Appeal No. 2003-0212 Page 5
Application No. 09/089,053
peak amplitudes as one way of determining fly height. When the
magnetic transducer is in situ, the artisan would have understood
that the transducer is actually reading signals from a magnetic
disk in order to measure the fly height of the transducer. This
transducer produces the same transition signals in response to
magnetic information on the disk as the transducer disclosed by
appellants. Therefore, we do not agree with appellants’ argument
that the fly height in Meyer is based on temperature rather than
a transition signal. Once the fly height in Meyer is measured,
however, Meyer discloses that the fly height of the transducer is
temperature adjusted to determine what temperature is necessary
to achieve a different fly height than the nominally measured fly
height. We agree with the examiner that broadly speaking, this
requires that the measured fly height in Meyer be compared to a
desired fly height to determine the amount of temperature
compensation which is necessary. For example, Meyer discloses
that a transducer fly height might be measured at 2.9 microinches
although it is desired to use it at 0.5 microinches. The
temperature is adjusted to achieve the fly height of 0.5
microinches. Nevertheless, for purposes of the claimed
invention, the 2.9 microinches is the measured fly height and the
0.5 microinches is the threshold height. Meyer must make this
comparison in order to determine the amount of temperature
adjustment which is necessary to reach the threshold fly height.
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