variable electrical capacitance; Record carriers therefor
    • G11B9/07—Heads for reproducing capacitive information
    • G11B9/075—Heads for reproducing capacitive information using mechanical contact with record carrier, e.g. by stylus

Abstract

PURPOSE:To obtain a reproduction stylus of a pickup for the electrostatic capacity type video disk having a large adhesion strength of an electrode, by providing an electrode metallic layer on a sapphire base, through an aluminum layer to which heat treatment has been performed. CONSTITUTION:An aluminum layer 5 of a prescribed thickness is formed by means of evaporation, etc., on a sapphire base 4, subsequently it is brought to heat treatment at a melting point of aluminum or below (about 630 deg.C is desirable) in a nonoxidizing atmosphere, and the base 4 and the layer 5 are firmly coupled by a diffusion layer 6 formed by a reaction of aluminum and sapphire. Subsequently, an electrode metallic layer 7 is formed by sticking a metal which is easy to form a compound with aluminum (to be selected from titanium, zirconium, tungsten, etc.) to a prescribed thickness by means of evaporation, etc., on the aluminum layer 5, after that, it is brought to heat treatment at approx. 500 deg.C or above in a nonoxidizing atmosphere, and a reproduction stylus is made by coupling the layer 5 and the layer 7 by an intermediate layer 8 formed by a reaction of the electrode metal and aluminum.
JP3800880A 1980-03-24 1980-03-24 Reproduction stylus Pending JPS56134332A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3800880A JPS56134332A (en) 1980-03-24 1980-03-24 Reproduction stylus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3800880A JPS56134332A (en) 1980-03-24 1980-03-24 Reproduction stylus

Publications (1)

Publication Number Publication Date
JPS56134332A true JPS56134332A (en) 1981-10-21

Family

ID=12513539

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3800880A Pending JPS56134332A (en) 1980-03-24 1980-03-24 Reproduction stylus

Country Status (1)

Country Link
JP (1) JPS56134332A (en)

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