Thin magnetic film including multiple geometry gap structures on

Details Thin magnetic film including multiple geometry gap structures on Thin magnetic film including multiple geometry gap structures on

1997-06-25

1999-06-01

Miller, Brian E.

Dynamic magnetic information storage or retrieval

Head

Core

G11B 5147

Patent

active

059093463

ABSTRACT:
A thin film magnetic head assembly is provided which includes a plurality of thin film heads situated atop a common substrate. An insulative main body is built up layer by layer on the substrate. A plurality of magnetic yokes exhibiting different geometries are situated on the substrate and within the main body. The magnetic yokes are built up layer by layer at the same time that the insulative main body is fabricated. A plurality of coil structures are situated within the main body and are magnetically coupled to respective magnetic yokes. The head assembly also includes a pedestal of insulative material situated atop the main body and exhibiting a lateral dimension less than that of the main body. The pedestal protrudes upwardly away from the main body and substrate. The magnetic yokes each include a pole piece pair situated atop the pedestal, each pole piece pair including first and second magnetic pole pieces. Each pole piece pair exhibits a different geometry than another pole piece pair. Each pole piece pair forms a head which is adapted to reading/writing a track on a magnetic medium, the tracks of which are compatible with the geometry of that pole piece pair.

REFERENCES:
patent: 3723665 (1973-03-01), Lazzari et al.
patent: 4157616 (1979-06-01), Bischoff
patent: 4414554 (1983-11-01), Springer
patent: 4470051 (1984-09-01), Springer
patent: 4494125 (1985-01-01), Springer
patent: 4503439 (1985-03-01), Springer
patent: 4503440 (1985-03-01), Springer
patent: 4539280 (1985-09-01), Springer
patent: 4544421 (1985-10-01), Springer
patent: 4639289 (1987-01-01), Lazzari
patent: 4731157 (1988-03-01), Lazzari
patent: 4809103 (1989-02-01), Lazzari
patent: 4837924 (1989-06-01), Lazzari
patent: 4899434 (1990-02-01), Roberts
patent: 4901177 (1990-02-01), Lazzari
patent: 4912584 (1990-03-01), Mallary et al.
patent: 4942490 (1990-07-01), Lehureau
patent: 4949207 (1990-08-01), Lazzari
patent: 4970615 (1990-11-01), Gau
patent: 4984118 (1991-01-01), Springer
patent: 4992897 (1991-02-01), Deroux-Dauphin
patent: 5020212 (1991-06-01), Michijima et al.
patent: 5041932 (1991-08-01), Hamilton
patent: 5065271 (1991-11-01), Matsuura et al.
patent: 5073242 (1991-12-01), Hamilton
patent: 5090111 (1992-02-01), Lazzari
patent: 5111351 (1992-05-01), Hamilton
patent: 5122917 (1992-06-01), Springer
patent: 5123156 (1992-06-01), Meunier et al.
patent: 5155646 (1992-10-01), Fujisawa et al.
patent: 5163218 (1992-11-01), Hamilton
patent: 5166845 (1992-11-01), Thompson et al.
patent: 5168408 (1992-12-01), Lazzari
patent: 5175658 (1992-12-01), Chang et al.
patent: 5189580 (1993-02-01), Pisharody et al.
patent: 5195006 (1993-03-01), Morikawa
patent: 5196976 (1993-03-01), Lazzari
patent: 5198948 (1993-03-01), Stover et al.
patent: 5202863 (1993-04-01), Miyatake et al.
patent: 5208716 (1993-05-01), Lazzari
patent: 5216559 (1993-06-01), Springer
patent: 5224260 (1993-07-01), Fedeli et al.
patent: 5260845 (1993-11-01), Takayama et al.
patent: 5266409 (1993-11-01), Schmidt et al.
patent: 5274521 (1993-12-01), Miyauchi et al.
patent: 5285341 (1994-02-01), Suzuki et al.
patent: 5331494 (1994-07-01), Fukuda et al.
patent: 5384195 (1995-01-01), Bachmann et al.
patent: 5406434 (1995-04-01), Amin et al.
patent: 5406695 (1995-04-01), Amemori
patent: 5490028 (1996-02-01), Ang et al.
patent: 5563754 (1996-10-01), Gray et al.
patent: 5737825 (1998-04-01), Gray et al.
patent: 5748417 (1998-05-01), Malhotra et al.
patent: 5754377 (1998-05-01), Gray et al.
A. Sano, M. Egawa, M. Nitta, K. Takayanagi, T. Matsushita, and T. Fujita, A Low Inductance Metal-In-Gap Head Using a Side-Core Concept, .COPYRGT.1993, IEEE Transactions on Magnetics, vol. 29, No. 6, pp. 3888-3890.
K.L. Mittal, Factors Affecting Adhesion of Lithographic Materials, Solid State Technology, May 1979, pp. 89-100.
J.P. Lazzari and P. Deroux-Dauphin, A New Thin Film Head Generation IC Head, IEEE Transactions on Magnetics, vol. 25, No. 5, Sep. 1989, pp. 3173-3193.

Affiliated with

Also associated with

Rating

Thin magnetic film including multiple geometry gap structures on does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Thin magnetic film including multiple geometry gap structures on, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Thin magnetic film including multiple geometry gap structures on will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-959054