Drive unit for color roller used in printer has hydraulic remote cylinder that has pressure chambers arranged over directional control valve with inflow line for guiding system or low pressure, and connectable to return pipe

摘要

The drive unit has a rotating unit (2) for driving a color roller (1), and a lift fixing device (6) with hydraulic remote cylinder (46) for displacing the color roller in axial direction. The remote cylinder has pressure chambers (42,44) arranged over a directional control valve (30) with an inflow line (28) for guiding system or low pressure, and connectable to a return pipe (32).