JPS6457408A - Magnetic head - Google Patents

Magnetic head

Info

Publication number
JPS6457408A
JPS6457408A JP21273587A JP21273587A JPS6457408A JP S6457408 A JPS6457408 A JP S6457408A JP 21273587 A JP21273587 A JP 21273587A JP 21273587 A JP21273587 A JP 21273587A JP S6457408 A JPS6457408 A JP S6457408A
Authority
JP
Japan
Prior art keywords
magnetic
superconductive
head
magnetic flux
narrowing
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
JP21273587A
Other languages
Japanese (ja)
Inventor
Kunio Matsumoto
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 JP21273587A priority Critical patent/JPS6457408A/en
Publication of JPS6457408A publication Critical patent/JPS6457408A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To execute the rapid improvement of a recording density by making a part or approximately all parts of the magnetic circuit of a magnetic head into a magnetic shield with a superconductive material and narrowing a head tip part in a pin hole or slit shape. CONSTITUTION:A main magnetic pole 10 of a single magnetic pole shape head for vertical recording and a superconductive coil 30 are shielded by a superconductive magnetic shield 40. Consequently, the magnetic flux leakage is prevented by a complete countermagnetic effect and by narrowing the magnetic path at a head tip part, the high centralization of the magnetic flux can be executed. At the tip of the superconductive magnetic shield 40 a pin hole or a slit-shaped hole is made, most of the magnetic flux excited by the superconductive coil 30 is centralized and injected from the clearance. Thus, the centralized and injected high density magnetic flux can centralize and penetrate to the ultra-micro area and a recording density can be rapidly improved.
JP21273587A 1987-08-28 1987-08-28 Magnetic head Pending JPS6457408A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP21273587A JPS6457408A (en) 1987-08-28 1987-08-28 Magnetic head

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP21273587A JPS6457408A (en) 1987-08-28 1987-08-28 Magnetic head

Publications (1)

Publication Number Publication Date
JPS6457408A true JPS6457408A (en) 1989-03-03

Family

ID=16627565

Family Applications (1)

Application Number Title Priority Date Filing Date
JP21273587A Pending JPS6457408A (en) 1987-08-28 1987-08-28 Magnetic head

Country Status (1)

Country Link
JP (1) JPS6457408A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0389222A2 (en) * 1989-03-20 1990-09-26 Hitachi, Ltd. Magnetic head and magnetic recording apparatus
JP2008168412A (en) * 2007-01-15 2008-07-24 Nippon Telegr & Teleph Corp <Ntt> Screw fastening device and fastening method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0389222A2 (en) * 1989-03-20 1990-09-26 Hitachi, Ltd. Magnetic head and magnetic recording apparatus
EP0389222A3 (en) * 1989-03-20 1992-03-04 Hitachi, Ltd. Magnetic head and magnetic recording apparatus
JP2008168412A (en) * 2007-01-15 2008-07-24 Nippon Telegr & Teleph Corp <Ntt> Screw fastening device and fastening method

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