Patent ID: 6263790
Filing Date: 2001-07-24
Classification: B41F

Abstract:
An improved apparatus for use in security printing of security paper (1a), especially banknotes, comprising:(a) a paper sheet;(b) a device which transports the paper;(c) an application unit for applying security images (7) which are supported on at least one ribbon (8, 8a), the ribbon being brought into contact with a sheet of paper (1), the images (7) being applied at predetermined points on the paper (1) corresponding to the printing on the security paper (1a), the application unit comprising two reels (B1, B2), a winding up reel (25), a preheating device (13), a press cylinder (4) and an applicator cylinder (5), the applicator cylinder (5) having pads (52) arranged on the periphery of the applicator cylinder in register with said predetermined points, cooperating with the press cylinder (4), between which cylinders a paper path is defined, said ribbon (8, 8a) being mounted between the two reels (B1, B2) which dispense and the winding up reel which winds up the ribbon, the ribbon (8, 8a) passing parallel to the path of the paper (1), and the preheating device (13) preheating the ribbon (8, 8a) and being mounted upstream of the applicator cylinder (5) so as to preheat the images (7) which will be applied to the sheet of paper (1) by simple contact of said pads (52) with the images (7) against the press cylinder.