| 摘要 |
Any droplets that are not deflected onto a substrate during printing are collected in a gutter 2 and are recycled to the reservoir 3 of the ink flow system. The ink droplets are removed from the gutter by suction applied thereto by a controlled solenoid valve 13. The suction may be varied, pulsed or interrupted. The ink is sucked from the gutter through the valve 13 via a duct 14 to a venturi pump 11 and then returned to the reservoir 3. The operation of the valve may be modified in response to any ambient temperature and pressure changes detected by a sensor 30. Other valves suitable for use include rotary, gate, butterfly, flap or similar types. |
