INK RECEPTIVE DAMPENING SYSTEM FOR LITHOGRAPHIC PRINTING PRESS

摘要

An apparatus for continuously providing dampening fluid to a plate cylinder (12) of a lithographic printing press includes a frame (82) operatively connected to the printing press. A dampening fluid reservoir (16) is attached. A pan roller (22) is rotatably mounted in the frame and is disposed in contact with dampening fluid in the dampening fluid reservoir (16). A transfer roller (26) set tangentially contacts and is parallel to the pan roller (22). An ink receptive oscillating roller (34) having a porous and compressible surface is tangentially contacting and parallel to the transfer roller (26). The oscillating roller is gear driven at a rotational speed proportional to the speed of the plate cylinder (12). A water form roller (38) is rotatably mounted in the frame contacting and in parallel relation to both the plate cylinder (12) and the ink receptive oscillating roller (34).