Systems and methods for in-situ recording head burnishing

Details Systems and methods for in-situ recording head burnishing Systems and methods for in-situ recording head burnishing

2007-09-05

2009-08-25

Robertson, David L (Department: 4123)

Data processing: generic control systems or specific application

Generic control system, apparatus or process

C451S011000, C451S041000, C029S603030

Reexamination Certificate

active

07580759

ABSTRACT:
Systems and methods are provided for burnishing a recording head in-situ in a magnetic recording disk drive. The burnishing process generates a tribocurrent, which is electricity generated by the rubbing of dissimilar materials. Different materials exhibit widely different tribocurrent characteristics while in sliding contact. The tribocurrent thus acts as an indicator of the particular materials of the recording head making contact with the magnetic recording media during different stages of the burnishing process. The tribocurrent is thus monitored to determine when it reaches a threshold value. The threshold value indicates that the burnishing has exposed a particular material of the recording head. Thus, the burnishing process may be stopped upon the tribocurrent reaching the threshold value so that the read sensor of the recording head is not burnished and inadvertently damaged.

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