| 摘要 |
PROBLEM TO BE SOLVED: To provide a liquid jetting device in which choke cleaning can be easily carried out with simple control without making the device large. SOLUTION: An ink is compressedly delivered to a printing head side by introducing compressed air from a compression pump into the gap between an ink pack and an ink case of an ink cartridge. A valve unit 21 is provided in the middle of a flowing path between the ink pack and a recording head. The valve unit 21 has a first ink inserting chamber 84a. A part of the wall surface of the first ink inserting chamber 84a is formed with a first film member 45 flexing by the pressure difference between outside and inside of the first ink inserting chamber 84a. In the first ink inserting chamber 84a, a first filter 43a is disposed at the position facing the first film member 45. The first film member 45 flexes and comes in contact with the first filter 43a, and blocks the flow of the ink passing through the first filter 43a. COPYRIGHT: (C)2005,JPO&NCIPI |
