US 12,454,131 B2
Ink discharging apparatus
Rie Joboji, Nagoya (JP)
Assigned to BROTHER KOGYO KABUSHIKI KAISHA, Nagoya (JP)
Filed by BROTHER KOGYO KABUSHIKI KAISHA, Nagoya (JP)
Filed on Nov. 21, 2023, as Appl. No. 18/515,484.
Claims priority of application No. 2022-190893 (JP), filed on Nov. 30, 2022.
Prior Publication US 2024/0173987 A1, May 30, 2024
Int. Cl. B41J 2/175 (2006.01)
CPC B41J 2/175 (2013.01) [B41J 2/1752 (2013.01); B41J 2/17556 (2013.01); B41J 2/17596 (2013.01)] 9 Claims
OG exemplary drawing
 
1. An ink discharging apparatus comprising:
a tank configured to store an ink;
a head configured to discharge the ink supplied from the tank;
a supply pipe connecting the tank and the head;
a pump arranged in the supply pipe, the pump being configured to transfer the ink from the tank to the head;
a pipe branching upward from the supply pipe; and
a pressure sensor connected to an upper end part of the pipe,
wherein the pipe has an upper tube part and a lower tube part continuous with the upper tube part; and
a first cross-sectional area of an internal space of the upper tube part is greater than a second cross-sectional area of an internal space of the lower tube part.