US 12,269,271 B2
Liquid discharge head and method of manufacturing the liquid discharge head
Motoaki Sato, Tokyo (JP); and Junichiro Iri, Kanagawa (JP)
Assigned to Canon Kabushiki Kaisha, Tokyo (JP)
Filed by CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed on Mar. 22, 2023, as Appl. No. 18/188,372.
Claims priority of application No. 2022-074667 (JP), filed on Apr. 28, 2022.
Prior Publication US 2023/0347654 A1, Nov. 2, 2023
Int. Cl. B41J 2/175 (2006.01)
CPC B41J 2/17523 (2013.01) [B41J 2/17556 (2013.01); B41J 2/17559 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A liquid discharge head, comprising:
a recording-element substrate configured to discharge a liquid;
a cuboid-like liquid tank configured to support the recording-element substrate and to store the liquid to be discharged from the recording-element substrate; and
an absorbent accommodated in a compressed state in the liquid tank and configured to absorb and hold the liquid,
wherein multiple projections are formed on a bottom of the liquid tank, and
wherein as viewed in plan in a direction orthogonal to the bottom, the projections are disposed so as to surround or straddle an injection position at which the liquid is injected into the absorbent using an injection needle.