B - Operations – Transporting – 41 – J
Patent
B - Operations, Transporting
41
J
B41J 13/22 (2006.01) H04N 1/08 (2006.01)
Patent
CA 2148566
In high speed laser imaging, it is important to ensure that the film medium is properly aligned on the rotary support drum to prevent errors in the images obtained. This is achieved in one embodiment by a clamping mechanism which includes a pivotal clamp that has a center of gravity which pivots as the drum is rotated to drive the clamping edge thereof against the medium and the drum with a force which corresponds to the centrifugal acceleration of the drum. The centrifugal clamp is constructed so that it will not bend or push the medium away from the clamp's pivot axis to thereby cause the medium to otherwise buckle or bulge from its precision wrapped position. In another embodiment, the clamp is constructed to pull the edge of the medium toward its pivot axis so as to cinch the sheet on the drum surface and thereby even more securely wrap the medium on the drum.
Rosenthal Richard A.
Whiteside George D.
Polaroid Corporation
Sim & Mcburney
LandOfFree
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