JPS56163535A - Magnetic pickup and information signal carrier reproducer using said pickup - Google Patents
Magnetic pickup and information signal carrier reproducer using said pickupInfo
- Publication number
- JPS56163535A JPS56163535A JP6684280A JP6684280A JPS56163535A JP S56163535 A JPS56163535 A JP S56163535A JP 6684280 A JP6684280 A JP 6684280A JP 6684280 A JP6684280 A JP 6684280A JP S56163535 A JPS56163535 A JP S56163535A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic
- signal detecting
- pickup
- cantilever
- magnetic substance
- 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
Links
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
Landscapes
- Magnetic Record Carriers (AREA)
- Magnetic Heads (AREA)
Abstract
PURPOSE:To obtain a small-size and light-weight pickup containing no permanent magnet or the like, by fixing a signal detecting part made of a magnetic substance and having a bottom surface functioning as an opposite surface to a recording carrier at the tip of a cantilever made of a magnetic substance and then winding a signal detecting coil around the signal detecting part. CONSTITUTION:A signal detecting part 55 made of a magnetic substance is fixed at the tip of a cantilever 53 made of a magnetic substance. For the bottom surface of the part 55, a magnetic part 4 and a nonmagnetic part 5 are provided alternately to use the bottom surface for an opposite surface to a recording carrier 57 on which the information signal is recorded. In addition, a signal detecting coil 55 is wound around a part of the part 55 to induce a current in accordance with the change of the magnetic flux. At the same time, the size of the above-mentioned opposite surface is set equal to or smaller than the length of the part 5 of the carrier 57. For instance, a holder 126 of the part 55 which is made of diamond or the like is fixed to a cantilever 121, and Cr or the like is vapor-deposited or adhered to the side surface of the holder 126 to form a signal detecting part 122. Then a magnetic field generating part 51 is provided within a magnetic circuit including a turntable 54 to detect the difference of magnetic resistance in the form of a variation of current.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6684280A JPS56163535A (en) | 1980-05-20 | 1980-05-20 | Magnetic pickup and information signal carrier reproducer using said pickup |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6684280A JPS56163535A (en) | 1980-05-20 | 1980-05-20 | Magnetic pickup and information signal carrier reproducer using said pickup |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS56163535A true JPS56163535A (en) | 1981-12-16 |
Family
ID=13327500
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6684280A Pending JPS56163535A (en) | 1980-05-20 | 1980-05-20 | Magnetic pickup and information signal carrier reproducer using said pickup |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56163535A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5181467A (en) * | 1990-01-26 | 1993-01-26 | Fuji Photo Film Co., Ltd. | Automatic dampening water replenisher |
-
1980
- 1980-05-20 JP JP6684280A patent/JPS56163535A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5181467A (en) * | 1990-01-26 | 1993-01-26 | Fuji Photo Film Co., Ltd. | Automatic dampening water replenisher |
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