Zone texturing method for a magnetic recording disk

Details Zone texturing method for a magnetic recording disk Zone texturing method for a magnetic recording disk

1994-11-18

1995-09-05

Pianalto, Bernard

Coating processes

Magnetic base or coating

427256, 4274432, B05D 512

Patent

active

054477468

ABSTRACT:
A magnetic recording disk is zone-textured by using two or more tubular needles with outlets opening to its surface. While the disk is rotated around its center axis, different coating materials such as solutions containing and not containing colloidal silica are passed through these needles and deposited through their outlets inside different zones on the disk surface. The needles are moved such that the radial distances of their outlets from the disk center vary within certain ranges corresponding to different zones such as the data and landing zones on the disk surface.

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