Patent ID: 6408747
Filing Date: 2002-06-25
Classification: B41F,B41P

Abstract:
A roll-fed rotary offset printing machine, comprising:a printing unit having an impression cylinder and at least one cylinder pair including a form cylinder and a transfer cylinder operatively arranged so that ink is applicable from the transfer cylinder to a printing material web guidable along a vertical path between the transfer cylinder and the impression cylinder; the form cylinder having an outer surface with a circumferential length and a longitudinal length configured such that a first print page array is independently fittable within the outer surface of the form cylinder, the first print page array being in a broadsheet format and comprising only one broadsheet page fittable in the circumferential length of the form cylinder and at least four broadsheet pages fittable in the longitudinal length of the form cylinder, wherein the circumferential length of said form cylinder is sized for receiving only one height of said broadsheet page; and said form cylinder further comprising means for receiving at least one flexible printing plate having a height and a length, wherein the circumferential length of said form cylinder is sized for receiving only one height of said at least one flexible printing plate and the longitudinal length of said form cylinder is sized for receiving at least one width of said at least one flexible printing plate, wherein said first print page array is arrangeable on said at least one flexible printing plate; and wherein a circumferential length of said transfer cylinder is larger than the circumferential length of said form cylinder by an integral multiple and a longitudinal length of said transfer cylinder spans at least the longitudinal length of said at least one flexible printing plate.