| 摘要 |
PROBLEM TO BE SOLVED: To provide a liquid injection head being capable of using a member in common, causing flow passages not used to be opened to the atmosphere while suppressing leakage of liquid and being capable of being reduced in size, and further to provide a liquid injection device.SOLUTION: A liquid injection head comprises: a first flow passage member 310 having first flow passages of N kinds of liquid; a second flow passage member 250 having second flow passages 251 of M (N<M) kinds of liquid; a nozzle plate having nozzle openings of the N kinds of liquid; and discharge sections for injecting the liquid supplied from the second flow passages 251 from the nozzle openings of the nozzle plate. The first flow passages are connected to N kinds of second flow passages 251 only out of M kinds of second flow passages 251 of the second flow passage member 250 while being connected to N kinds liquid supply sources only. The second flow passages 251 not connected to the first flow passages out of the M kinds of second flow passages 251 are blocked by the nozzle plate, and communicate with an outside and are opened to the atmosphere between the first flow passage member 310 and the second flow passage member 250.SELECTED DRAWING: Figure 9 |
