Patent ID: 8613495
Filing Date: 2013-12-24
Classification: B41J

Abstract:
1. A liquid ejection head comprising an ejection device substrate having a substrate provided with an energy-generating element that generates energy for ejecting a liquid, a liquid supply member that supplies the liquid to the ejection device substrate, and a support member that is provided between the ejection device substrate and the liquid supply member and joined to the ejection device substrate and to the liquid supply member, wherein the support member has at least two liquid supply flow paths that are through-holes extending through the support member and has a projected portion or a depressed portion at a joint surface of the support member with respect to the liquid supply member, wherein a spacing between two first openings of two of the liquid supply flow paths adjoining each other at the joint surface of the support member with respect to the liquid supply member is larger than a spacing between two second openings of the two of the liquid supply flow paths adjoining each other at a joint surface of the support member with respect to the ejection device substrate, and wherein each of the two liquid supply flow paths is formed in the support member such that the first opening of the liquid supply flow path at the joint surface of the support member with respect to the liquid supply member and the second opening of the liquid supply flow path at the joint surface of the support member with respect to the ejection device substrate communicate with each other.