Ink wiping system for an intaglio printing press

摘要

There is described an ink wiping system (100) for an intaglio printing press comprising a rotatable wiping roller assembly (102) designed to wipe excess ink from the surface of a rotatable intaglio printing cylinder (80). The rotatable wiping roller assembly (102) comprises a rotatable hollow cylindrical body (110) having an outer surface (110a) positioned to wipe the surface of the printing cylinder (80), and a pressing device (130) disposed inside the cylindrical body (110) and designed lo exert pressure on an inner surface (110b) of the cylindrical body (110) and to allow adjustment of a wiping pressure between the cylindrical body and the intaglio printing cylinder (80). The pressing device (130) preferably comprises a plurality of pressing units (132) that are distributed axially along the inside of the hollow cylindrical body (110) to allow adjustment of the wiping pressure between the cylindrical body (110) and the intaglio printing cylinder at a plurality of axial positions along the length of the hollow cylindrical body (110).

主权项

1. An ink wiping system for an intaglio printing press comprising a rotatable wiping roller assembly designed to wipe excess ink from the surface of a rotatable intaglio printing cylinder of the intaglio printing press,
wherein the rotatable wiping roller assembly comprises: a rotatable hollow cylindrical body having an outer surface positioned to wipe the surface of the intaglio printing cylinder; and a pressing device disposed inside the hollow cylindrical body and designed to exert pressure on an inner surface of the hollow cylindrical body and to allow adjustment of a wiping pressure between the hollow cylindrical body and the intaglio printing cylinder, wherein the wiping pressure between the hollow cylindrical body and the intaglio printing cylinder is adjustable by the pressing device at a plurality of axial positions along the length of the hollow cylindrical body, where the pressing device comprises a plurality of pressing units that are distributed axially along the inside of the hollow cylindrical body to allow adjustment of the wiping pressure between the hollow cylindrical body and the intaglio printing cylinder at the plurality of axial positions along the length of the hollow cylindrical body, wherein each pressing unit comprises a position-adjustable pressing member designed to exert pressure on the inner surface of the hollow cylindrical body and an actuator designed to allow adjustment of a radial position of the pressing member inside the hollow cylindrical body, and wherein the position-adjustable pressing member comprises a rotatable pressure ring positioned for rolling contact with an inner section of the inner surface of the hollow cylindrical body and a roller bearing having on outer cage secured to the inside of the rotatable pressure ring, the actuator being arranged inside an inner cage of the roller bearing to adjust a radial position of the rotatable pressure ring and of the roller bearing inside the hollow cylindrical body.