| 摘要 |
A recording head includes an ejection portion configured to eject ink, a first flow path forming member and a second flow path forming member joined to each other between which a flow path for supplying ink to the ejection portion, a buffer chamber for keeping gas, and a communication passage between the flow path and the buffer chamber are formed, a through-hole formed on the second flow path forming member configured to penetrate the second flow path forming member to open onto a surface on an opposite side of a joint surface facing the first flow path forming member, and a communication port formed at a position facing an interior of the buffer chamber, configured to communicate with the through-hole, wherein the communication port is arranged at a position higher than a wall of a top surface that constitutes a communication passage in a usage state of the recording head. |
| 主权项 |
1. A recording head for ejecting ink, the recording head comprising:
an ejection portion configured to eject ink; a first flow path forming member and a second flow path forming member joined to each other, between which a flow path for supplying ink to the ejection portion, a buffer chamber for keeping gas, and a communication passage communicating between the flow path and the buffer chamber are formed; a through-hole formed on the second flow path forming member, configured to penetrate the second flow path forming member to open onto a surface on an opposite side of a joint surface facing the first flow path forming member; and a communication port formed at a position facing an interior of the buffer chamber, configured to communicate with the through-hole, wherein the communication port is arranged at a position higher than a wall of a top surface that constitutes a communication passage in a usage state of the recording head. |
