US 12,233,652 B2
Tank unit and liquid ejecting apparatus
Nanami Haga, Shiojiri (JP); Yuta Komatsu, Shiojiri (JP); and Akihiko Maruyama, Matsumoto (JP)
Assigned to Seiko Epson Corporation, Tokyo (JP)
Filed by SEIKO EPSON CORPORATION, Tokyo (JP)
Filed on Oct. 12, 2022, as Appl. No. 18/046,001.
Claims priority of application No. 2021-169380 (JP), filed on Oct. 15, 2021.
Prior Publication US 2023/0117107 A1, Apr. 20, 2023
Int. Cl. B41J 2/175 (2006.01); B41J 2/18 (2006.01)
CPC B41J 2/17566 (2013.01) [B41J 2/175 (2013.01); B41J 2/18 (2013.01); B41J 2/17513 (2013.01); B41J 2/17553 (2013.01); B41J 2/17556 (2013.01); B41J 2/17563 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A tank unit into which liquid supplied from a liquid container is configured to flow and out of which the liquid is configured to flow toward a liquid ejecting head configured to eject the liquid, the tank unit comprising:
a first inlet portion via which the liquid supplied from the liquid container flows in;
a first chamber configured to store the liquid that flows in via the first inlet portion;
a first opening-to-atmosphere portion configured to open an inside of the first chamber to atmosphere;
an outlet flow passage to which one end is connected to the first chamber;
a second chamber connected to an other end of the outlet flow passage and configured to store the liquid supplied from the first chamber;
a second opening-to-atmosphere portion configured to open an inside of the second chamber to atmosphere; and
an on-off valve configured to open and close the outlet flow passage, wherein
the first inlet portion is connected to the first chamber via an opening portion at some midpoint in a vertical direction of the first chamber, and
the first chamber and the second chamber are aligned in a horizontal direction.