Patent ID: 6096473
Filing Date: 2000-08-01
Classification: B41B,B41C,G03F,G06K,Y10S

Abstract:
A method for making a lithographic printing plate having improved lithographic printing properties such as good ink acceptance and high printing endurance, comprising the steps of:image-wise exposing by means of a high intensity short time scanning exposure an imaging element comprising at least a support layer, a silver halide emulsion layer and a development nuclei layer, said step of image-wise exposing includes adjusting a focus of a focal point of the high intensity short time scanning exposure according to different thicknesses of the imaging element so as to be substantially within the silver halide emulsion layer of the imaging element; anddeveloping a resulting image-wise exposed imaging element in a developing agent to result in said lithographic printing plate, wherein said step of focusing the high intensity short time scanning exposure substantially within the silver halide emulsion layer of the imaging element results in said improved lithographic printing properties of said printing plate.