Process for producing printing resin plates using liquid photosensitive resins

Claim 1

A process for producing a printing resin plate which comprises the steps of placing a negative film on a transparent plate positioned on a frame stand having a pair of horizontally separated spacers; applying a transparent cover film on said negative film; applying a liquid photopolymerizable resin on said cover film within the limits of said pair of horizontally separated spacers; applying a support on said photopolymerizable resin layer by introducing a support between the resulting assembly on said frame stand and a means having a belt that has been extended between at least two rolls thus having an upper surface and a lower surface and which can rotate synchronously with said frame stand and (1) moving said resulting assembly on said frame stand or (2) moving said means having a belt or (3) moving said resulting assembly on said frame stand and said means having a belt together, so that the assembly on said frame stand is moved to below the lower surface of the belt while pressing the support with the lower surface of the belt by the downward pressure thereof, thereby closely adhering the support onto said photopolymerizable resin layer; exposing said liquid photopolymerizable resin layer to light; removing the resulting photopolymerizable resin plate from said frame stand, and removing the unexposed areas from the resulting photopolymerized resin layer.