Back to results
US 5,962,188 AGranted
Direct write lithographic printing plates
AssigneeKodak Polychrome Graphics LLC
InventorsCharles D. DeBoer, Judith L. Fleissig
Life of this patent
Estimating the term…
Abstract
A direct write lithographic printing plate comprises a support, a melanaphilic layer, a melanophobic layer with a non-ionic crosslinker and a melanophobic layer with an ionic crosslinker. The plates are long running plates,
Claims21
A lithographic printing plate comprising:
- a) a support web,
- b) a coextensive melanophilic photothermal conversion layer coated on said web and
- c) a coextensive melanophobic layer comprising a crosslinked polymeric matrix containing a colloid of
- (1) an oxide of a metal selected from the group consisting of beryllium, magnesium, aluminum, silicon, gadolinium, arsenic, indium, tin, antimony, tellurium, lead, bismuth, and transition metals;
- (2) hydroxytitanium;
- (3) hydroxyaluminum;
- or
- (4) hydroxyzirconium;
- said layer also comprising a non-ionic crosslinker and
- d) an additional coextensive melanophobic layer comprising a crosslinked polymeric matrix containing a colloid of
- (1) an oxide of a metal selected from the group consisting of beryllium, magnesium, aluminum, silicon, gadolinium, arsenic, indium, tin, antimony, tellurium, lead, bismuth, and transition metals;
- (2) hydroxytitanium;
- (3) hydroxyaluminum;
- or
- (4) hydroxyzirconium;
- said layer also comprising a crosslinker where the crosslinking agent contains ionic groups.
13 more elements
Dependencies are inferred from the claim text.