Storage device including a center tapped write transducer

Details Storage device including a center tapped write transducer Storage device including a center tapped write transducer

2006-10-10

2006-10-10

Tupper, Robert S. (Department: 2627)

Dynamic magnetic information storage or retrieval

Head

Head accessory

Reexamination Certificate

active

07119990

ABSTRACT:
A head for use in a drive includes a heating element capable of generating heat sufficient to cause the head to have a shape that is similar or identical to the shape that the head has when performing an operation (e.g. writing) on a recording medium in the drive. The heating element is activated when the operation is not being performed. Hence, a head generates the same amount (or similar amount) of heat and is therefore at the same temperature (also called “operating temperature”), regardless of whether or not an operation (such as writing) is being performed. Therefore, the head maintains a fixed shape or has a shape that varies minimally, within a predetermined range around the fixed shape, that in turn results in maintaining fly height (distance between the head and the recording medium). The heating element may be implemented to use loss mechanisms inherent in a write transducer, e.g. by providing a center tap to the write transducer. When using a center tapped write transducer, currents in phase with one another are provided to perform a write operation. When not performing the write operation, the same currents are provided, but out of phase.

REFERENCES:
patent: 4551772 (1985-11-01), Sliger
patent: 4816932 (1989-03-01), Yates
patent: 5072324 (1991-12-01), Lin et al.
patent: 5142425 (1992-08-01), Gailbreath et al.
patent: 5668676 (1997-09-01), Voorman et al.
patent: 5790336 (1998-08-01), Voorman et al.
patent: 2001/0036028 (2001-11-01), Putnam et al.

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