JPS5473616A - Magnetic head protective device - Google Patents

Magnetic head protective device

Info

Publication number
JPS5473616A
JPS5473616A JP14004477A JP14004477A JPS5473616A JP S5473616 A JPS5473616 A JP S5473616A JP 14004477 A JP14004477 A JP 14004477A JP 14004477 A JP14004477 A JP 14004477A JP S5473616 A JPS5473616 A JP S5473616A
Authority
JP
Japan
Prior art keywords
direct
magnetic head
current voltage
head
magnetic tape
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
JP14004477A
Other languages
Japanese (ja)
Inventor
Mikio Tominaga
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.)
Hitachi Denshi KK
Original Assignee
Hitachi Denshi KK
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 Hitachi Denshi KK filed Critical Hitachi Denshi KK
Priority to JP14004477A priority Critical patent/JPS5473616A/en
Publication of JPS5473616A publication Critical patent/JPS5473616A/en
Pending legal-status Critical Current

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
    • G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
    • G11B5/52—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with simultaneous movement of head and record carrier, e.g. rotation of head
    • G11B5/53—Disposition or mounting of heads on rotating support

Abstract

PURPOSE:To protect the magnetic head, prevent wear of the head, and extend the service life of magnetic tape, by keeping the magnetic head and magnetic tape in non-contact state in operation modes not requiring contact between the magnetic head and magnetic tape, such as fast-feeding, rewinding, and stopping. CONSTITUTION:When a direct-current voltage is applied to a piezoelectric element 6 through a conductor 8, the mounting base 7 of magnetic head 1 is driven by the piezoelectric effect in a way to cause the magnetic head 1 to contact with a magnetic tape 2. And non-contact state is established when the supply of direct-current voltage is stopped. A judging means 16, when an operation signal 20 is either record or playback, issues a command signal 18 to cause a changeover means 14 to supply direct-current voltage 19 to slip ring mechanisms 10a, 10b, so that the direct-current 19 is supplied into a driving means 9 to set the magnetic head 1 and magnetic tape 2 in contact with each other. The judging means 16, when the operation signal 20 is fast-feed, rewind or stop, issues, to the contrary, a command signal 18 to cause the changeover means 14 to disconnect the direct-current voltage 19 from the slip ring mechanisms 10a, 10b, so that the direct-current voltage 19 is not supplied into the driving means 9, hence keeping the head 1 and tape 2 in non-contact state.
JP14004477A 1977-11-24 1977-11-24 Magnetic head protective device Pending JPS5473616A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14004477A JPS5473616A (en) 1977-11-24 1977-11-24 Magnetic head protective device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14004477A JPS5473616A (en) 1977-11-24 1977-11-24 Magnetic head protective device

Publications (1)

Publication Number Publication Date
JPS5473616A true JPS5473616A (en) 1979-06-13

Family

ID=15259663

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14004477A Pending JPS5473616A (en) 1977-11-24 1977-11-24 Magnetic head protective device

Country Status (1)

Country Link
JP (1) JPS5473616A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6093616A (en) * 1983-10-26 1985-05-25 Olympus Optical Co Ltd Magnetic recording and reproducing device
US4581662A (en) * 1983-08-03 1986-04-08 Victor Company Of Japan, Ltd. Position control apparatus for controlling positions of rotary heads with respect to a recording medium
US4628378A (en) * 1983-08-26 1986-12-09 Canon Kabushiki Kaisha Information signal recording and/or reproducing apparatus
JPS62124621A (en) * 1985-11-25 1987-06-05 Canon Electronics Inc Recording or reproducing device
JPS62101115U (en) * 1985-12-13 1987-06-27
US4701821A (en) * 1985-06-03 1987-10-20 U.S. Philips Corporation Helical scan tape recorder without head-tape contact in stand-by mode
US4722015A (en) * 1982-07-19 1988-01-26 Canon Kabushiki Kaisha Recording and reproducing apparatus using a plurality of kinds of magnetic heads
US8159776B2 (en) 2007-04-20 2012-04-17 Hitachi Maxell, Ltd. Magnetic tape driving apparatus comprising a tape separation portion that separates a magnetic tape from a magnetoresistive head unit

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4722015A (en) * 1982-07-19 1988-01-26 Canon Kabushiki Kaisha Recording and reproducing apparatus using a plurality of kinds of magnetic heads
US4809095A (en) * 1982-07-19 1989-02-28 Canon Kabushiki Kaisha Recording and reproducing apparatus selectively using a plurality of kinds of recording mediums
US4581662A (en) * 1983-08-03 1986-04-08 Victor Company Of Japan, Ltd. Position control apparatus for controlling positions of rotary heads with respect to a recording medium
US4628378A (en) * 1983-08-26 1986-12-09 Canon Kabushiki Kaisha Information signal recording and/or reproducing apparatus
JPS6093616A (en) * 1983-10-26 1985-05-25 Olympus Optical Co Ltd Magnetic recording and reproducing device
US4701821A (en) * 1985-06-03 1987-10-20 U.S. Philips Corporation Helical scan tape recorder without head-tape contact in stand-by mode
JPS62124621A (en) * 1985-11-25 1987-06-05 Canon Electronics Inc Recording or reproducing device
JPS62101115U (en) * 1985-12-13 1987-06-27
US8159776B2 (en) 2007-04-20 2012-04-17 Hitachi Maxell, Ltd. Magnetic tape driving apparatus comprising a tape separation portion that separates a magnetic tape from a magnetoresistive head unit

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