JPS55135342A - Reproducing stylus of reproducing element of variation detection type for electrostatic capacity value - Google Patents

Reproducing stylus of reproducing element of variation detection type for electrostatic capacity value

Info

Publication number
JPS55135342A
JPS55135342A JP4175279A JP4175279A JPS55135342A JP S55135342 A JPS55135342 A JP S55135342A JP 4175279 A JP4175279 A JP 4175279A JP 4175279 A JP4175279 A JP 4175279A JP S55135342 A JPS55135342 A JP S55135342A
Authority
JP
Japan
Prior art keywords
reproducing
sliding contact
contact surface
stylus
shape
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
JP4175279A
Other languages
Japanese (ja)
Inventor
Keishi Segawa
Takeshi Shioiri
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 JP4175279A priority Critical patent/JPS55135342A/en
Publication of JPS55135342A publication Critical patent/JPS55135342A/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

  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)

Abstract

PURPOSE:To lessen the eating of a stylus into a disk by employing the shape that while a sliding contact surface with the disk forms an edge extending from its lead-in part to an electrode part side in a curved line and there is no corner part in the width direction of recording tracks. CONSTITUTION:Sliding contact surface P is so shaped that the edge part extending from lead-in part side F to electrode part side G will be formed in a continuous curved line of different curvatures. Here, although the shape of sliding contact surface P should by symmetric on virtual center line X, slight dispersion of the shape is allowable. Reproducing stylus body S with sliding contact surface P like this uses a high-hardness prismatic material with resistance to wear and around its circumferential surface, a conductive coating is formed by sputtering, etc., so as to constitute the electrode part.
JP4175279A 1979-04-06 1979-04-06 Reproducing stylus of reproducing element of variation detection type for electrostatic capacity value Pending JPS55135342A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4175279A JPS55135342A (en) 1979-04-06 1979-04-06 Reproducing stylus of reproducing element of variation detection type for electrostatic capacity value

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4175279A JPS55135342A (en) 1979-04-06 1979-04-06 Reproducing stylus of reproducing element of variation detection type for electrostatic capacity value

Publications (1)

Publication Number Publication Date
JPS55135342A true JPS55135342A (en) 1980-10-22

Family

ID=12617143

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4175279A Pending JPS55135342A (en) 1979-04-06 1979-04-06 Reproducing stylus of reproducing element of variation detection type for electrostatic capacity value

Country Status (1)

Country Link
JP (1) JPS55135342A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4398282A (en) * 1980-05-10 1983-08-09 Victor Company Of Japan, Limited Capacitance detection type stylus for grooveless disc records and method for making same
US4439853A (en) * 1981-08-12 1984-03-27 Rca Corporation Capacitive playback stylus
US4439854A (en) * 1981-08-12 1984-03-27 Rca Corporation Video disc stylus
US5052179A (en) * 1989-07-07 1991-10-01 Kabushiki Kaisha Kobe Seiko Sho Pump discharge flow rate controlled by pilot pressure acting on vehicle drive valves

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4398282A (en) * 1980-05-10 1983-08-09 Victor Company Of Japan, Limited Capacitance detection type stylus for grooveless disc records and method for making same
US4439853A (en) * 1981-08-12 1984-03-27 Rca Corporation Capacitive playback stylus
US4439854A (en) * 1981-08-12 1984-03-27 Rca Corporation Video disc stylus
US5052179A (en) * 1989-07-07 1991-10-01 Kabushiki Kaisha Kobe Seiko Sho Pump discharge flow rate controlled by pilot pressure acting on vehicle drive valves

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