There is also a sheet feeder assembly and output stacker assembly. All this is controlled by one main motor and also there are various controls and adjustments. The main controls are On Off switch, Manual advance knob-To slowly move the roller while fixing the master onto the rollers, Operation mode lever-There are five steps Start water roller, Start ink roller, Engage water roller with master, Engage ink roller with master, Engage blanket and impression roller along with sheet feeder, Machine speed lever, Cylinder gap adjust knob. These are the main parts of the press where in inks are used mostly and in large proportion.