Method for making a negative working, heat-sensitive...

Details Method for making a negative working, heat-sensitive... Method for making a negative working, heat-sensitive...

2007-03-27

2007-03-27

Gilliam, Barbara L. (Department: 1752)

Radiation imagery chemistry: process, composition, or product th

Imaging affecting physical property of radiation sensitive...

Making printing plates

C430S270100, C430S281100, C430S286100, C430S288100

Reexamination Certificate

active

11173325

ABSTRACT:
A method for making a heat-sensitive negative-working lithographic printing plate precursor is disclosed comprising the steps of(i) preparing a coating solution comprising hydrophobic thermoplastic polymer particles and a hydrophilic binder;(ii) applying said coating solution on a support having a hydrophilic surface or which is provided with a hydrophilic layer, thereby obtaining an image-recording layer;(iii) drying said image-recording layer;characterized in that said hydrophobic thermoplastic polymer particles have an average particle size in the range from 45 nm to 63 nm,and that the amount of said hydrophobic thermoplastic polymer particles in the image-recording layer is at least 70% by weight relative to the dried image-recording layer.

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