Servo write head having plural spaced front blocks coupled by magnetic posts to a back bar
AssigneeImation Corp.
InventorStephen J. Rothermel
Life of this patent
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Abstract
An assembly comprises a plurality of laterally spaced front blocks, a magnetic post coupling each of the front blocks to a common back bar, and a common front bar magnetically coupled to the back bar. A write gap spacer is positioned between the front bar and each of the plurality of front blocks, and a write gap element comprising write gaps couples the front bar to each front block across the write gap spacer. A coil is configured to generate magnetic flux in each magnetic post, and the front blocks are configured to direct the magnetic flux across the write gaps.
Claims20
An assembly comprising:
- a plurality of laterally spaced front blocks;
- a magnetic post coupling each of the front blocks to a back bar;
- a front bar magnetically coupled to the back bar;
- a write gap spacer positioned between the front bar and each of the plurality of front blocks;
- a write gap element coupling the front bar to each front block across the write gap spacer, the write gap element comprising write gaps;
- and
- a coil configured to generate magnetic flux in each magnetic post, wherein the front blocks direct the magnetic flux across the write gaps of each write gap element.
A magnetic head comprising:
- a plurality of laterally spaced front blocks, wherein each of the laterally spaced front blocks is magnetically coupled to a write gap element having at least two write gaps;
- a plurality of vias coupling the plurality of laterally spaced front blocks to a back bar;
- a plurality of coils for generating magnetic flux in the vias, wherein the plurality of laterally spaced front blocks direct the flux from the vias across the write gap elements;
- and
- a front bar forming a return path for the magnetic flux, wherein the front bar couples each of the write gap elements to the back bar.
A system comprising:
- a magnetic medium;
- and
- a magnetic head facing the magnetic medium, the magnetic head comprising:
- a plurality of write gap elements spaced laterally across the magnetic medium, each of the write gap elements comprising at least two write gaps;
- a plurality of front blocks spaced laterally across the magnetic medium, each of the front blocks coupled to one of the write gap elements;
- each of the front blocks coupled to a corresponding via coupled to a back bar;
- each via coupled to a corresponding coil configured to generate magnetic flux;
- and
- a front bar coupling the back bar to each of the front blocks, wherein the front bar provides a return path for the magnetic flux from each via across each of the write gap elements to the back bar.
Dependencies are inferred from the claim text.