Method and apparatus for producing a printing plate

Radiation imagery chemistry: process – composition – or product th – Imaging affecting physical property of radiation sensitive... – Making printing plates

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118401, 118407, 118410, 118411, 118412, 118413, 118120, 430306, G03C 500

Patent

active

044502265

ABSTRACT:
An apparatus and method is disclosed which will rapidly provide a uniform layer of photopolymerizable material for a printing plate. A regulated flow of liquid photopolymerizable resin is supplied from an external reservoir into a manifold which is approximately C-shaped in cross-section and has one at least partially open side face. A gate is disposed before the open side face of the manifold and this gate is vertically adjustable so that together the gate and open side face define an orifice slot or passageway from which a uniform curtain of the resin may flow onto a platemaking surface. The manifold member has a downward projecting wedge shaped lip which acts as a doctor blade on the liquid resin layer deposited as the manifold is moved across the plate-making surface.

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