| 摘要 |
PROBLEM TO BE SOLVED: To provide a liquid ejection head capable of preventing an adverse influence on liquid flow due to swollen pieces of a bonding layer, and further to provide a liquid ejection device equipped therewith.SOLUTION: A pressure generation chamber unit 24, a supply port formation substrate 9, a common liquid chamber formation substrate 7 and a nozzle plate 6 are formed as a layer structure, an introduction flow passage 13 for introducing liquid from a common liquid chamber 2 to a pressure generation chamber 4 is provided in the supply port formation substrate 9, a supply flow passage 14 for supplying the liquid from the pressure generation chamber 4 to a nozzle opening 5 is provided in the supply port formation substrate 9 and the common liquid chamber formation substrate 7, and control flow passages 25 for causing the common liquid chamber 2 and the introduction flow passage 13 to communicate with each other are formed on a surface 7a of an introduction flow passage 13 side of the common liquid chamber formation substrate 7. By adopting such a configuration as described above, an amount of the liquid flowing back to the common liquid chamber 2 at the time of liquid ejection is reduced, and an amount of the liquid introduced at the time of liquid introduction to the pressure generation chamber 4 is increased by means of liquid flow control of the control flow passages 25. |
