JPS57135421A - Dual gap magnetic head - Google Patents

Dual gap magnetic head

Info

Publication number
JPS57135421A
JPS57135421A JP2020881A JP2020881A JPS57135421A JP S57135421 A JPS57135421 A JP S57135421A JP 2020881 A JP2020881 A JP 2020881A JP 2020881 A JP2020881 A JP 2020881A JP S57135421 A JPS57135421 A JP S57135421A
Authority
JP
Japan
Prior art keywords
reproducing
rear side
center core
core
notched part
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
JP2020881A
Other languages
Japanese (ja)
Inventor
Mitsuo Abe
Katsuo Konishi
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 Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP2020881A priority Critical patent/JPS57135421A/en
Publication of JPS57135421A publication Critical patent/JPS57135421A/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
    • G11B5/127—Structure or manufacture of heads, e.g. inductive
    • G11B5/265—Structure or manufacture of a head with more than one gap for erasing, recording or reproducing on the same track

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)

Abstract

PURPOSE:To reduce the extent of cross feed in case of reproducing, to a level allowable for practical use, by providing a notched part for reducing the cross feed, on the rear side of a center core. CONSTITUTION:A dual gap magnetic head is constituted of a recording core 1a, a reproducing core 1b and a center core 1c, and has a recording gap 2a, a reproducing gap 2b, a recording coil 3a and a reproducing coil 3b. On the center core 1c, a notched part 4A is provided from the rear side, and a packing material 5A consisting of a non-magnetic material is embedded in said notched part in order to reinforce the head. The extent of cross feed can be reduced to a level allowable for practical use by providing the notched part from the rear side of the center core. Also, since the notch part is provided on the rear side, it is possible to select a packing material generated in a structure provided on the front side, and to solve various problems on running of a tape.
JP2020881A 1981-02-16 1981-02-16 Dual gap magnetic head Pending JPS57135421A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2020881A JPS57135421A (en) 1981-02-16 1981-02-16 Dual gap magnetic head

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2020881A JPS57135421A (en) 1981-02-16 1981-02-16 Dual gap magnetic head

Publications (1)

Publication Number Publication Date
JPS57135421A true JPS57135421A (en) 1982-08-21

Family

ID=12020742

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2020881A Pending JPS57135421A (en) 1981-02-16 1981-02-16 Dual gap magnetic head

Country Status (1)

Country Link
JP (1) JPS57135421A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4860132A (en) * 1981-12-24 1989-08-22 U.S. Philips Corporation Rotatable head assembly with offset sub-head gaps

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50123324A (en) * 1974-03-14 1975-09-27
JPS50160026A (en) * 1974-06-17 1975-12-25

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50123324A (en) * 1974-03-14 1975-09-27
JPS50160026A (en) * 1974-06-17 1975-12-25

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4860132A (en) * 1981-12-24 1989-08-22 U.S. Philips Corporation Rotatable head assembly with offset sub-head gaps

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