Digital inkjet printing machine for printing on cylindrical substrates

A digital inkjet printing machine for printing on cylindrical substrates, comprising:

• a conveyor table conveying at least one cylindrical substrate and at least one printing station equipped with a series of printheads having a parallel longitudinal axis, wherein said table has a vertical rotation axis and supports at least one spindle supporting said cylindrical substrate, wherein said spindle has an axis oriented radially relative to said vertical rotation axis, wherein said spindle is actuatable in rotation about its axis, wherein said conveyor table is configured to stop said spindle below said printheads, wherein said spindle stopped below said printheads has its axis parallel to the longitudinal axis of said printheads, wherein the axis of the spindle stopped below said printheads belongs to main planes in which said printheads lie, wherein said printheads are equidistant from the axis of said spindle, wherein there is provided a first adjustment setting adjusting the distance between the axis of the spindle and said printheads and at least a second adjustment setting adjusting the orientation of said main planes in which said printheads lie, said second adjustment setting configured to maintain the condition of the axis of the spindle stopped below said printheads of belonging to the main planes in which said printheads lie as the distance between the axis of the spindle and said printheads varies.