| 摘要 |
<p>A gripper bar (48) conveyor mechanism for transferring sheets (22) to be printed from one rotating impression cylinder (18) to another in a multiple color rotary offset printer (10). The mechanism includes a transferrable gripper bar (48) activatable for releasably securing sheets (22) in a fixed orientation with respect to the transferrable gripper bar (48). A registration projection is affixed to the transferrable gripper bar with a registration pocket (88) adjustably affixed to each of the impression cylinders (18) for temporarily receiving the registration projection (90a, 90b) of the gripper bar (48) to hold the gripper bar (48) in a desired position. A conveyor band (24) is attached to the gripper bar (48) for moving the bar (48) from one impresion cylinder (18) to the next. The registration projection is engaged in the registration pocket (88) at each of the impression cylinders (18) during a portion of cylinder (18) rotation sufficient to initialize rolling contact of the sheet (22).</p> |
