Imaging member containing carbon black and methods of imaging and printing
AssigneeEastman Kodak Company
InventorsShiying Zheng, Xiaoru Wang, Jeffrey W. Leon, Edward Schofield
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Abstract
An imaging member, such as a negative-working printing plate or on-press cylinder, comprises latex polymer-carbon black composite particles. Such imaging members can be prepared with a hydrophilic imaging layer comprised of a heat-sensitive hydrophilic polymer having ionic moieties and the latex polymer-carbon black composite particles as a photothermal conversion material. The latex polymer-carbon black composite particles can be formulated in water or water-miscible solvents without agglomeration with other components such as charged polymers.
Claims44
A heat-sensitive composition comprising:
- a) a hydrophilic heat-sensitive ionomer, and
- b) latex polymer-carbon black composite particles.
The composition of claim I wherein said heat-sensitive ionomer is a Class I polymer represented by the Structure II:
- 10
- wherein HET+ represents a positively-charged, pendant N-alkylated aromatic heterocyclic group, X represents recurring units having attached HET+ groups, Y represents recurring units derived from ethylenically unsaturated polymerizable monomers that provide active crosslinking sites, Z represents recurring units for additional ethylenically unsaturated monomers, x is from about 15 to 100 mol %, y is from 0 to about 20 mol %, z is from 0 to about 85 mol %, and W− is an anion.
A lithographic printing plate comprising latex polymer-carbon black composite particles.
Dependencies are inferred from the claim text.