Appeal No. 2002-1788 Page 10
Application No. 09/217,667
As described above, the calibration is a set-up procedure. The calibration
may be updated continuously during actual document production. This
compensates for drift.
In recapitulation, Williams provides a calibration system for a deskewing and
registering device for an electrophotographic printing machine. The method includes
a.) moving a sheet from a first position to a second position along a paper path;
b.) sensing the position of the sheet at the first position and the second position;
c.) choosing a correction value to cause the sheet to change a lateral position from the
first position to the second position; and
d.) repeating the moving, sensing, and choosing steps until a predetermined adjustment
is made when moving the sheet from the first position to the second position to
determine a proper calibration value.
In the anticipation rejection before us in this appeal, the examiner read claims 1
to 7, 9, 11, 12, 14 to 16, 18 to 21, 23, 24 and 40 to 46 on Williams as follows:
Williams et al. ('514) disclose a friction drive apparatus comprising a first
friction wheel (116), a second friction wheel (114), a first and second motor drive,
not shown, a processor for controlling the first and second motor drives
independently at different speeds to correct a skewed feeding strip material and
a detection sensor (134) and second sensor (130) disposed upstream and
downstream of the first and second friction wheels (114, 116) for monitoring
lateral position of said strip material (11). Williams et al. ('514) discloses a
method of using the friction drive including sensing an initial position of the strip
material (11) with the detection sensor (134) and the second and third lateral
sensors (130, 132), moving the strip material (11) forward a predetermined
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