Abstract: Disclosed is a method of making a lithographic printing plate which includes providing a lithographic printing plate precursor having a coating therein, image-wise exposing the coating, and developing the precursor. The coating includes (i) a contiguous photopolymerizable layer of a photopolymerizable composition or (ii) a contiguous intermediate layer with a photopolymerizable layer of a photopolymerizable composition thereon. The photopolymerizable composition includes a polymerizable compound, a polymerization initiator and a first polymer. The contiguous photopolymerizable layer or the contiguous intermediate layer also includes an adhesion promoting compound and a second polymer.

Abstract: A heat-sensitive imaging element includes an IR dye, and more particularly a heat-sensitive lithographic printing plate precursor includes the IR dye. A method for making the lithographic printing plate produces a print-out image of high contrast upon exposure to IR-radiation or heating.

Abstract: A heat-sensitive imaging element includes an IR dye having a structure according to Formula I, wherein at least one of the Rd groups is a group which is transformed by a chemical reaction, induced by exposure to IR-radiation or heat, into a group which is a stronger electron-donor than the Rd; or wherein at least one of the Ra groups is a group which is transformed by a chemical reaction, induced by exposure to IR-radiation or heat, into a group which is a stronger electron-acceptor than the Ra. The imaging element is able to form a visible print-out image with a high contrast directly after image-wise exposure by IR-radiation or heating.

Abstract: A heat-sensitive imaging element includes an IR dye having a structure according to Formula I, wherein at least one of the Rd groups is a group which is transformed by a chemical reaction, induced by exposure to IR-radiation or heat, into a group which is a stronger electron-donor than the Rd; or wherein at least one of the Ra groups is a group which is transformed by a chemical reaction, induced by exposure to IR-radiation or heat, into a group which is a stronger electron-acceptor than the Ra. The imaging element is able to form a visible print-out image with a high contrast directly after image-wise exposure by IR-radiation or heating.

Abstract: A method of making a lithographic printing plate comprising the steps of: a) providing a lithographic printing plate precursor comprising a support having a hydrophilic surface or which is provided with a hydrophilic layer, and a coating provided thereon, said coating comprising (i) a contiguous photopolymerisable layer having a photopolymerisable composition, or (ii) a contiguous intermediate layer and thereon a photopolymerisable layer having a photopolymerisable composition, wherein said photopolymerisable composition comprises a polymerisable compound, a polymerization initiator and a first polymer, b) image-wise exposing said coating, c) optionally, heating the precursor, d) developing the precursor by treating the coating of the precursor with a gum solution or by mounting the exposed precursor on a plate cylinder of a lithographic printing press and rotating the plate cylinder while feeding dampening liquid and/or ink to the coating, wherein said contiguous photopolymerisable or intermediate layer furt

Abstract: A heat-sensitive imaging element includes an IR dye, and more particularly a heat-sensitive lithographic printing plate precursor includes the IR dye. A method for making the lithographic printing plate produces a print-out image of high contrast upon exposure to IR-radiation or heating.