Process for producing a magnetic read write head and head obtain

Details Process for producing a magnetic read write head and head obtain Process for producing a magnetic read write head and head obtain

1989-01-24

1990-10-16

Hoch, Raymond

Adhesive bonding and miscellaneous chemical manufacture

Delaminating processes adapted for specified product

Delaminating in preparation for post processing recycling step

20419232, 360122, 360123, 360125, 437228, G11B 5127, G11B 517, G11B 5187, B44C 122

Patent

active

RE0333832

ABSTRACT:
A first magnetic material film is deposited on a support, a groove is etched in the first magnetic film which is shaped like a figure eight, a double coil is formed and is wound respectively around the two central pole pieces. An insulating material layer is deposited and etched in step form, the step having a side facing the central channel. An [magnetic] amagnetic film is deposited on the thus etched step, and the film is etched so as to only leave a wall perpendicular to the plane of the films. This is followed by the deposition of a magnetic film and then a protective layer, the assembly being divided off so as to expose two pole pieces separated by an [air gap] amagnetic gap.

REFERENCES:
patent: 4025411 (1977-05-01), Hom-Ma et al.
patent: 4256514 (1981-03-01), Pogge
Fouchier, J., et al., Chemical Dictionary-Dictionaire de Chimie-Fachworterbuch fur Chemie, 2nd ed., NUP Amsterdam, 1961, p. 142.
IBM Technical Disclosure Bulletin, vol. 15, No. 2, Jul. 1972, pp. 516-517, Watrous, R. B., "Horizontal Thin-Film Head with Symmetrical Windings".
IBM Technical Disclosure Bulletin, vol. 21, No. 12, May 1979, p. 5002, Petersen, K. E., "Thin Film Magnetic Heads".
Patent Abstracts of Japan, vol. 4, No. 18 (E-171); Feb. 13, 1980, p. 35E171; and JP A 54-157,613 (Fujitsu K.K.), 12-12-79.
Patent Abstracts of Japan, vol. 4, No. 156 (P-34)[638], Oct. 31, 1980, p. 17P31; and JP A 55-105,817 (Fujitsu K.K.) 08-13-1980.
Patent Abstracts of Japan, vol. 5, No. 1 (P-43)[673], Jan. 8, 1981; and JP A 55-132,159 (Fijitsu K.K.) 10-15-1980.
Patent Abstracts of Japan, vol. 5, No. 5 (P-44)[677], Jan. 14, 1981; and JP A 55-135,321 (Fijitsu K.K.), 10-22-1980.
Patent Abstracts of Japan, vol. 5, No. 138 (P-78)[810], Sep. 2, 1981; and JP A 56-74812 (Nippon Denshin Denwa Kosha).
Patent Abstracts of Japan, vol. 6, No. 183 (P-143[1061], Sep. 18, 1982; and JP A 57-98,118 (Fujitsu K.K.) 06-18-1982.
Soviet Inventions Illustrated, Section EL, semaine CO6, Mar. 19, 1980; and SU A 662-961.
Patent Abstracts of Japan, vol. 5, No. 150 (P-81)[822], Sep. 22, 1981; and JP A 56-83823 (Fujitsu K.K.) 07-08-1981.

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