Patent attributes
A droplet discharge apparatus includes: a tank for storing a function liquid; a first supply tube for supplying the function liquid; a plurality of pressure control valves for controlling a pressure of the function liquid supplied from the tank via the first supply tube, to a predetermined pressure and then letting out the function liquid; a plurality of droplet discharge heads for discharging the function liquid let out from the pressure control valves in the form of droplets; and a plurality of second supply tubes for connecting outlets of the pressure control valves and inlets of the droplet discharge heads so that the function liquid let out from the pressure control valves is supplied to the droplet discharge heads. Distances between the outlets and the corresponding inlets are different from one another, and lengths of the second supply tubes are equalized so that resistances of flow paths between the outlets and the corresponding inlets are equalized.
