US 6,981,446 B2
Ink-jet imaging method
Kevin Barry Ray, Fort Collins, Colo. (US); and John Kalamen, Loveland, Colo. (US)
Assigned to Eastman Kodak Company, Rochester, N.Y. (US)
Filed on Jul. 08, 2003, as Appl. No. 10/615,002.
Prior Publication US 2005/0005795 A1, Jan. 13, 2005
Int. Cl. B41C 1/10 (2006.01)
U.S. Cl. 101—466 34 Claims
 
1. A method of forming an image on a printing plate precursor comprising:
providing a printing plate precursor comprising a substrate and a negative working oleophilic image forming layer applied onto the substrate, wherein the image forming layer comprises a polymeric binder consisting of polymeric material derived from phenol and a polymeric crosslinking material consisting of polymeric material derived from phenol;
imagewise contacting the image forming layer with a catalyst comprising an acid; and
thermally treating the image forming layer such that the polymeric material in imagewise contacted portions of the image forming layer undergoes a sufficient crosslinking reaction to cause the imagewise contacted portions of the image forming layer to become less developable in a developer liquid than portions of the image forming layer that are not contacted with the catalyst.