Relief printing plate manufacture

Details Relief printing plate manufacture Relief printing plate manufacture

G - Physics

03

F

96/252

G03F 7/20 (2006.01)

Patent

CA 1328049

A B S T R A C T "IMPROVEMENTS RELATING TO RELIEF PRINTING PLATE MANUFACTURE" A relief flexographic printing plate is prepared by image-wise exposure of the "printing face" of a layer of photocurable polymer through a negative 7 and image-wise back exposure of the layer 4 through a support sheet 3 and a positive 6 of the image to be printed, thereby selectively curing the floor regions 9 of the printing plate in register with the uncured areas 8 left in the printing face of said layer. Preferably a further non-selective back exposure operation is carried out for additionally curing the floor regions.

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