The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 11, 2005
Filed:
Jul. 29, 2002
Paul R. West, Fort Collins, CO (US);
Jeffrey W. Leon, Rochester, NY (US);
Robert E. Mccovick, Rochester, NY (US);
Nicki R. Miller, Fort Collins, CO (US);
Paul R. West, Fort Collins, CO (US);
Jeffrey W. Leon, Rochester, NY (US);
Robert E. McCovick, Rochester, NY (US);
Nicki R. Miller, Fort Collins, CO (US);
Kodak Polychrome Graphics LLC, Norwalk, CT (US);
Abstract
An imaging member, such as a negative-working printing plate or on-press cylinder, can be prepared using a hydrophilic imaging layer comprising a hydrophilic heat-sensitive polymer containing a crosslinking agent comprising ionic groups and epoxy groups. This polymer may comprise quaternary ammonium carboxylate groups which may include at least one substituted-alkylene(C-C)-phenyl group. The imaging member also includes an infrared radiation sensitive material to provide added sensitivity to heat that can be supplied by laser irradiation in the IR region. The heat-sensitive polymer may be 'switchable' in response to heat, and provides a lithographic image without wet processing.