US 11,840,092 B2
Liquid ejection head
Makoto Watanabe, Kanagawa (JP); Junichiro Iri, Kanagawa (JP); Naruyuki Nojo, Kanagawa (JP); Motoaki Sato, Tokyo (JP); and Yusuke Hashimoto, Kanagawa (JP)
Assigned to Canon Kabushiki Kaisha, Tokyo (JP)
Filed by CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed on Nov. 3, 2021, as Appl. No. 17/518,474.
Claims priority of application No. 2020-186561 (JP), filed on Nov. 9, 2020.
Prior Publication US 2022/0143982 A1, May 12, 2022
Int. Cl. B41J 2/175 (2006.01); B41J 2/16 (2006.01)
CPC B41J 2/17526 (2013.01) [B41J 2/1626 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A liquid ejection head comprising:
an ejection-port formed member including ejection ports that eject liquid;
a substrate including a plurality of liquid supply ports for supplying liquid to the ejection ports of the ejection-port formed member and a partition between the plurality of liquid supply ports; and
a supporting member that supports the substrate,
wherein the liquid supply ports extend along a longitudinal direction of the substrate when viewed from a position facing a main surface of the substrate,
wherein the plurality of liquid supply ports are arrayed along a lateral direction of the substrate when viewed from the position facing the main surface of the substrate,
wherein the partition includes a non-contact portion that is not in contact with the supporting member and a contact portion that is in contact with the supporting member,
wherein, of the plurality of liquid supply ports, adjacent liquid supply ports communicate with each other in the lateral direction through a gap between the non-contact portion and the supporting member when viewed from the position facing the main surface of the substrate, and liquid flows through the gap, and
wherein a plurality of contact portions, each of which is the contact portion, are arranged in a staggered pattern when viewed from the position facing the main surface of the substrate.