CHEMICAL IMAGING OF A LITHOGRAPHIC PRINTING PLATE.

摘要

A process for forming a lithographic printing plate (6) with a latent image (8), wherein the printing plate having a coating containing diazo resins. An ink jet printer is used to apply micro drops of a basic chemical solution that insolubilizes the affected areas of the coating to a developing solution. The latent image may be cured by heating the plate for a short period of time, is then developed to form the image (10). The process works with conventional, commercially available lithographic plates and developers.