My T Nguyen

US Patent:

59087056, Jun 1, 1999

Filed:

Mar 10, 1997

Appl. No.:

8/812900

Inventors:

My T. Nguyen - Montclair NJ
Hui Zhu - Yonkers NY
S. Peter Pappas - West Orange NJ
Ken-ichi Shimazu - Briarcliff Manor NY
Robert Hallman - Palisades Park NJ

Assignee:

Kodak Polychrome Graphics, LLC - Norwalk CT

International Classification:

B41N 104
B41N 303

US Classification:

428461

Abstract:

Lithographic plate compositions and a method for their production have been discovered that are especially useful in conjunction with digitally controlled lasers to directly construct printable images on lithographic plates. The plates comprise a substrate and an ablatable polymeric coating on the substrate where the ablatable, imageable coating is prepared by in situ or solution polymerization of conjugated monomers deposited on the plate by vapor deposition or in solution. Examples of such monomers are thiophene, pyrrole and aniline.

US Patent:

61434701, Nov 7, 2000

Filed:

Jun 23, 1995

Appl. No.:

8/494617

Inventors:

My T. Nguyen - Montclair NJ
Hui Zhu - Yonkers NY
S. Peter Pappas - W. Orange NJ
Ken-ichi Shimazu - Briarcliff Manor NY
Robert W. Hallman - Palisades Park NJ

International Classification:

G03F 711

US Classification:

4302731

Abstract:

Lithographic printing plates for wet or waterless offset printing are disclosed which can be imagewise exposed using a digitally controlled IR laser. The invention comprises a laser imagable lithographic printing plate comprising a substrate, a photosensitive coating on the substrate, and a water soluble laser ablatable top coating containing dyes or polymers that absorb infra-red, ultraviolet and visible light. Laminated transparent polymer films and/or peelable polymeric coatings films can be interposed between the coated substrate and a water soluble and/or organic solvent soluble laser ablatable top layer to augment plate production or image inscription on the plate.