US 12,391,043 B2
Liquid discharge head, liquid discharge device, liquid discharge apparatus, and method of manufacturing liquid discharge head
Sho Kawakami, Kanagawa (JP); Jun Zhang, Kanagawa (JP); Yasunori Sugimoto, Kanagawa (JP); Toshihiro Kanematsu, Kanagawa (JP); Mizuki Otagiri, Kanagawa (JP); Riku Maeshiro, Kanagawa (JP); and Kiyoshi Amari, Kanagawa (JP)
Assigned to RICOH COMPANY, LTD., Tokyo (JP)
Filed by Sho Kawakami, Kanagawa (JP); Jun Zhang, Kanagawa (JP); Yasunori Sugimoto, Kanagawa (JP); Toshihiro Kanematsu, Kanagawa (JP); Mizuki Otagiri, Kanagawa (JP); Riku Maeshiro, Kanagawa (JP); and Kiyoshi Amari, Kanagawa (JP)
Filed on May 16, 2023, as Appl. No. 18/197,744.
Claims priority of application No. 2022-083024 (JP), filed on May 20, 2022; and application No. 2023-039858 (JP), filed on Mar. 14, 2023.
Prior Publication US 2023/0373214 A1, Nov. 23, 2023
Int. Cl. B41J 2/14 (2006.01); B41J 2/16 (2006.01); B41J 2/175 (2006.01); B41J 25/00 (2006.01)
CPC B41J 2/1433 (2013.01) [B41J 2/162 (2013.01); B41J 2/1623 (2013.01); B41J 2/17596 (2013.01); B41J 2002/14475 (2013.01); B41J 25/001 (2013.01); B41J 2202/05 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A liquid discharge head comprising:
a nozzle plate having:
a nozzle hole from which a liquid is discharged; and
a first positioning hole penetrating through the nozzle plate in a thickness direction of the nozzle plate;
a housing bonded to the nozzle plate to form a single bonded body, the housing having a second positioning hole extending in a thickness direction of the housing;
a channel between the nozzle plate and the housing, the liquid flowing through the channel to the nozzle hole; and
a positioning member fitting into the first positioning hole and the second positioning hole to position the nozzle plate relative to the housing,
wherein a length of the positioning member in the thickness direction of the nozzle plate is:
smaller than a sum of a length of the first positioning hole and a length of the second positioning hole in the thickness direction of the nozzle plate; and
larger than the length of the second positioning hole in the thickness direction of the nozzle plate.