| 摘要 |
A printing unit (1) for packets (2), having: a printing conveyor (6) for feeding the packets (2) successively along a printing path (P), and having a number of pockets (12), each for housing a respective packet (2); an input station (7); an output station (8); and a printing station (16) located along the printing conveyor (6), between the input station (7) and the output station (8), and having a printing device (17) for printing a code on the outer surface of each packet (2) on the printing conveyor (6); the printing conveyor (6) has a belt (9) looped about at least two end pulleys (10) and supporting a number of gripping members (13), each extending perpendicularly to the belt (9) and defining a wall of a respective pocket (12) which is narrowest along straight portions (T2, T4) of the printing path (P), and widest along curved portions (T1, T3, T5) of the printing path (P).
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