CHECK VALVE AND SYSTEM FOR CONTINUOUS SUPPLY OF INK TO PRINTER

摘要

A system for continuous supply of ink to a printer includes an ink tank, a supporting seat including several inkjet cartridges, and several check valves. The check valve includes a connecting tube having a first through port and a second through port, and a piston shaft movably installed in the connecting tube. The piston shaft moves to open or close the first through port. The first through port communicates with the ink tank by an ink tube and leakage of ink when the printer is lifted or when an inkhead is changed is prevented.