Title:
THIN-FILM MAGNETIC HEAD, PRODUCTION METHOD THEREFOR, AND MAGNETIC STORAGE UNIT
Document Type and Number:
WIPO Patent Application WO/2004/097805
Kind Code:
A1
Abstract:
A thin-film magnetic head (30) comprising a recording head (35) formed on a substrate (32), and a reproducing head (36) formed on the recording head (35), wherein the recording head (35) comprises a lower magnetic pole layer (38), an upper magnetic pole layer (41) magnetically connected with the lower magnetic pole layer (38) via a magnetic layer (40) and formed to face the lower magnetic pole layer (38) across a non-magnetic insulation films (39A), (39B), an upper tip-end sub-magnetic pole (42) magnetically connected with the upper magnetic pole layer (41) on an air bearing surface (33) side and having a width accommodating a recording track width, and a coil (43) formed between the lower magnetic pole layer (38) and the upper magnetic pole layer (41). The coil (43) is formed in a single layer, and the lower magnetic pole layer (38) and the upper magnetic pole layer (41) are formed almost in parallel to each other. Heat generated from the coil (43) is conducted in the directions of the substrate (32), the air bearing surface (33) and the reproducing head (36) to be efficiently dissipated, thereby preventing failures due to heat.
Inventors:
YAMADA YUICHI (JP)
Application Number:
PCT/JP2003/005524
Publication Date:
November 11, 2004
Filing Date:
April 30, 2003
Export Citation:
Assignee:
FUJITSU LTD (JP)
YAMADA YUICHI (JP)
YAMADA YUICHI (JP)
International Classes:
G11B5/31; G11B5/40; (IPC1-7): G11B5/31
Foreign References:
| JPS60177420A | 1985-09-11 | |||
| JPH1074307A | 1998-03-17 | |||
| JPH11232614A | 1999-08-27 | |||
| JP2000149218A | 2000-05-30 | |||
| JPS5712409A | 1982-01-22 | |||
| JPH0479007A | 1992-03-12 | |||
| JPH11283221A | 1999-10-15 |
Attorney, Agent or Firm:
Itoh, Tadahiko (Yebisu Garden Place Tower 20-3, Ebisu 4-chom, Shibuya-ku Tokyo, JP)
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