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US 5,207,759 AGranted
Texturing slurry and method
AssigneeHMT Technology Corporation
InventorsYassin Mehmandoust, Atef H. Eltoukhy, Abdoul H. Riahi-Samani
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Abstract
A method for texturing a disc substrate, and a particle slurry for use in the method. The slurry includes two populations of different-size particles, preferably one population containing particles in a 3 micron size range, and a second population containing particles in a 1 micron size range. The particles, when used to abrade the surface of a disc, create a surface texture characterized by a low peak/peak-to-valley ratio.
Claims3
A method of texturing a magnetic disc substrate comprising the steps of:
- applying to at least a portion of a surface of the substrate a slurry containing texturing particles, a total weight of said particles comprising between 10-40 weight percent of first texturing particles having sizes between about 2.5-3.5 microns and between 60-90 weight percent of second texturing particles having sizes between about 0.5 to 1.5 microns,
- pressing a texturing pad against the substrate in the presence of the slurry;
- and
- moving the pad relative to the substrate, and thereby scouring the substrate with the first and second particles of the slurry.
1 more element
Dependencies are inferred from the claim text.