| 摘要 |
A web-fed, multicolor, offset printing press having a series of printing units for printing different-color images on a continuous web of paper. Each printing unit includes a three-part plate cylinder (PC) rotatably supported between a pair of confronting framing walls (F1 and F2). The plate cylinder is split into three parts (1, 2 and 3) which each have two newspaper pages width. The three parts of the plate cylinder are each capable of adjustable displacement both laterally and circumferentially of the plate cylinder for registration. <??>In order to keep the spacing between the pair of framing walls at a minimum, and hence to prevent the plate cylinder from sagging under its own weight, circumferential adjustments (R11, R21 and R31) and lateral adjustments (R12, R22 and R32) for the three parts of the plate cylinder are all mounted outside the framing walls. <IMAGE> |
