US 12,441,122 B2
Liquid discharge apparatus and imprint apparatus
Sari Ito, Tochigi (JP); Noriyasu Hasegawa, Tochigi (JP); Yuichi Iwasaki, Tochigi (JP); and Takahiro Hosokawa, Tochigi (JP)
Assigned to Canon Kabushiki Kaisha, Tokyo (JP)
Filed by CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed on Feb. 22, 2023, as Appl. No. 18/172,965.
Claims priority of application No. 2022-027006 (JP), filed on Feb. 24, 2022.
Prior Publication US 2023/0264480 A1, Aug. 24, 2023
Int. Cl. B41J 2/175 (2006.01); B41J 2/135 (2006.01); B41J 2/18 (2006.01); B41J 2/185 (2006.01); B41J 11/00 (2006.01); B41J 29/38 (2006.01); B41J 17/00 (2006.01)
CPC B41J 2/17596 (2013.01) [B41J 2/135 (2013.01); B41J 2/175 (2013.01); B41J 2/17556 (2013.01); B41J 2/17563 (2013.01); B41J 2/18 (2013.01); B41J 2/185 (2013.01); B41J 11/002 (2013.01); B41J 29/38 (2013.01); B41J 17/00 (2013.01)] 30 Claims
OG exemplary drawing
 
1. A liquid discharge apparatus comprising:
a storage portion configured to store a discharged material;
a discharge port configured to communicate with the storage portion and discharge the discharged material stored in the storage portion; and
a pressure control device configured to control a pressure of the discharged material stored in the storage portion,
wherein the pressure control device controls the pressure of the discharged material to shift from a first negative pressure state, to a second negative pressure state of a greater negative pressure than the first negative pressure state, and then to a third positive pressure state,
wherein the pressure control device includes:
a first pressure generation unit configured to produce the first negative pressure state;
a second pressure generation unit configured to be connected to the first pressure generation unit and produce the second negative pressure state; and
a third pressure generation unit configured to be connected to the first pressure generation unit and produce the third positive pressure state.