| 摘要 |
PURPOSE:To prevent the leak of liquid when a cartridge is mounted and demounted by arranging in series a valve which is opened only in the case when liquid is inhaled and a valve which is opened and closed only in case of the sealed state between a cartridge full of liquid and the cartridge to be mounted and demounted. CONSTITUTION:When the second ink tank 12 in cartridge type is installed into a guide frame 15, a small-diameter part 16a intrudes into a valve device 22 from the opened port of a cap 27, and the small-diameter part 16a is sealed by a sealing member 28. Then, a ball 24 pushes a valve 17 a little projecting from the small-diameter part 16a. Then, the valve 17 is opened through the compression of a spring 19, and the flow passage to the ink tank communicates. The ball 24 contacts with the small-diameter part 16a and is pushed, and the valve 22 is opened. When the ink tank 12 is to be replaced, the valve 17 is closed by the retreat of the ink tank, and the leak of ink is prevented. |
