LIQUID EJECTION HEAD AND METHOD OF PRODUCING THE SAME

摘要

A liquid ejection head includes a liquid ejection board and a liquid ejection head component disposed on the liquid ejection board. The liquid ejection board includes a substrate, an energy generating device on the substrate, a channel defining member defining a liquid channel and having a liquid ejection opening in communication with the liquid channel, a liquid supply passage in communication with the liquid channel, a liquid supply opening in communication with the liquid supply passage and having a smaller opening cross-sectional area taken in a direction perpendicular to a flow direction of a liquid than the liquid supply passage, and an opening in communication with the liquid channel. The liquid channel allows a liquid to be in contact with the energy generating device. The liquid ejection opening allows a liquid to be ejected therethrough. The liquid ejection head component closes at least a portion of the opening.

主权项

1. A liquid ejection head comprising:
a liquid ejection board including:
a substrate;an energy generating device on a first surface of the substrate;a channel defining member defining a liquid channel and having a liquid ejection opening in communication with the liquid channel, the liquid channel allowing a liquid to be in contact with the energy generating device, the liquid ejection opening through which the liquid is ejected;a liquid supply passage in communication with the liquid channel;a liquid supply opening in communication with the liquid supply passage, the liquid supply opening having a smaller opening cross-sectional area taken in a direction perpendicular to a flow direction of a liquid than the liquid supply passage; andan opening in communication with the liquid channel, the opening being included in addition to the liquid ejection opening and the liquid supply passage; and a liquid ejection head component disposed on the liquid ejection head so as to close at least a portion of the opening.