Method for making a thin film magnetic head

Details Method for making a thin film magnetic head Method for making a thin film magnetic head

1987-11-20

1989-08-29

Simmons, David

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

29603, 51165R, 156154, 360126, G11B 5127

Patent

active

048613983

ABSTRACT:
DC bias currents are applied to a conducting wire of a thin film magnetic head to be inspected. When the DC bias currents (I.sub.0, I.sub.1, I.sub.2) are supplied to the conducting wire, the impedances (Z.sub.0, Z.sub.1, Z.sub.2) corresponding to the DC bias currents are measured. When a ratio (.vertline.Z.sub.1 -Z.sub.0 .vertline./.vertline.Z.sub.2 -Z.sub.0 .vertline.) corresponding to an overwrite characteristic (OW) reaches to a predetermined value by lapping tip portions of an upper magnetic layer and a lower magnetic layer of the magnetic head, the lapping process of the magnetic head is finished.

REFERENCES:
patent: 3967368 (1976-07-01), Brook et al.
patent: 4155106 (1979-05-01), Muraoka
patent: 4423550 (1984-01-01), Fujioka
patent: 4675986 (1987-06-01), Yen
patent: 4689877 (1987-09-01), Church
patent: 4727643 (1988-03-01), Schewe et al.
patent: 4739562 (1988-04-01), Kracke et al.

Affiliated with

Also associated with

Rating

Method for making a thin film magnetic head 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 making a thin film magnetic head, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for making a thin film magnetic head will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2235813