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US 8,027,124 B2Granted
Magnetic head
AssigneeInternational Business Machines Corporation
InventorsRobert Glenn Biskeborn, Calvin Shyhjong Lo
Life of this patent
Estimating the term…
Abstract
A system in one embodiment includes first and second modules, each module having a substrate, a closure, and a gap situated therebetween, the gap comprising transducers selected from readers and writers; wherein the closures face each other, wherein the closure and the substrate of each module form a flat tape bearing surface, wherein a module spacing is defined as a distance from a point proximate to the transducers in the gap of the first module to a point proximate to the transducers in the gap of the second module, wherein the module spacing is less than 1.3 mm and greater than 0 mm.
Claims20
A system, comprising:
- first and second modules, each module having a substrate, a closure, and a gap situated therebetween, the gap comprising transducers selected from readers and writers;
- wherein the closures face each other,
- wherein the closure and the substrate of each module form a flat tape bearing surface,
- wherein a module spacing is defined as a distance from a point proximate to the transducers in the gap of the first module to a point proximate to the transducers in the gap of the second module,
- wherein the module spacing is less than 1.3 mm and greater than 0 mm,
- wherein an internal wrap angle of each module is defined between a plane extending along the tape bearing surface thereof and the tape extending between the modules, wherein the internal wrap angle is about 0.8 degrees or less.
3 more elements
A system, comprising:
- first and second modules, each module having a substrate, a closure, and a gap situated therebetween, the gap comprising transducers selected from readers and writers;
- wherein the closures face each other,
- wherein the closure and the substrate of each module form a flat tape bearing surface,
- wherein a module spacing is defined as a distance from a point proximate to the transducers in the gap of the first module to a point proximate to the transducers in the gap of the second module,
- wherein the module spacing is less than 1.3 mm and greater than 0 mm,
- wherein the module spacing is not greater than about ¼ of a write width divided by a tangent of a maximum tape skew angle defined as an angle between a line crossing through counterpoints of the writer on the first module and the reader on the second module and a line parallel to an edge of a track written on a tape at maximum skew.
3 more elements
A system, comprising:
- first and second modules, each module having a substrate, a closure, and a gap situated therebetween, the gap comprising transducers selected from readers and writers;
- wherein the closures face each other,
- wherein the closure and the substrate of each module form a flat tape bearing surface,
- wherein a module spacing is defined as a distance from a point proximate to the transducers in the gap of the first module to a point proximate to the transducers in the gap of the second module,
- wherein the module spacing is less than 1.3 mm and greater than 0 mm,
- wherein a length of each closure as measured parallel to a direction of tape travel thereacross is between about 200 and about 300 microns.
3 more elements
A system, comprising:
- a first module having a substrate, a closure, and a gap situated therebetween, the gap comprising at least writers;
- a second module having a substrate, a closure, and a gap situated therebetween, the gap comprising at least readers aligned with the writers of the first module in a direction of tape travel thereacross for reading data tracks written by the writers;
- wherein the closures face each other,
- wherein the closure and the substrate of each module form a flat tape bearing surface,
- wherein a module spacing is defined as a distance from a point proximate to the transducers in the gap of the first module to a point proximate to the transducers in the gap of the second module,
- wherein the module spacing is less than 1.3 mm and greater than 0.5 mm,
- wherein an internal wrap angle of each module is defined between a plane extending along the tape bearing surface thereof and the tape extending between the modules, wherein the internal wrap angle is between about 0.3 degree and about 1.0 degree,
- wherein a length of each closure as measured parallel to a direction of tape travel thereacross is greater than a length of a tent of a tape passing thereover measured in the same direction.
5 more elements
Dependencies are inferred from the claim text.