Patent ID: 8430488

Claim:
An automatic vacuum ink container, comprising: a container cylinder; an ink supply valve mounted at one end of the container cylinder for automatically opening and closing passage of the ink; and a vacuum piston, mounted at the other end of the container cylinder and provided with more than one exhaust hole, for exhausting air when packaging ink and for pushing ink toward the ink supply valve when supplying ink; wherein the ink supply valve comprises a valve lid connected directly with the container cylinder, as well as a valve sleeve embedded into the valve lid; the valve lid can be pushed by ink to move forward so as to form a space for dispensing ink; two sloping sealing faces are set respectively around the top of the valve sleeve and on the inner wall of the top of the valve lid, which can cooperate with each other to seal the container and cut off ink; the more than one exhaust pore is set through the vacuum piston longitudinally.