JPS54104814A - Magnetic disc recorder-reproducer - Google Patents

Magnetic disc recorder-reproducer

Info

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
Application number
JP1166778A
Other languages
Japanese (ja)
Inventor
Kazumasa Doi
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 JP1166778A priority Critical patent/JPS54104814A/en
Publication of JPS54104814A publication Critical patent/JPS54104814A/en
Pending legal-status Critical Current

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
JP1166778A 1978-02-03 1978-02-03 Magnetic disc recorder-reproducer Pending JPS54104814A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (6)

* Cited by examiner, † Cited by third party
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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