Head floating amount control method and unit, storage...

Details Head floating amount control method and unit, storage... Head floating amount control method and unit, storage...

2006-09-18

2008-10-14

Sniezek, Andrew L. (Department: 2627)

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

C360S031000, C360S025000

Reexamination Certificate

active

07436619

ABSTRACT:
A head floating amount control unit control a head floating amount of each of a plurality of heads respectively having a heater, with respect to a recording medium, by detecting contact between each head and a corresponding recording medium by detecting a thermal asperity or a read error, and judging a heating amount of the heater at a time when the contact is detected as a state where the head floating amount is zero, and controlling the head floating amount of each head to an optimum head floating amount based on a relationship of the heating amount of the heater and an amount of thermal expansion of each head.

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