| 摘要 |
PROBLEM TO BE SOLVED: To manufacture an ink cartridge which can supply ink with less mixing of the air in the ink cartridge where a differential pressure regulating valve is disposed between an ink supplying port and an ink storing region. SOLUTION: In a manufacturing process, the ink supplying port 2 is sealed by a seal 16, and a negative pressure is acted to an ink chamber above a membrane valve seat 3, whereby the air in the cartridge is removed. A pressure of the ink chamber is lowered more than that of an ink feeding chamber 5. Therefore, a valve element 8 moves to the ink chamber side against a spring 21 as shown in (C) in the figure, forming a gap between the membrane valve seat 3 and a valve element 20. The air of the whole cartridge can be removed regardless of the presence of the membrane valve seat 3 and the valve element 20, enabling the ink to be filled in the ink feeding chamber 5. The ink can be filled while the mixing of the air is made little. COPYRIGHT: (C)2007,JPO&INPIT |
