| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a liquid injection head that prevents adhesion of bubbles generated by an adhesive at adhesion region in a liquid channel, thus preventing an adverse effect such as deterioration in liquid ejection performance due to the mixture/growth of the bubbles, and to provide a liquid injection device. <P>SOLUTION: The liquid injection head includes a head body, and the ink channel 25 that is secured to a liquid supply port side of the head body via the adhesive 60 and guides ink, which is supplied from an ink cartridge into the ink supply port of the head body. The ink channel 25 includes two channels, which are a first ink channel 25a whose diameter of a flow channel cross-sectional area is reduced and a second ink channel 25b whose diameter of a flow channel cross-sectional area is increased. The most downstream part of the first ink channel 25a is opened to penetrate a surface parallel to an adhesive surface of the adhesive 60 at the center of a confluence part 25e, which is chamber formed with the surface of the ink supply port side of the head body. The most downstream part of the second ink channel 25b is a channel, where an ink flow direction is oriented in a plane direction of the adhesive surface, is opened in a guide part 25b communicated with the confluence part 25e. <P>COPYRIGHT: (C)2013,JPO&INPIT |
