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US 8,508,887 B2Granted
Reducing recession by heating a magnetic tape head
AssigneeHGST Netherlands B.V.
InventorAlbert Wallash
Life of this patent
Estimating the term…
Abstract
A magnetic tape head including a transducer disposed between a substrate, a recession between the transducer and the substrate, where the recession is formed at least by wear from a magnetic tape. The magnetic tape head also includes a heater disposed in the transducer. The heater thermally expands the transducer at a particular location such that the recession is reduced at the particular location.
Claims11
A magnetic tape head comprising:
- a transducer disposed between a first substrate and a second substrate;
- a recession between said transducer and said substrates, wherein said recession is formed at least by wear from a magnetic tape;
- a first heater disposed in said transducer and located an equal distance from said first and second substrates, wherein said first heater thermally expands said transducer at a particular location and said first heater thermally changes a contour of said transducer such that said recession is reduced at said particular location;
- a second heater disposed in said transducer and located an equal distance from said first substrate and from said first heater, wherein said second heater thermally expands said transducer at a particular location and said second heater thermally changes a contour of said transducer such that said recession is reduced at said particular location;
- a third heater disposed in said transducer and located an equal distance from said second substrate and from said first heater, wherein said third heater thermally expands said transducer at a particular location and said third heater thermally changes a contour of said transducer such that said recession is reduced at said particular location;
- and
- two leads for connecting all of said first, second and third heaters of said magnetic tape head in a series.
4 more elements
A magnetic tape drive comprising:
- a transducer disposed between a first and second substrate;
- a magnetic tape;
- a recession between said transducer and said substrates, wherein said recession is formed at least by wear from said magnetic tape;
- a first heater disposed in said transducer and located an equal distance from said first and second substrates, wherein said first heater thermally expands said transducer at a particular location and said first heater thermally changes a contour of said transducer such that said recession is reduced at said particular location;
- a second heater disposed in said transducer and located an equal distance from said first substrate and from said first heater, wherein said second heater thermally expands said transducer at a particular location and said second heater thermally changes a contour of said transducer such that said recession is reduced at said particular location;
- a third heater disposed in said transducer and located an equal distance from said second substrate and from said first heater, wherein said third heater thermally expands said transducer at a particular location and said third heater thermally changes a contour of said transducer such that said recession is reduced at said particular location;
- and
- two leads for connecting all of said first, second and third heaters of said transducer in a series.
5 more elements
A method for controlling recession in a magnetic tape head due to wear, said method comprising:
- providing a first heater disposed in a transducer and located an equal distance from a first and second substrate, wherein said first heater thermally expands said transducer at a particular location and said first heater thermally changes a contour of said transucer such that said recession is reduced at said particular location;
- providing a second heater disposed in said transducer and located an equal distance from said first substrate and from said first heater, wherein said second heater thermally expands said transducer at a particular location and said second heater thermally changes a contour of said transducer such that said recession is reduced at said particular location;
- providing a third heater disposed in said transducer and located an equal distance from said second substrate and from said first heater, wherein said third heater thermally expands said transducer at a particular location and said third heater thermally changes a contour of said transducer such that said recession is reduced at said particular location;
- providing two leads for connecting all of said first, second and third heaters of said magnetic tape head in a series;
- heating said transducer by said first, second and third heaters in said transducer;
- and
- thermally expanding said transducer at at least one of said particular locations associated with one of said first, second or third heaters on said transducer and changing a contour of said transducer such that a recession between said transducer and said substrates is overcome at at least one of said particular locations associated with one of said first, second and third heaters on said transducer.
4 more elements
Dependencies are inferred from the claim text.