Diagnostic disk for checking the head alignment of magnetic disk drives
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Sep 15, 1987
Grant Date -
N/A
app pub date -
Feb 10, 1986
filing date -
Feb 8, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method and apparatus for checking the azimuthal alignment of the magnetic head of a disk drive with respect to a standard head alignment by use of diagnostic disk having plural sectors along a checking track. The sectors include an identification field, a data field and noise areas adjacent to the data field. The patterns recorded in the respective data field and adjacent noise fields being at relative azimuthal angles.
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