JPS55157137A - Reproducing pickup for information recording disc - Google Patents
Reproducing pickup for information recording discInfo
- Publication number
- JPS55157137A JPS55157137A JP6220579A JP6220579A JPS55157137A JP S55157137 A JPS55157137 A JP S55157137A JP 6220579 A JP6220579 A JP 6220579A JP 6220579 A JP6220579 A JP 6220579A JP S55157137 A JPS55157137 A JP S55157137A
- Authority
- JP
- Japan
- Prior art keywords
- coil body
- stylus
- cantilever
- scanning
- magnet
- 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
Links
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B21/00—Head arrangements not specific to the method of recording or reproducing
- G11B21/02—Driving or moving of heads
- G11B21/12—Raising and lowering; Back-spacing or forward-spacing along track; Returning to starting position otherwise than during transducing operation
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B21/00—Head arrangements not specific to the method of recording or reproducing
- G11B21/16—Supporting the heads; Supporting the sockets for plug-in heads
- G11B21/20—Supporting the heads; Supporting the sockets for plug-in heads while the head is in operative position but stationary or permitting minor movements to follow irregularities in surface of record carrier
Abstract
PURPOSE:To make it possible to protect the stylus tip and change stylus pressure for scanning, by providing a coil body near the magnet provided at the back end of the cantilever and by supplying a current to the coil body to displace the scanning stylus at the cantilever tip. CONSTITUTION:Coil body 15 is arranged near magnet 3, which is provided at the back end of cantilever 1 where scanning stylus tip 2 of a reproducing pickup is fitted, in the position where vertical center axis 17 agrees with each other. When a DC current is supplied to coil body 15, coil body 15 becomes an electromagnet, and repulsive force is generated between magnet 3 and coil body 15, and magnet 3 moves downward. Then, cantilever 1 rotates with support damper 5 as the fulcrum, and stylus 2 moves upward. Level 1 rotates at the angle determined by rotation of support damper 5 and the vertical spring constant of head damper 4 and stops. When the current is reduced gradually, stylus tip 2 falls onto the disc surface softly. If a small current is supplied in the course of scanning, stylus pressure can be adjusted finely.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6220579A JPS55157137A (en) | 1979-05-22 | 1979-05-22 | Reproducing pickup for information recording disc |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6220579A JPS55157137A (en) | 1979-05-22 | 1979-05-22 | Reproducing pickup for information recording disc |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS55157137A true JPS55157137A (en) | 1980-12-06 |
JPS6155188B2 JPS6155188B2 (en) | 1986-11-26 |
Family
ID=13193401
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6220579A Granted JPS55157137A (en) | 1979-05-22 | 1979-05-22 | Reproducing pickup for information recording disc |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55157137A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59149267U (en) * | 1983-03-26 | 1984-10-05 | 三菱電機株式会社 | Video disk player pickup device |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5034203A (en) * | 1973-07-26 | 1975-04-02 | ||
JPS5079305A (en) * | 1973-11-12 | 1975-06-27 | ||
JPS53123024A (en) * | 1977-04-01 | 1978-10-27 | Victor Co Of Japan Ltd | Pickup unit for signal for rotary recording medium |
JPS5424002A (en) * | 1977-07-25 | 1979-02-23 | Victor Co Of Japan Ltd | Reproducer of optical information recording medium discs |
-
1979
- 1979-05-22 JP JP6220579A patent/JPS55157137A/en active Granted
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5034203A (en) * | 1973-07-26 | 1975-04-02 | ||
JPS5079305A (en) * | 1973-11-12 | 1975-06-27 | ||
JPS53123024A (en) * | 1977-04-01 | 1978-10-27 | Victor Co Of Japan Ltd | Pickup unit for signal for rotary recording medium |
JPS5424002A (en) * | 1977-07-25 | 1979-02-23 | Victor Co Of Japan Ltd | Reproducer of optical information recording medium discs |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59149267U (en) * | 1983-03-26 | 1984-10-05 | 三菱電機株式会社 | Video disk player pickup device |
JPH0135343Y2 (en) * | 1983-03-26 | 1989-10-27 |
Also Published As
Publication number | Publication date |
---|---|
JPS6155188B2 (en) | 1986-11-26 |
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