Appeal No. 1999-0291
Application No. 08/646,077
provides a respective register mark error signal on a respective signal line.” Id. at column
4, lines 1-6.
Palmatier refers, in column 3, to U.S. patent 4,072,104 (Schaffer, of record) for
details of the mechanism for enabling angular adjustment of a plate cylinder relative to a
blanket cylinder, which corrects the “circumferential misregister” between the plate cylinder
and the blanket cylinder.
Each of the DC motors 34, 44, 54 may be actuated in either direction
for a predetermined time to adjust the angular position of the corresponding
one of the plate cylinders 31, 41, 51 relative to the angular position of the
corresponding one of the blanket cylinders 32, 42, 52. Thus, the plate
cylinders 31, 41, 51 are circumferentially adjusted relative to their respective
blanket cylinders 32, 42, 52 when the respective DC motors 34, 44, 54 are
operated.
Palmatier, column 3, lines 57-65.
According to the examiner, the detectors which sense the circumferential
misregister operate by “sens[ing] the time difference between two subsequent detections
of a registration mark on the web...[which is]...laid down on the web in Palmatier...by the
printing plate....” (See Answer, page 6.) “The control system 70 determines a speed
difference between the speed of the printing plate and a speed of the press in response to
the signals from the first detector and the second detector for subsequently controlling the
speed of the plate cylinder body which supports the printing plate so as to reduce the
speed difference.” (Id.)
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