US 12,251,934 B2
Liquid ejection head
Ryo Sato, Tokyo (JP); Kyosuke Toda, Kanagawa (JP); and Shimpei Yoshikawa, Kanagawa (JP)
Assigned to Canon Kabushiki Kaisha, Tokyo (JP)
Filed by CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed on Dec. 2, 2022, as Appl. No. 18/073,716.
Claims priority of application No. 2021-196824 (JP), filed on Dec. 3, 2021.
Prior Publication US 2023/0173809 A1, Jun. 8, 2023
Int. Cl. B41J 2/14 (2006.01); B41J 2/055 (2006.01)
CPC B41J 2/1404 (2013.01) [B41J 2/055 (2013.01); B41J 2/14024 (2013.01); B41J 2/14145 (2013.01); B41J 2/14201 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A liquid ejection head, comprising:
a frame having a plurality of ejection ports for ejecting a liquid, a common liquid chamber, a plurality of individual liquid chambers through which the common liquid chamber communicates with each of the ejection ports; and
a plurality of energy generating elements disposed in respective individual liquid chambers,
wherein a part of a wall of the frame that forms the common liquid chamber is formed of an elastic member capable of deforming elastically so that a volume of the common liquid chamber can be modified,
wherein the frame includes:
a substrate on which the plurality of energy generating elements is mounted; and
a flow channel forming member that is laminated on a mounting surface of the energy generating elements on the substrate, and that forms a flow channel of a liquid including the individual liquid chambers and the common liquid chamber between the flow channel forming member and the substrate,
wherein the substrate has a substrate through-portion,
the substrate through-portion is configured to penetrate the substrate so as to open at the mounting surface, and make up a part of a wall surface that forms the common liquid chamber,
wherein the flow channel forming member has:
a recessed portion provided on an opposing surface that faces the substrate, the recessed portion being provided so as to cover individually the plurality of energy generating elements and partially oppose the substrate through-portion, such that the plurality of individual liquid chambers are formed between the mounting surface and the recessed portion,
a plurality of through-holes that are opened at positions opposing respective energy generating elements in the recessed portion, and that form the plurality of ejection ports, and
a wall portion that is provided at a position opposing the substrate through-portion, and that makes up a part of the wall surface that forms the common liquid chamber together with the substrate through-portion, and
wherein the part of the wall portion is formed by the elastic member.