| 摘要 |
PROBLEM TO BE SOLVED: To detect that a liquid in a liquid feeding channel leaks to a gas discharge channel from a gas permeation film. SOLUTION: Individual gas chambers 63a-63d for discharging a gas in ink channels 47a-47d are installed above the ink channels 47a-47d for supplying the ink to an inkjet head, respectively. The ink channels 47a-47d and the individual gas chambers 63a-63d are divided from each other by gas permeation films 60a, respectively. A non-woven fabric 55 is arranged at a top surface of each gas permeation film 60a, and an electrode 56 and an electrode 57 are disposed spaced from each other on a top surface of the non-woven fabric 55. When the ink in the ink channels 47a-47d begins to leak from the corresponding gas permeation films 60a to the individual gas chambers 63a-63d, the leaking ink is absorbed by the non-woven fabric 55 and spreads all over the non-woven fabric 55, whereby the electrode 56 and the electrode 57 are electrically conducted to each other via the ink. COPYRIGHT: (C)2009,JPO&INPIT |
