| 摘要 |
A printing machine is arranged to print on a substrate (3) in sheet or in strip form and possesses a housing (1) having at least one inlet and/or outlet orifice (2,5) for said print support. The inlet and/outlet orifice is provided with obturator means (7) constituted of a microporous cellular or alveolar flexible noise damping material, with a smooth abrasion resistant surface, and arranged to obturate at least the greater portion of said orifice and prevent the propagation outwards of the noises generated within the machine in the course of the operation of the latter without however interfering with the correct passage of the print support through the orifice. <IMAGE> |
