Liquid ejection head

摘要

A liquid ejection head includes ejection ports for ejecting liquid, recesses respectively accommodating the ejection ports in the insides thereof, ejection sections operating as passages directed to the respective ejection ports, and liquid channels for supplying the respective ejection sections with liquid. The ejection sections and the liquid channels are arranged in rows extending in respective directions that intersect each other, and the connection sections respectively connecting the ejection sections and the corresponding liquid channels represent an elliptic contour having a major axis and a minor axis as viewed from the corresponding one of the ejection ports, while the recesses also represent an elliptic contour having a major axis and a minor axis.

主权项

1. A liquid ejection head comprising:
ejection ports for ejecting liquid; recesses respectively accommodating the ejection ports, the ejection ports being respectively accommodated within the recesses; ejection sections operating as passages directed to the respective ejection ports; and liquid channels for supplying the respective ejection sections with liquid, wherein the ejection sections and the liquid channels are arranged in rows and extend in respective directions that intersect each other, connection sections respectively connect the ejection sections and the corresponding liquid channels and form an elliptic contour having a major axis and a minor axis as viewed from the corresponding one of the ejection ports, while the recesses also form an elliptic contour having a major axis and a minor axis, and the length of the major axis of each of the recesses is greater than a pitch of an arrangement of the ejection ports in a direction parallel to the major axis and the recesses are arranged such that any adjacently located recesses are directed in the same direction.