Method for achieving the planar surface of an active face for a

Details Method for achieving the planar surface of an active face for a Method for achieving the planar surface of an active face for a

1989-06-16

1990-07-10

Hall, Carl E.

Metal working

Method of mechanical manufacture

Electrical device making

360122, G11B 542

Patent

active

049398350

ABSTRACT:
A method for achieving the planar surface of an active face for magnetic recording/reading heads. The planar surface of the active face is obtained by grinding, the active face being of the type where, before the grinding operation, the level of the material forming the gap is recessed with respect to the magnetic poles, the method comprising depositing over the recess a thin layer of non-magnetic material with a thickness at least equal to the recess of the gap. The non-magnetive thin layer may then be ground to obtain the planar surface of the active face.

REFERENCES:
patent: 3104455 (1963-09-01), Frost
patent: 3229355 (1966-01-01), Hluszko
patent: 3486220 (1969-12-01), Braun et al.
patent: 3614831 (1971-10-01), Grundtner et al.
patent: 4675988 (1987-06-01), Matsuzawa
patent: 4821403 (1989-04-01), Rolland et al.
Patent Abstracts of Japan, vol. 7, No. 231 (P-229) [1376], 13 Oct. 1983; & Jp-A-58 121 120 (Hitachi Seisakusho K. K.) 19-07-1983.
Xerox Disclosure Journal, vol. 9, NO. 4, Juillet/Aout 1984, pp. 235-236, Stamford, Conn., US: M. R. Campanelli: "Silicon-Sealed, Thin-Film Magnetic Head Image Bar" p. 236.
Patent Abstracts of Japan, vol. 5, No. 150 (P-81) [822], 22 Sep. 1981; & JP-A-56 83 869 (Fujitsu K. K.) 08-07-1981.

Affiliated with

Also associated with

Rating

Method for achieving the planar surface of an active face for a does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for achieving the planar surface of an active face for a , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for achieving the planar surface of an active face for a will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1714131