Laser-induced material transfer digital lithographic printing plates
AssigneeKodak Polychrome Graphics LLC
InventorsMitchell S. Burberry, Sharon W. Weber
Life of this patent
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Abstract
An assemblage for forming a lithographic printing plate is disclosed. The assemblage contains a receiver support with a rough hydrophilic surface; a layer containing a poly(cyanoacrylate) binder; and a donor support. When the assemblage is exposed with a high intensity laser beam, the binder is transferred to the hydrophilic surface of the receiver support to produce a lithographic printing plate. The transfer requires relatively low exposure and no post processing is necessary.
Claims25
An assemblage for forming a lithographic printing plate, said assemblage comprising:
- a donor support having thereon a layer or layers, wherein at least one of said layers comprises a vinyl polymeric binder having recurring units of the following formula:
- ##STR8## wherein:
- R.sup.1 is cyano, and
- R.sup.2 is --CO--R.sup.3, where R.sup.3 is OR, and R is alkyl or alkoxyalkyl;
- and
- a receiver element comprising a receiver support having a hydrophilic surface such that, upon imagewise heating, said binder is transferred to said hydrophilic receiver surface.
An assemblage for forming a lithographic printing plate, said assemblage comprising:
- a receiver support comprising a rough hydrophilic surface such that, upon imagewise heating, a binder is transferred to said hydrophilic receiver surface;
- a donor support having thereon a layer or layers, wherein at least on one of said layer or layers comprises a laser light absorbing material and at least one of said layer or layers comprises the binder;
- wherein, the binder comprises a poly(alkyl cyanoacrylate) or a poly(alkoxyalkyl cyanoacrylate).
Dependencies are inferred from the claim text.