US 12,459,258 B2
Liquid dispensing head
Taiki Goto, Izunokuni Shizuoka (JP); Masashi Shimosato, Mishima Shizuoka (JP); and Noboru Nitta, Tagata Shizuoka (JP)
Assigned to RISO Technologies Corporation, Tokyo (JP)
Filed by RISO Technologies Corporation, Tokyo (JP)
Filed on Jun. 9, 2023, as Appl. No. 18/332,504.
Claims priority of application No. 2022-134889 (JP), filed on Aug. 26, 2022.
Prior Publication US 2024/0066866 A1, Feb. 29, 2024
Int. Cl. B41J 2/14 (2006.01)
CPC B41J 2/14233 (2013.01) [B41J 2002/14306 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A liquid dispensing head, comprising:
a nozzle plate with a plurality of nozzles;
a plurality of pressure chambers respectively communicating with the plurality of nozzles;
a vibration plate disposed on a side of the plurality of pressure chambers opposite the nozzle plate;
a supply-side flow path on an inlet side of the plurality of pressure chambers;
a discharge-side flow path on an outlet side of the pressure chambers; and
a plurality of piezoelectric elements positioned to vibrate the vibration plate to change a volume of the plurality of pressure chambers for ejecting a liquid from the plurality of nozzles, wherein
the supply-side flow path has a flow path resistance that is the same as a flow path resistance of the discharge-side flow-path.