Pole design for thin film magnetic heads

Details Pole design for thin film magnetic heads Pole design for thin film magnetic heads

1989-05-26

1990-11-13

Heinz, A. J.

Dynamic magnetic information storage or retrieval

Head

Head surface structure

360126, G11B 5187

Patent

active

049706152

ABSTRACT:
A thin film magnetic head including top and bottom pole tips having reversed trapezoidal cross sections. Mirror image symmetry across a gap region may be achieved. The top and bottom pole tips may be formed using a photolithographic process using positive photoresist including post bake and flood exposure steps.

REFERENCES:
patent: 4434445 (1984-02-01), Van Herk
patent: 4443294 (1984-04-01), Suenage et al.
patent: 4700253 (1987-10-01), Gerber et al.
patent: 4701820 (1987-10-01), McClure
patent: 4710838 (1987-12-01), Jahnke
patent: 4799118 (1989-01-01), Yamada
T. Lwakura et al., Three Dimensional Simulation of Side Writing Field and Crosstalker for Thin Film Heads With Pole Shapes, International Conference on Magnetic, Apr. 1989, Washington, D.C.

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