Coating processes – Measuring – testing – or indicating
Patent
1992-02-12
1994-06-07
Beck, Shrive
Coating processes
Measuring, testing, or indicating
118672, 118687, 118 33, 118712, 226 44, B65H 23188
Patent
active
053187962
ABSTRACT:
A method and apparatus is provided for controlling the speed of a slave drive roller in a coating machine. Speed of the slave drive roller at a second coater is regulated by an adaptive gain allowing greater tolerances when not at run speed. That is, in addition to normal speed correction, the system accommodates greater web speed fluctuation during threadup, acceleration, and deceleration. This accommodation may be based on the sensed position of the float roller or, alternatively, on the sensed rate of acceleration/deceleration of the master drive roller.
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Ehnot Raymond A.
Puckhaber Charles F.
Torpey William A.
Bareford Katherine A.
Beck Shrive
Eastman Kodak Company
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