Browse Prior Art Database

Landing Zone Texture By Air Brushing with Alumina Slurry

IP.com Disclosure Number: IPCOM000113692D
Original Publication Date: 1994-Sep-01
Included in the Prior Art Database: 2005-Mar-27
Document File: 2 page(s) / 32K

Publishing Venue

IBM

Related People

Gregory, TA: AUTHOR [+5]

Abstract

A method to texture the landing zone of a magnetic recording disk is disclosed. This method used a aspirating nozzle to direct small alumina particles to the landing zone of a rotating disk. This method is used in conjunction with a full surface texture to enhance both the mechanical and magnetic performances of the disk.

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Landing Zone Texture By Air Brushing with Alumina Slurry

      A method to texture the landing zone of a magnetic recording
disk is disclosed.  This method used a aspirating nozzle to direct
small alumina particles to the landing zone of a rotating disk.  This
method is used in conjunction with a full surface texture to enhance
both the mechanical and magnetic performances of the disk.

      In the Figure, the disk 1 is rotated about its center.  Mask 2
is positioned in front of the disk surface and at the outer radius of
the landing zone 3 to be textured.  The mask 2 protects the data
surface area from overspray and provides a sharp transition between
the two textured zones.  The aspirating spray nozzle 4 is directed
between the mask 2 and the inner diameter of the disk 1.  The nozzle
4 used compressed air to accelerate the alumina particles 5 to the
disk 1 surface.

      This sandblasting technique provides a uniform plastically
deformed crater like surface for the start/stop or landing zone of a
recording disk.