Method and apparatus for texturing zones of a magnetic disk
AssigneeInternational Business Machines Corporation
InventorsNorman T. Gonnella, Steven F. Starcke
Life of this patent
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Abstract
A magnetic data storage disk includes a surface with a coarsely textured head landing zone and a finely textured data storage area. The coarse texture is applied over the fine texture in the landing zone without forming a step in elevation at the boundary. A method for texturing the magnetic disk includes first applying a fine texture to both the data storage area and the landing zone, and then applying a coarse texture to the landing zone only. Texturing apparatus includes peripheral disk clamps permitting axial compliant movement when the opposed disk surfaces are engaged by balanced, pneumatically biased abrading tools. A free abrasive slurry is introduced to pads carried by the tools.
Claims3
A method for texturing a data area and head landing zone of a magnetic surface of a magnetic disk, said method comprising the steps of:
- polishing a relatively fine texture pattern having a surface elevation upon both the data area and the head landing zone of the disk;
- and
- after said polishing step, further abrading only the head landing zone of the disk to make a relatively course texture pattern having peaks at substantially the same surface elevation as the relatively fine texture pattern.
Dependencies are inferred from the claim text.