Printing machine and handling carriage for rolls of a printing unit in the printing machine

The invention relates to a mobile handling carriage (9) for handling a rotary roll (10) in a printing unit (2), including: a mobile chassis (90); a support member (91) for supporting the roll (10); a first drive device (902) configured to drive the support member (91) in translation in a vertical direction; an actuator (92) mounted on the support member (91) and configured to collaborate with the roll (10) positioned a distance above the support member (91); a second drive device (910) configured to drive the actuator (92) in translation in a longitudinal direction; a control circuit configured to control a first sequence including, in succession: a raising of the support member (91); a longitudinal translation of the support member (91) in a first direction; a lowering of the support member (91); a longitudinal translation of the actuator in the first direction.