| 摘要 |
PROBLEM TO BE SOLVED: To provide a flow passage component capable of securing a necessary length of an individual communication port, and further to provide a liquid discharge head and a liquid discharge device.SOLUTION: A lower face of a ceiling portion 40, that is, an inclined face 41 inclined from a ceiling face of a second liquid chamber 52 toward a lower face of a communication substrate 23 is formed in the second liquid chamber 52 of the communication substrate 23. An individual communication port 42 is formed in a state of passing through the communication substrate 23 from the inclined face 41. One end (lower end) of the individual communication port 42 is opened on the inclined face 41 and communicates with the second liquid chamber 52, and the other end (upper end) of the individual communication port 42 is opened on a top face of the communication substrate 23 and individually communicates with a pressure chamber of a pressure chamber formation substrate. Further, when a thickness of the communication substrate 23 is represented by T, a length of the individual communication port 42 is represented by L, and a substantial depth of the second liquid chamber 52 is represented by D, it is configured so as to satisfy L+D>T.SELECTED DRAWING: Figure 4 |
