US 12,089,499 B2
Actuator, liquid discharge head, liquid discharge device, and liquid discharge apparatus
Takuma Hirabayashi, Tokyo (JP); Takahiko Kuroda, Hyogo (JP); and Akio Yoshita, Kanagawa (JP)
Assigned to RICOH COMPANY, LTD., Tokyo (JP)
Filed by Takuma Hirabayashi, Tokyo (JP); Takahiko Kuroda, Hyogo (JP); and Akio Yoshita, Kanagawa (JP)
Filed on Nov. 3, 2022, as Appl. No. 18/052,207.
Claims priority of application No. 2021-186491 (JP), filed on Nov. 16, 2021.
Prior Publication US 2023/0157177 A1, May 18, 2023
Int. Cl. B41J 2/14 (2006.01); H10N 30/20 (2023.01)
CPC H10N 30/20 (2023.02) [B41J 2/14201 (2013.01)] 14 Claims
OG exemplary drawing
 
1. An actuator comprising:
a frame having a recess;
an actuator substrate including a common chamber; and
a damper between the frame and the actuator substrate, the damper defining a part of a wall of the common chamber of the actuator substrate,
wherein the damper includes multiple layers laminated in a lamination direction, and
the multiple layers is symmetrical in the lamination direction with respect to a center of the damper in the lamination direction.