| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a droplet injection device capable of increasing the printing speed of a print head by decreasing the flexibility of a cover member to a widely known limit or less to increase the nozzle density in a printing direction. <P>SOLUTION: The droplet injection device consists of each fluid chamber delimited by a pair of opposite chamber walls mutually separated at chamber wall intervals; a row of the two or more fluid chambers communicating via fluid to a nozzle for droplet injection from the fluid chambers; and a seal cover member connected to the ends of the chamber walls for sealing one side of the fluid chambers. A ratio of the thickness of the cover member to the chamber wall intervals is 1 or less : 1. <P>COPYRIGHT: (C)2013,JPO&INPIT |
