JPS54104814A - Magnetic disc recorder-reproducer - Google Patents
Magnetic disc recorder-reproducerInfo
- Publication number
- JPS54104814A JPS54104814A JP1166778A JP1166778A JPS54104814A JP S54104814 A JPS54104814 A JP S54104814A JP 1166778 A JP1166778 A JP 1166778A JP 1166778 A JP1166778 A JP 1166778A JP S54104814 A JPS54104814 A JP S54104814A
- Authority
- JP
- Japan
- Prior art keywords
- comparator
- voltage
- pressure
- magnetic head
- magnetic
- 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
Landscapes
- Adjustment Of The Magnetic Head Position Track Following On Tapes (AREA)
Abstract
PURPOSE: To prevent magnetic head from being contacted to a magnetic recording medium under more than necessary contact pressure by providing the magnetic head, magnetic disc and a forcing pressure detecting means which generates the output corresponding to the contact pressure.
CONSTITUTION: When it is assumed that a pressure is applied to a piezoelectric element 12 in the direction of raising a megentic head 5, this converted electric signal applies the power being Vi to a comparator 17 via DC amplifier 16. A reference voltage Vs obtained from a variable reference power source 18 is applied to one input of the comparator 17. If the voltage gain of the comparator 17 is let to be Ai, the output of the comparator 17 provides a voltage and this voltage is applied to a coil 14 which in turn acts attraction force, thereby making the magnetic head pressure constant.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1166778A JPS54104814A (en) | 1978-02-03 | 1978-02-03 | Magnetic disc recorder-reproducer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1166778A JPS54104814A (en) | 1978-02-03 | 1978-02-03 | Magnetic disc recorder-reproducer |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54104814A true JPS54104814A (en) | 1979-08-17 |
Family
ID=11784325
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1166778A Pending JPS54104814A (en) | 1978-02-03 | 1978-02-03 | Magnetic disc recorder-reproducer |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54104814A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5616842U (en) * | 1979-07-19 | 1981-02-14 | ||
JPS56145570A (en) * | 1980-04-14 | 1981-11-12 | Victor Co Of Japan Ltd | Signal pickup device |
JPS60171671A (en) * | 1984-02-15 | 1985-09-05 | Mitsubishi Electric Corp | Head supporting device of magnetic recording and reproducing device |
US4814907A (en) * | 1987-11-24 | 1989-03-21 | Goor Associates, Inc. | Method and apparatus for maintaining constant flying height via magnetic interaction |
US4954904A (en) * | 1987-11-24 | 1990-09-04 | Goor Associates, Inc. | Method and apparatus for preventing head crashes in a disk system |
-
1978
- 1978-02-03 JP JP1166778A patent/JPS54104814A/en active Pending
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5616842U (en) * | 1979-07-19 | 1981-02-14 | ||
JPS56145570A (en) * | 1980-04-14 | 1981-11-12 | Victor Co Of Japan Ltd | Signal pickup device |
JPS6252383B2 (en) * | 1980-04-14 | 1987-11-05 | Victor Company Of Japan | |
JPS60171671A (en) * | 1984-02-15 | 1985-09-05 | Mitsubishi Electric Corp | Head supporting device of magnetic recording and reproducing device |
US4814907A (en) * | 1987-11-24 | 1989-03-21 | Goor Associates, Inc. | Method and apparatus for maintaining constant flying height via magnetic interaction |
US4954904A (en) * | 1987-11-24 | 1990-09-04 | Goor Associates, Inc. | Method and apparatus for preventing head crashes in a disk system |
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