US 12,138,924 B2
Liquid ejection head and manufacturing method of liquid ejection head
Naoko Shimizu, Kanagawa (JP); Toru Nakakubo, Kanagawa (JP); Kazuhiro Yamada, Kanagawa (JP); Atsushi Teranishi, Kanagawa (JP); and Osamu Kanome, Kanagawa (JP)
Assigned to Canon Kabushiki Kaisha, Tokyo (JP)
Filed by CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed on Oct. 11, 2023, as Appl. No. 18/485,183.
Application 18/485,183 is a continuation of application No. 17/538,775, filed on Nov. 30, 2021, granted, now 11,850,855.
Claims priority of application No. 2020-201148 (JP), filed on Dec. 3, 2020.
Prior Publication US 2024/0034061 A1, Feb. 1, 2024
Int. Cl. B41J 2/14 (2006.01); B41J 2/18 (2006.01)
CPC B41J 2/14145 (2013.01) [B41J 2/14016 (2013.01); B41J 2/1404 (2013.01); B41J 2002/14306 (2013.01); B41J 2/18 (2013.01); B41J 2202/20 (2013.01); B41J 2202/21 (2013.01)] 2 Claims
OG exemplary drawing
 
1. A liquid ejection head comprising:
an element substrate having a plurality of ejection orifices for ejecting liquid, a plurality of individual liquid chambers corresponding to each ejection orifice of the plurality of ejection orifices, a common liquid supply chamber configured to supply liquid to the plurality of individual liquid chambers, and a common liquid collection chamber configured to collect liquid from the plurality of individual liquid chambers;
a pitch conversion supply path extending in a direction horizontal to the element substrate without branching, connecting with the common liquid supply chamber at a first connecting point, and configured to supply liquid to the common liquid supply chamber;
a common liquid supply path extending in a direction vertical to the element substrate, connecting with the pitch conversion supply path at a second connecting point, and configured to supply liquid to the pitch conversion supply path;
a pitch conversion collection path extending in a direction horizontal to the element substrate and configured to collect liquid from the common liquid collection chamber; and
a common liquid collection path extending in a direction vertical to the element substrate and configured to collect liquid from the pitch conversion collection path,
wherein the liquid ejection head comprises a plurality of the pitch conversion supply paths each including a bending point where it bends between the first connecting point and the second connecting point.