Patent ID: 6210644
Filing Date: 2001-04-03
Classification: D21F

Abstract:
A collimator, in combination with a source of curing radiation and a working surface, for use in a process for curing a photosensitive resin disposed on the working surface, wherein the working surface is structured and configured to move in a machine direction relative to said collimator and has a cross-machine direction perpendicular to said machine direction, the collimator comprising a plurality of discrete collimating elements spaced from one another at a distance in the cross-machine direction within an open area through which said curing radiation is capable of reaching said photosensitive resin to cure it, each of said collimating elements being substantially perpendicular to said working surface, wherein at least one pair of mutually adjacent collimating elements form a machine directional clearance A and a cross-machine directional clearance B between said two mutually adjacent collimating elements, said machine-directional clearance A being greater than said cross-machine directional clearance B.