JPS56140535A - Information reproducing stylus - Google Patents

Information reproducing stylus

Info

Publication number
JPS56140535A
JPS56140535A JP4326880A JP4326880A JPS56140535A JP S56140535 A JPS56140535 A JP S56140535A JP 4326880 A JP4326880 A JP 4326880A JP 4326880 A JP4326880 A JP 4326880A JP S56140535 A JPS56140535 A JP S56140535A
Authority
JP
Japan
Prior art keywords
base material
stylus
electrode
information reproducing
striplike
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
JP4326880A
Other languages
Japanese (ja)
Inventor
Takashi Kimura
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.)
Sharp Corp
Original Assignee
Sharp Corp
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 Sharp Corp filed Critical Sharp Corp
Priority to JP4326880A priority Critical patent/JPS56140535A/en
Publication of JPS56140535A publication Critical patent/JPS56140535A/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

Landscapes

  • Recording Measured Values (AREA)

Abstract

PURPOSE:To improve the reliability of an obtained information reproducing stylus and to prolong its life by burying a striplike electrode between a stylus base material and a protection layer having a coefficient of thermal expansion equal to that of the base material. CONSTITUTION:On stylus base material such as sapphire, striplike electrode 2' is formed by superfine work technology such as lithography. On it, protecting coating layer 3 of a hard insulator having a coefficient of thermal expansion equal to that of sapphire stylus base material 1 such as Al2O3 is also formed. Thus, striplike electrodes 2' is buried between stylus base material 1 and protection coating layer 3. Therefore, even if the information reproducing stylus wears off from sliding surface 1a owing to a slide on disks, width (l) of electrode 2' is constant all the time, so that a reproduced signal will neither attenuate nor be ceased. In addition, the damage of the slide end of electrode 2' is prevented.
JP4326880A 1980-04-01 1980-04-01 Information reproducing stylus Pending JPS56140535A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4326880A JPS56140535A (en) 1980-04-01 1980-04-01 Information reproducing stylus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4326880A JPS56140535A (en) 1980-04-01 1980-04-01 Information reproducing stylus

Publications (1)

Publication Number Publication Date
JPS56140535A true JPS56140535A (en) 1981-11-02

Family

ID=12659082

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4326880A Pending JPS56140535A (en) 1980-04-01 1980-04-01 Information reproducing stylus

Country Status (1)

Country Link
JP (1) JPS56140535A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4480326A (en) * 1981-05-26 1984-10-30 Victor Company Of Japan, Ltd. Stylus having a conductive carbon layer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4480326A (en) * 1981-05-26 1984-10-30 Victor Company Of Japan, Ltd. Stylus having a conductive carbon layer

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