Patent ID: 7658480

Claim:
A method for refilling ink into an ink cartridge, comprising: providing the ink cartridge, which comprises; a container body; an ink chamber formed in the container body; an ink supply opening, formed in a first side of the container body and adapted to receive an ink supplying needle of a printer, for communication between the ink chamber and a print head of the printer; an ink injection opening formed in the first side of the container body and communicating with the ink chamber; and a film member attached to the container body and sealing the ink injection opening: forming a through-hole through the film member to unseal the ink injection opening; injecting ink into the ink chamber through the through hole and the ink injection opening; and sealing the ink injection opening after the injecting by attaching a sealing member to the container body so that a first part of the sealing member covers at least a part of the film member and a second part of the sealing member extends through the through-hole and liquid-tightly contacts an interior surface of the ink injection opening which is located between the film member and the ink chamber.