| 摘要 |
<p>Air is prevented from flowing into the ink channel when an ink pack is replaced. An ink pack housing stand (6) to which an ink pack (5) is attached is equipped with a male connector (11) for leading an ink out from the ink pack (5), and an automatic on/off valve (12) for opening/closing the ink channel between the male connector (11) and an ink tube (7). The automatic on/off valve (12) is equipped with an opening/closing valve section (16) for opening/closing the ink channel by means of a diaphragm valve (19), and an ink pack-detecting section (17) which moves a protrusion (30) for deforming the diaphragm valve (19) in conjunction with attachment/detachment of the ink tube (7). When the ink tube (7) is attached, the ink pack-detecting section (17) and the protrusion (30) are pushed down to open the ink channel, and when the ink tube (7) is taken out, the ink pack-detecting section (17) and the protrusion (30) are pushed up to close the ink channel.</p> |
