JPS56140535A - Information reproducing stylus - Google Patents
Information reproducing stylusInfo
- Publication number
- JPS56140535A JPS56140535A JP4326880A JP4326880A JPS56140535A JP S56140535 A JPS56140535 A JP S56140535A JP 4326880 A JP4326880 A JP 4326880A JP 4326880 A JP4326880 A JP 4326880A JP S56140535 A JPS56140535 A JP S56140535A
- Authority
- JP
- Japan
- Prior art keywords
- base material
- stylus
- electrode
- information reproducing
- striplike
- 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
- 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
- Recording Measured Values (AREA)
Abstract
PURPOSE:To improve the reliability of an obtained information reproducing stylus and to prolong its life by burying a striplike electrode between a stylus base material and a protection layer having a coefficient of thermal expansion equal to that of the base material. CONSTITUTION:On stylus base material such as sapphire, striplike electrode 2' is formed by superfine work technology such as lithography. On it, protecting coating layer 3 of a hard insulator having a coefficient of thermal expansion equal to that of sapphire stylus base material 1 such as Al2O3 is also formed. Thus, striplike electrodes 2' is buried between stylus base material 1 and protection coating layer 3. Therefore, even if the information reproducing stylus wears off from sliding surface 1a owing to a slide on disks, width (l) of electrode 2' is constant all the time, so that a reproduced signal will neither attenuate nor be ceased. In addition, the damage of the slide end of electrode 2' is prevented.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4326880A JPS56140535A (en) | 1980-04-01 | 1980-04-01 | Information reproducing stylus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4326880A JPS56140535A (en) | 1980-04-01 | 1980-04-01 | Information reproducing stylus |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS56140535A true JPS56140535A (en) | 1981-11-02 |
Family
ID=12659082
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4326880A Pending JPS56140535A (en) | 1980-04-01 | 1980-04-01 | Information reproducing stylus |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56140535A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4480326A (en) * | 1981-05-26 | 1984-10-30 | Victor Company Of Japan, Ltd. | Stylus having a conductive carbon layer |
-
1980
- 1980-04-01 JP JP4326880A patent/JPS56140535A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4480326A (en) * | 1981-05-26 | 1984-10-30 | Victor Company Of Japan, Ltd. | Stylus having a conductive carbon layer |
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