Method of producing a negative-pressure type magnetic head slide

Details Method of producing a negative-pressure type magnetic head slide Method of producing a negative-pressure type magnetic head slide

1991-03-20

1992-04-14

Powell, William A.

Adhesive bonding and miscellaneous chemical manufacture

Delaminating processes adapted for specified product

Delaminating in preparation for post processing recycling step

156636, 156645, 156651, 1566591, 156667, B44C 122, C23F 100

Patent

active

051044838

ABSTRACT:
A magnetic head slider having an operating surface on which are formed a pair of air-bearing portions extending in a direction of flow of an air stream into a flying height between the head slider and a recording medium, a cross rail extending between the air-bearing portions, and a pressure-reducing portion formed between the air-bearing portions and downstream of the cross rail. The air-bearing portions, cross rail and pressure-reducing portions cooperate to maintain the amount of the flying height at an optimum value. The slider uses a ferrite single crystal which provides at least the operating surface and which have crystal faces oriented such that the (111) plane of the crystal is not a plane which is parallel to the extension of the downstream edge line of the cross rail, or such that the (111) plane is parallel to the extension of the downstream edge line of the cross rail and is inclined at an angle of at least 60.degree. with respect to the operating surface. The operating surface is formed by chemical etching through an etching mask, by using an aqueous phosphoric acid solution.

REFERENCES:
patent: 4218715 (1980-08-01), Garnier
patent: 4420780 (1983-12-01), Deckert
patent: 4475135 (1984-10-01), Warner et al.
patent: 4644641 (1987-02-01), Verdone
patent: 4814915 (1989-03-01), Wada et al.
patent: 4875970 (1989-10-01), Takeya et al.
patent: 4878004 (1988-11-01), Akiho et al.

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