JPS5542323A - Electrostatic capacity type video disc reproducing stylus - Google Patents

Electrostatic capacity type video disc reproducing stylus

Info

Publication number
JPS5542323A
JPS5542323A JP11429178A JP11429178A JPS5542323A JP S5542323 A JPS5542323 A JP S5542323A JP 11429178 A JP11429178 A JP 11429178A JP 11429178 A JP11429178 A JP 11429178A JP S5542323 A JPS5542323 A JP S5542323A
Authority
JP
Japan
Prior art keywords
reproducing stylus
electrode
video disc
producibility
mass
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.)
Granted
Application number
JP11429178A
Other languages
Japanese (ja)
Other versions
JPS5845097B2 (en
Inventor
Keishi Segawa
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.)
Victor Company of Japan Ltd
Original Assignee
Victor Company of Japan 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 Victor Company of Japan Ltd filed Critical Victor Company of Japan Ltd
Priority to JP11429178A priority Critical patent/JPS5845097B2/en
Publication of JPS5542323A publication Critical patent/JPS5542323A/en
Publication of JPS5845097B2 publication Critical patent/JPS5845097B2/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
    • 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

  • Moving Of The Head To Find And Align With The Track (AREA)
  • Magnetic Heads (AREA)

Abstract

PURPOSE:To improve reliability to damage of a reproducing stylus as well as mass- producibility by bonding an electrode, which detects an information signal, to a flank surface formed by elongation in the same direction as the tangent of a track of the reproducing stylus. CONSTITUTION:Since constant-width streak part 23b of electrode 23 is formed on surface 22 in parallel to the scanning direction of reproducing stylus body 21, shock due to the elastic restoration of video disc 2 never operates upon end part 23a under the electrode and no thermal energy attending upon a scan converges. Further, since the electrode is applied with Hf or Ti by sputtering, its thickness is thin and precisely set, so that a video disc of extremely-high density can be obtained. Further, there is no need to symmetrize reproducing stylus body 21 on the scanning direction, and consequently the number of polished surfaces is reduced, providing excellent mass-producibility. In this way, reliability to a breakdown and mass- producibility will both improve.
JP11429178A 1978-09-18 1978-09-18 Capacitive video disc playback needle Expired JPS5845097B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11429178A JPS5845097B2 (en) 1978-09-18 1978-09-18 Capacitive video disc playback needle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11429178A JPS5845097B2 (en) 1978-09-18 1978-09-18 Capacitive video disc playback needle

Publications (2)

Publication Number Publication Date
JPS5542323A true JPS5542323A (en) 1980-03-25
JPS5845097B2 JPS5845097B2 (en) 1983-10-07

Family

ID=14634167

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11429178A Expired JPS5845097B2 (en) 1978-09-18 1978-09-18 Capacitive video disc playback needle

Country Status (1)

Country Link
JP (1) JPS5845097B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5746338A (en) * 1980-09-01 1982-03-16 Victor Co Of Japan Ltd Production of regenerating stylus for electrostatic capacity type disk recording medium
JPS57173135U (en) * 1981-04-22 1982-11-01

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5746338A (en) * 1980-09-01 1982-03-16 Victor Co Of Japan Ltd Production of regenerating stylus for electrostatic capacity type disk recording medium
JPS57173135U (en) * 1981-04-22 1982-11-01
JPS6226817Y2 (en) * 1981-04-22 1987-07-09

Also Published As

Publication number Publication date
JPS5845097B2 (en) 1983-10-07

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