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Geometry effects for printing final servo patterns on perpendicular disks

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1 Author(s)

Magnetic transfer or printing of servo patterns onto magnetic disks using a master having permeable elements in a nonmagnetic carrier was proposed by Bernard and Buslik in 1975. The method was advanced by development of automated machines that can print the surface of a disk in six seconds. Longitudinal media was used for the first HDDs manufactured with printed disks. Longitudinal is more effective to apply than a perpendicular field to the master and slave combination. This paper presents calculations for perpendicular fields applied to masters with various geometries. Also, summaries of the resulting field components for a range of practical dimensions show the difficulties of this "obvious" approach.

Published in:

INTERMAG Asia 2005. Digests of the IEEE International Magnetics Conference, 2005.

Date of Conference:

4-8 April 2005