Browse Prior Art Database

Head Cleaning Method

IP.com Disclosure Number: IPCOM000117587D
Original Publication Date: 1996-Apr-01
Included in the Prior Art Database: 2005-Mar-31
Document File: 2 page(s) / 30K

Publishing Venue

IBM

Related People

Kiasaka, M: AUTHOR [+2]

Abstract

Disclosed is a method to burnish the particles on the surface of a magnetic head used in a hard disk drive. After flying for a while, particles may be stuck to the surface of the magnetic head, and the particles may fall onto the data area of a disk. If the head flies on the particle, the flying height of the head may change and read errors may occur.

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Head Cleaning Method

      Disclosed is a method to burnish the particles on the surface
of a magnetic head used in a hard disk drive.  After flying for a
while, particles may be stuck to the surface of the magnetic head,
and the particles may fall onto the data area of a disk.  If the head
flies on the particle, the flying height of the head may change and
read errors may occur.

      To avoid such errors, the head is moved to an unused area like
an inner crash stop position and the flying height of the head is
made lower by reducing rotational speed of a spindle motor.  Because
flying height is low, the particles on the head is burnished and
error caused by the particles will not occur.  The flow chart of the
method is shown in the Figure.  During execution of 4 or 8, the
burnish is done.