| 摘要 |
PROBLEM TO BE SOLVED: To provide an ink jet recorder which can surely couple a tube for constituting an ink channel and a coupling member with each other. SOLUTION: A second coupler 36 to which the flexible tube 5 is inserted and fitted has a tapering head 36a which has the maximal diameter larger than an inner diameter D1 of the tube 5 and has the diameter reduced towards a leading end, and a neck 36b continuous with the maximal diameter side of the head and having a smaller diameter than the maximal diameter. The tube 5 is fitted into the head 36a with the diameter expanded. Moreover, a length d2 of the neck 36b is constituted so that an inner periphery of the tube 5 at the side closer to an end than the head has the diameter made smaller than the maximal diameter of the head 36a towards the side of the neck 36b over a predetermined length (0.7 times of more of the inner diameter of the tube 5) in an axis direction. A resistance against a force of pulling out the tube 5 is increased accordingly. |
