Dynamic magnetic information storage or retrieval – Automatic control of a recorder mechanism – Controlling the head
Reexamination Certificate
2007-12-18
2007-12-18
Korzuch, William R. (Department: 2627)
Dynamic magnetic information storage or retrieval
Automatic control of a recorder mechanism
Controlling the head
C360S031000
Reexamination Certificate
active
11152912
ABSTRACT:
A method for simultaneously measuring contact potential and slider body clearance in a hard disk drive. In embodiments of the present invention, a plurality of direct current (DC) pulses are applied between a slider body and a hard disk of a magnetic disk drive. The contact potential voltage between the slider body and the hard disk is determined in response to applying the plurality of direct current (DC) pulses. The voltage of the plurality of direct current (DC) pulses is increased until a contact between the slider body and the hard disk is detected.
REFERENCES:
patent: 5136250 (1992-08-01), Abdelli
patent: 5153785 (1992-10-01), Muranushi et al.
patent: 5453884 (1995-09-01), Ohta et al.
patent: 6359746 (2002-03-01), Kakekado et al.
patent: 6529342 (2003-03-01), Feng et al.
patent: 6700724 (2004-03-01), Riddering et al.
patent: 6785081 (2004-08-01), Chapin et al.
patent: 7016139 (2006-03-01), Baumgart et al.
patent: 2003/0043497 (2003-03-01), Riddering et al.
patent: 2006/0002001 (2006-01-01), Fong et al.
patent: 57060566 (1982-04-01), None
patent: 62159385 (1987-07-01), None
patent: 3283152 (1991-12-01), None
patent: 5223781 (1993-08-01), None
patent: 5273276 (1993-10-01), None
patent: 9097483 (1997-04-01), None
“Non-Destructive Measurement of the Lubricant Distribution on Magnetic Disks” IBM TDB, Jul. 1985, pp. 695ff.
“Tribocharging of the magnetic hard disk drive head-disk interface” Journal of Applied Physics, vol. 91, No. 7, pp. 4631ff.
“Air Bearing Magnetic Head Slider Providing a Correlation Technique Between Readback Signal Modulation and Head-To-Disk Spacing Variation . . . ” IBM TDB, Dec. 19833, pp. 3364ff.
“Influence of Contact Potential on Slide-Disk Spacing: Simulation and Experiment” IEE Mag vol. 40, No. 4, pp. 3165ff.
Advances in Information Storage and Processing Systems, 1995 vol. 1, pp. 49ff (abstract only).
Baumgart Peter Michael
Duwensee Malk
Knigge Bernhard E.
Hitachi Global Storage Technologies - Netherlands B.V.
Korzuch William R.
Olson Jason
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