JPS55160322A - Magnetic head - Google Patents

Magnetic head

Info

Publication number
JPS55160322A
JPS55160322A JP6504079A JP6504079A JPS55160322A JP S55160322 A JPS55160322 A JP S55160322A JP 6504079 A JP6504079 A JP 6504079A JP 6504079 A JP6504079 A JP 6504079A JP S55160322 A JPS55160322 A JP S55160322A
Authority
JP
Japan
Prior art keywords
core
recording medium
magnetic gap
constituting
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
JP6504079A
Other languages
Japanese (ja)
Inventor
Nobuhiro Tokuyado
Takao Ketori
Masamichi Yamada
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 JP6504079A priority Critical patent/JPS55160322A/en
Publication of JPS55160322A publication Critical patent/JPS55160322A/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
    • G11B5/187—Structure or manufacture of the surface of the head in physical contact with, or immediately adjacent to the recording medium; Pole pieces; Gap features
    • G11B5/245—Structure or manufacture of the surface of the head in physical contact with, or immediately adjacent to the recording medium; Pole pieces; Gap features comprising means for controlling the reluctance of the magnetic circuit in a head with single gap, for co-operation with one track
    • G11B5/2452—Structure or manufacture of the surface of the head in physical contact with, or immediately adjacent to the recording medium; Pole pieces; Gap features comprising means for controlling the reluctance of the magnetic circuit in a head with single gap, for co-operation with one track where the dimensions of the effective gap are controlled

Landscapes

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

Abstract

PURPOSE:To obtain a magnetic head excellent in reproduction sensitivity and used for both recording and reproduction, by composing a core, on the incoming side of a recording medium, of the 1st core closer to the recording medium and constituting a narrower magnetic gap and the 2nd core further from the recording medium and constituting a wider magnetic gap. CONSTITUTION:The magnetic head, provided with a difference in level at a core on the incoming side of recording medium 1 while relation Gr<Gw is born between interval of the 1st magnetic gap 4 closer to recording medium 1 and interval Gw of the 2nd magnetic gap 5 further from recording medium 1, has the incoming-side core consisting of the 1st core 7 constituting the 1st magnetic gap 4 and the 2nd core 8 constituting the 2nd magnetic gap 5. Consequently, it is made possible to saturate the 1st core 7 constituting the 1st magnetic gap 4 with a small bias magnetic field and even when the 1st core 7 is saturated, the 2nd core 8 can be made to remain unsaturated, so that the generation of nonlinear distortion can be reduced.
JP6504079A 1979-05-28 1979-05-28 Magnetic head Pending JPS55160322A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6504079A JPS55160322A (en) 1979-05-28 1979-05-28 Magnetic head

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6504079A JPS55160322A (en) 1979-05-28 1979-05-28 Magnetic head

Publications (1)

Publication Number Publication Date
JPS55160322A true JPS55160322A (en) 1980-12-13

Family

ID=13275443

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6504079A Pending JPS55160322A (en) 1979-05-28 1979-05-28 Magnetic head

Country Status (1)

Country Link
JP (1) JPS55160322A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0166818A1 (en) * 1984-06-04 1986-01-08 Siemens Aktiengesellschaft Layer-built magnetic head for a recording medium to be perpendicularly magnetized
JPS61292214A (en) * 1985-06-18 1986-12-23 Matsushita Electric Ind Co Ltd Magnetic head
US5535078A (en) * 1993-02-12 1996-07-09 Data Card Corporation Magnetic multi-track read/write head with recessed core gap structure and shield arrangement

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0166818A1 (en) * 1984-06-04 1986-01-08 Siemens Aktiengesellschaft Layer-built magnetic head for a recording medium to be perpendicularly magnetized
JPS61292214A (en) * 1985-06-18 1986-12-23 Matsushita Electric Ind Co Ltd Magnetic head
US5535078A (en) * 1993-02-12 1996-07-09 Data Card Corporation Magnetic multi-track read/write head with recessed core gap structure and shield arrangement

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