Mechanism to shift the head span of a tape head at a wafer level
AssigneeInternational Business Machines Corporation
InventorsIcko E..T. Iben, Jason Liang, Hoodin Hamidi
Life of this patent
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Abstract
Provided are a magnetic tape head, a magnetic tape drive, and a computational device in which the magnetic tape head is comprised of a plurality of elements, wherein a pitch between adjacent elements of the plurality of elements is not identical. Selected elements of the plurality of elements that are shifted from a nominal position are selected in a symmetrical manner in the plurality of elements. A total of shifts of the elements of the plurality of elements that are shifted add up to a desired total shift to realign a plurality of modules, such that the median head span of each module type match as closely as possible to a desired value of a head span for all module types.
Claims15
A magnetic tape head, comprising:
- a plurality of modules comprising reader modules and writer modules;
- and
- a plurality of elements, wherein a pitch between adjacent elements of the plurality of elements is not identical, wherein selected elements of the plurality of elements that are shifted from a nominal position are selected in a symmetrical manner in the plurality of elements, and wherein a total of shifts of the elements of the plurality of elements that are shifted add up to a desired total shift to realign the plurality of modules, such that a median head span of each module type match as close as possible to a desired value of a head span for all module types including the reader modules and the writer modules and wherein the head span is shifted at a wafer level.
A magnetic tape drive, comprising:
- a receptacle for magnetic tape;
- and
- a magnetic tape head to read and write on the magnetic tape, the magnetic tape head, comprising:
- a plurality of modules comprising reader modules and writer modules;
- and
- a plurality of elements, wherein a pitch between adjacent elements of the plurality of elements is not identical, wherein selected elements of the plurality of elements that are shifted from a nominal position are selected in a symmetrical manner in the plurality of elements, and wherein a total of shifts of the elements of the plurality of elements that are shifted add up to a desired total shift to realign the plurality of modules, such that a median head span of each module type match as close as possible to a desired value of a head span for all module types including the reader modules and the writer modules and wherein the head span is shifted at a wafer level.
A computational device, comprising:
- a processor;
- a tape drive coupled to the processor;
- and
- a magnetic tape head in the tape drive to read and write on a magnetic tape in the tape drive, the magnetic tape head, comprising:
- a plurality of modules comprising reader modules and writer modules;
- and
- a plurality of elements, wherein a pitch between adjacent elements of the plurality of elements is not identical, wherein selected elements of the plurality of elements that are shifted from a nominal position are selected in a symmetrical manner in the plurality of elements, and wherein a total of shifts of the elements of the plurality of elements that are shifted add up to a desired total shift to realign the plurality of modules, such that a median head span of each module type match as close as possible to a desired value of a head span for all module types including the reader modules and the writer modules and wherein the head span is shifted at a wafer level.
Dependencies are inferred from the claim text.