Thermal slider level transfer curve tester for testing recording heads
AssigneeSeagate Technology LLC
InventorsTodd A. Luse, James R. Peterson, Thien T. Tu
Life of this patent
Estimating the term…
Abstract
A head testing apparatus is provided for testing a data recording head. The apparatus includes a test volume, a magnetic field source, a holder and a thermoelectric source. The test volume is adapted to receive the head, and the magnetic field source is positioned to generate a magnetic field within the test volume. The holder is adapted to hold the head and position the head within the test volume. The thermoelectric source is positioned to contact the head when the head is positioned within the test volume by the holder.
Claims26
A head testing apparatus for testing a data recording head, the apparatus comprising:
- a test volume adapted to receive the data recording head;
- a magnetic field source positioned to generate a magnetic field within the test volume;
- a holder adapted to hold the data recording head temporarily with a releasable connection and position the data recording head within the test volume;
- and
- a thermoelectric source positioned externally to the data recording head and positioned to contact the data recording head temporarily when the data recording head is positioned within the test volume by the holder.
A data recording head test fixture comprising:
- a nest having a releasable connection for holding a data recording head temporarily;
- and
- a thermoelectric source positioned relative to the nest such that the thermoelectric source contacts the data recording head when the data recording head is temporarily held within the nest.
A method of testing a magnetic data recording head comprising steps of:
- (a) positioning the data recording head relative to a magnetic field that is generated externally to the data recording head;
- (b) measuring a response of the data recording head to the magnetic field;
- and
- (c) inducing a localized temperature change in the data recording head by temporarily contacting the data recording head with a thermoelectric source and varying a temperature of the thermoelectric source while measuring the response in step (b).
A head testing apparatus for testing a magnetic data recording head, the apparatus comprising:
- a magnetic field source that is external to the data recording head;
- and
- means for releasably holding the data recording head relative to the magnetic field source, inducing a localized temperature change in the data recording head by temporarily contacting the data recording head with a thermoelectric source, and varying a temperature of the thermoelectric source while measuring a response of the data recording head to the magnetic field.
A data recording head test fixture comprising:
- a nest for holding a data recording head;
- and
- a thermoelectric source positioned relative to the nest such that the thermoelectric source contacts the data recording head when the data recording head is held within the nest, wherein the thermoelectric source comprises first and second current inputs and forms a heat source when a first current is applied to the first and second current inputs in a first direction and forms a heat sink when a second current is applied to the first and second current inputs in a second, opposite direction.
Dependencies are inferred from the claim text.