US 12,434,475 B2
Liquid discharge head, liquid discharge apparatus, and method for manufacturing liquid discharge head
Ayako Maruyama, Kanagawa (JP)
Assigned to Canon Kabushiki Kaisha, Tokyo (JP)
Filed by CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed on Jul. 31, 2023, as Appl. No. 18/362,407.
Claims priority of application No. 2022-125153 (JP), filed on Aug. 5, 2022; and application No. 2023-083720 (JP), filed on May 22, 2023.
Prior Publication US 2024/0042762 A1, Feb. 8, 2024
Int. Cl. B41J 2/14 (2006.01)
CPC B41J 2/14233 (2013.01) [B41J 2/14201 (2013.01); B41J 2002/14241 (2013.01); B41J 2002/1425 (2013.01); B41J 2202/11 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A liquid discharge head comprising:
a discharge port configured to discharge a liquid;
a liquid chamber configured to communicate with the discharge port;
a vibrating plate disposed on a surface of the liquid chamber on a side facing a surface communicating with the discharge port, and including a plurality of layers stacked in a layered structure; and
a piezoelectric element disposed on a second surface of the vibrating plate being a back surface of a first surface of the vibrating plate in contact with the liquid chamber,
wherein the vibrating plate has a recessed portion surrounded by a bottom surface and four lateral surfaces intersecting with the bottom surface on the first surface, and
wherein the recessed portion penetrates through a first layer having the first surface among the plurality of layers of the vibrating plates.