JPS6435705A - Production of core for composite type magnetic head - Google Patents

Production of core for composite type magnetic head

Info

Publication number
JPS6435705A
JPS6435705A JP19146187A JP19146187A JPS6435705A JP S6435705 A JPS6435705 A JP S6435705A JP 19146187 A JP19146187 A JP 19146187A JP 19146187 A JP19146187 A JP 19146187A JP S6435705 A JPS6435705 A JP S6435705A
Authority
JP
Japan
Prior art keywords
magnetic
width control
track width
metallic materials
gap
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.)
Granted
Application number
JP19146187A
Other languages
Japanese (ja)
Other versions
JPH0622046B2 (en
Inventor
Motoichiro Matsuzawa
Nobuhiro Terada
Hideto Sandaiji
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.)
NGK Insulators Ltd
Original Assignee
NGK Insulators 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 NGK Insulators Ltd filed Critical NGK Insulators Ltd
Priority to JP19146187A priority Critical patent/JPH0622046B2/en
Publication of JPS6435705A publication Critical patent/JPS6435705A/en
Publication of JPH0622046B2 publication Critical patent/JPH0622046B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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  • Magnetic Heads (AREA)

Abstract

PURPOSE:To obtain a core for a magnetic head which exhibits excellent recording and reproducing characteristics even to a high-coercive force recording medium by embedding nonmagnetic materials into track width control grooves, then embedding prescribed magnetic metallic materials into track parts. CONSTITUTION:A 1st nonmagnetic material is packed into the butted and joined body of two ferrite blocks, by which a magnetic gap 6 having a prescribed spacing is formed. The 2nd nonmagnetic material 14 is embedded into the track width control grooves 10 formed in the direction orthogonal with the magnetic gap. Only the ferrite part near the gap 6 is removed and the magnetic metallic materials 26 is packed therein, following which medium traveling faces 16 are exposed by polishing, etc. Finally, the block is cut in the sections of the track width control grooves 10, by which the cores are obtd. The magnetic metallic materials are thereby made to exist only near the magnetic gap or in extremely small part of the medium traveling face and the loss of eddy current is decreased.
JP19146187A 1987-07-30 1987-07-30 Manufacturing method of core for composite type magnetic head Expired - Lifetime JPH0622046B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP19146187A JPH0622046B2 (en) 1987-07-30 1987-07-30 Manufacturing method of core for composite type magnetic head

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP19146187A JPH0622046B2 (en) 1987-07-30 1987-07-30 Manufacturing method of core for composite type magnetic head

Publications (2)

Publication Number Publication Date
JPS6435705A true JPS6435705A (en) 1989-02-06
JPH0622046B2 JPH0622046B2 (en) 1994-03-23

Family

ID=16275027

Family Applications (1)

Application Number Title Priority Date Filing Date
JP19146187A Expired - Lifetime JPH0622046B2 (en) 1987-07-30 1987-07-30 Manufacturing method of core for composite type magnetic head

Country Status (1)

Country Link
JP (1) JPH0622046B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0264904A (en) * 1987-12-22 1990-03-05 Nec Kansai Ltd Manufacture of magnetic head
US5387958A (en) * 1992-06-30 1995-02-07 Sony Electronics, Inc. Electro-optical control of light attenuation in the optical path of a camera

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0264904A (en) * 1987-12-22 1990-03-05 Nec Kansai Ltd Manufacture of magnetic head
US5387958A (en) * 1992-06-30 1995-02-07 Sony Electronics, Inc. Electro-optical control of light attenuation in the optical path of a camera

Also Published As

Publication number Publication date
JPH0622046B2 (en) 1994-03-23

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