Patent ID: 6432211
Filing Date: 2002-08-13
Classification: B41N,C11D

Abstract:
A method of cleaning an imaged printing form having a silicone-based non-printing layer, which comprises:providing a cleaning fluid containing: water, a disinfectant having a sodium-silver chloride complex, and a cleaning concentrate having 1 to 30 percent by weight of an anionic surfactant and 1 to 30 percent by weight of a nonionic surfactant; applying the cleaning fluid to a printing-form surface to be cleaned, the printing form surface being part of a printing form imaged with dot elements selected from the group consisting of halftone dots and screen dots, the printing form surface having a silicone-based non-printing layer; and exerting a defined contact pressure to the printing-form surface by pressing cleaning equipment against the printing-form surface; while the cleaning equipment is pressed against the printing form surface, moving the printing form in a first direction of rotation and thereby removing imaging residues from leading dot-edges of the dot elements; and subsequently, while the cleaning equipment is pressed against the printing form surface, moving the printing form in a second direction of rotation that is opposite the first direction of rotation and thereby removing imaging residues from trailing dot-edges of the dot elements.