Browse Prior Art Database

Head Alignment

IP.com Disclosure Number: IPCOM000060859D
Original Publication Date: 1986-May-01
Included in the Prior Art Database: 2005-Mar-09
Document File: 1 page(s) / 11K

Publishing Venue

IBM

Related People

Goldstein, AD: AUTHOR [+2]

Abstract

U.S. Patent 4,458,274 describes a fixture for aligning the head of a flexible disk drive during manufacture of the drive. In that patent it is contemplated that the various mechanical forces applied to the disk drive undergoing head alignment be substantially identical to those which will subsequently occur when the finished disk drive is put into use. An example of one such force is the force by which the master disk is loaded onto the spindle of the disk drive undergoing alignment.

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Head Alignment

U.S. Patent 4,458,274 describes a fixture for aligning the head of a flexible disk drive during manufacture of the drive. In that patent it is contemplated that the various mechanical forces applied to the disk drive undergoing head alignment be substantially identical to those which will subsequently occur when the finished disk drive is put into use. An example of one such force is the force by which the master disk is loaded onto the spindle of the disk drive undergoing alignment. In accordance with the present disclosure a substantially completely manufactured disk drive, absent final attachment of its head, of course, is head- adjusted, and (1) the drive's collet mechanism is used to clamp the master disk to the drive's spindle, (2) the drive's pressure bail, or pad, is used to press the master disk down onto the head undergoing alignment, and (3) the disk drive's spindle motor is used to spin the master alignment disk. In this case it is necessary to provide a master alignment disk which not only carries the alignment data track, but also carries the position-information track. A fixture- mounted head then cooperates with the position-information track to provide the signals which are used to establish the ever-changing linear position alignment track.

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