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:
Apr. 23, 2002
Filed:
Aug. 22, 2000
David S. Bennett, Davenport, IA (US);
Sallie L. Blake, Long Grove, IA (US);
Robert E. Bombalski, New Kensington, PA (US);
Kenneth A. Bowman, Apollo, PA (US);
Joseph D. Guthrie, Murrysville, PA (US);
Thomas L. Levendusky, Greensburg, PA (US);
Daniel L. Serafin, Wexford, PA (US);
Jean Ann Skiles, Gibsonia, PA (US);
Alcoa Inc., Pittsburgh, PA (US);
Abstract
A process for making printing plate material suitable for imaging by laser radiation. A metal substrate is electrocoated in a bath containing a polymeric resin and laser-sensitive particles, thereby depositing a laser ablatable layer on a principal surface of the metal substrate. In one embodiment, the laser-ablatable layer is treated with a corona discharge for a time sufficient to render the layer non-ink wettable. In other preferred embodiments, the laser-ablatable layer is overcoated with an overlayer such as a non-ink wettable silicone layer or a water-wettable layer comprising an organophosphorus polymer, preferably a copolymer of acrylic acid and vinylphosphonic acid.