| 摘要 |
<p>A printing machine has a series of printing units (12-22) each provided with a mast (80) to support the corresponding flexographic printing plate via movable device (82) so that the lower end of the plate can be fixed to the roll (60), the roll (60) can be turned through one revolution to wind the plate about the roll, and then the device released; plate removal is accomplished by the reverse operation. Blanks are fed through the machine by a chain (50) and gripper (64) system using endless chains (50) having one run located substantially in the feed plane, and the rollers (58) are grooved and recessed (66) to accommodate the grippers (64) as they pass through the roll (58-60) nips.</p> |
