| 摘要 |
PROBLEM TO BE SOLVED: To well keep the sealing function of an atmospheric vent valve provided on the midway of a pressurized gas feeding path from a pump part to a liquid storing body in a liquid jetting apparatus, and to suitably exhibit a liquid pressurizing and feeding function to a liquid jetting head side from a liquid storing body side. SOLUTION: A pressurizing pump apparatus comprises air feeding tubes 32a-32e guiding pressurized air exhausted from the pump part 46 to an ink cartridge constituted so as to deliver a stored liquid to a recording head side by receiving a pressurizing force of the pressurized air, the atmosphere opening valve 35 which makes the air feeding tube to a communicated condition to the atmosphere when it is under a valve opening condition, and makes the air feeding tube to a non-communicated condition closed to the atmosphere when it is under a valve closing condition, and filter members 81 and 86 which are arranged at a position on the midway in the air feeding tube and are arranged at a position on the midway at least from the pump part 46 to a valve element arranging position of the atmospheric vent valve 35. COPYRIGHT: (C)2007,JPO&INPIT |
