JPS5613531A - Optical recording and reproducing device - Google Patents

Optical recording and reproducing device

Info

Publication number
JPS5613531A
JPS5613531A JP8858879A JP8858879A JPS5613531A JP S5613531 A JPS5613531 A JP S5613531A JP 8858879 A JP8858879 A JP 8858879A JP 8858879 A JP8858879 A JP 8858879A JP S5613531 A JPS5613531 A JP S5613531A
Authority
JP
Japan
Prior art keywords
coil
electric power
axis
reproduction
reflecting mirror
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
JP8858879A
Other languages
Japanese (ja)
Inventor
Sadao Mizuno
Yoshikazu Goto
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP8858879A priority Critical patent/JPS5613531A/en
Publication of JPS5613531A publication Critical patent/JPS5613531A/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
    • G11B33/00—Constructional parts, details or accessories not provided for in the other groups of this subclass
    • G11B33/02—Cabinets; Cases; Stands; Disposition of apparatus therein or thereon
    • G11B33/08—Insulation or absorption of undesired vibrations or sounds
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
    • G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G11B7/0925—Electromechanical actuators for lens positioning

Abstract

PURPOSE:To fix securely a reflecting mirror, vibrating for tracking in reproduction, in recording by attracting and fixing a disk, formed in the same body with the rotary axis of the reflecting mirror of an optical recording and reproduction system, by a magnetic field provided by a coil. CONSTITUTION:In reproduction, switch 26 is changed over to disconnect electric power source 27 and input terminal 13. As a result, while electric power supply to coil 10 is shut off, the feedback output of differential amplifier 25 that corresponds to a track error excites coil 7 and reflecting mirror 1 of the optical recording and reproduction system vibrates via magnet 5 and returning elastic body 14 provided on its rotary axis 3 to perform tracking. In recording, once an electric power current is supplied from electric power source 27 to coil 10 via switch 26, magnetic disk 9 fixed on axis 3 is attracted by a magnetic field provided by coil 10 and then elastically deforms by coming into contact with yokes 11 and 12, applying damping force to axis 3. Axis 3 is therefore fixed securely and the generation of harmful vibrations of mirror 1 due to external force is prevented.
JP8858879A 1979-07-11 1979-07-11 Optical recording and reproducing device Pending JPS5613531A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8858879A JPS5613531A (en) 1979-07-11 1979-07-11 Optical recording and reproducing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8858879A JPS5613531A (en) 1979-07-11 1979-07-11 Optical recording and reproducing device

Publications (1)

Publication Number Publication Date
JPS5613531A true JPS5613531A (en) 1981-02-09

Family

ID=13946987

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8858879A Pending JPS5613531A (en) 1979-07-11 1979-07-11 Optical recording and reproducing device

Country Status (1)

Country Link
JP (1) JPS5613531A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6461722A (en) * 1987-09-01 1989-03-08 Seiko Epson Corp Galvanomirror
JPS6468715A (en) * 1987-09-09 1989-03-14 Seiko Epson Corp Galvanomirror
US5063555A (en) * 1989-11-27 1991-11-05 Sony Corporation Rotary optical head

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6461722A (en) * 1987-09-01 1989-03-08 Seiko Epson Corp Galvanomirror
JPS6468715A (en) * 1987-09-09 1989-03-14 Seiko Epson Corp Galvanomirror
US5063555A (en) * 1989-11-27 1991-11-05 Sony Corporation Rotary optical head

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