US 11,833,827 B2
Printing apparatus, method of controlling printing apparatus, and storage medium
Eiji Komamiya, Kanagawa (JP)
Assigned to Canon Kabushiki Kaisha, Tokyo (JP)
Filed by CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed on Jan. 26, 2022, as Appl. No. 17/585,267.
Claims priority of application No. 2021-020474 (JP), filed on Feb. 12, 2021.
Prior Publication US 2022/0258478 A1, Aug. 18, 2022
Int. Cl. B41J 2/17 (2006.01); B41J 2/175 (2006.01)
CPC B41J 2/1721 (2013.01) [B41J 2/17566 (2013.01); B41J 2002/1728 (2013.01); B41J 2002/17569 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A printing apparatus, comprising:
a printing head coupled to a tank which accumulates liquid via a tube and which is configured to eject the liquid supplied through the tube from an ejection port to perform a printing operation;
a discharge unit that executes a discharge operation to discharge the liquid from the ejection port;
a determination unit that determines a filling state of the liquid in the tube and a filling state of the liquid in the printing head; and
an obtaining unit that obtains, based on the filling states of the liquid in the tube and the liquid in the printing head, a waste liquid amount discharged from the ejection port by the discharge operation.