US 12,441,113 B2
Printing apparatus and method for controlling printing apparatus
Norio Sakurai, Tokyo (JP)
Assigned to CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed by CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed on Jul. 17, 2023, as Appl. No. 18/353,849.
Application 18/353,849 is a continuation of application No. PCT/JP2022/004285, filed on Feb. 3, 2022.
Claims priority of application No. 2021-020600 (JP), filed on Feb. 12, 2021.
Prior Publication US 2023/0364915 A1, Nov. 16, 2023
Int. Cl. B41J 2/17 (2006.01); B41J 2/175 (2006.01)
CPC B41J 2/1707 (2013.01) [B41J 2/17596 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A printing apparatus comprising:
a tank configured to contain liquid to be supplied to a printing head that ejects the liquid from an ejection port;
a supply passage configured to supply the liquid from the tank to the printing head;
a suction unit configured to suction the liquid from the ejection port;
a valve provided at a first position in the supply passage and configured to be switchable between an open state in which the supply passage communicates and a closed state in which the supply passage is blocked; and
a control unit configured to control the valve and the suction unit,
wherein the control unit:
performs control of first suction in which the valve is set to the open state and the suction unit performs the suction, and the suction unit stops the suction when the liquid reaches the first position or a second position downstream of the first position,
after the first suction is finished, performs control of second suction in which the valve is set to the closed state and the suction unit performs the suction, and
after the second suction, performs control of setting the valve to the open state.