US 12,472,744 B2
Printing apparatus and a method of controlling a printing apparatus including a control unit controlling a cleaning operation of a wiping unit wiping an ejection port surface
Rie Takekoshi, Kanagawa (JP); Toshimitsu Danzuka, Tokyo (JP); Akihiro Tomida, Kanagawa (JP); Akiko Aichi, Tokyo (JP); Keita Ishimi, Kanagawa (JP); Hiroto Kango, Tokyo (JP); Taku Yokozawa, Kanagawa (JP); and Kazuo Suzuki, Kanagawa (JP)
Assigned to CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed by CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed on Jun. 23, 2023, as Appl. No. 18/340,649.
Claims priority of application No. 2022-111285 (JP), filed on Jul. 11, 2022.
Prior Publication US 2024/0010002 A1, Jan. 11, 2024
Int. Cl. B41J 2/165 (2006.01); B41J 2/175 (2006.01)
CPC B41J 2/16535 (2013.01) [B41J 2/17596 (2013.01); B41J 2002/1655 (2013.01); B41J 2002/1657 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A printing apparatus comprising:
a print head configured to eject ink, which has flowed from a first channel into a pressure chamber, from a nozzle, by driving an ejection energy generating element installed in the pressure chamber;
a circulation pump configured to circulate the ink in a circulation channel including the first channel, the pressure chamber, and a second channel that flows the ink inside the pressure chamber to the outside of the pressure chamber;
a wiping unit configured with a cleaning member that can wipe an ejection port surface of an ejection port and a winding member that winds the cleaning member; and
a control unit configured to control a cleaning operation in which the wiping unit wipes the ejection port surface, so that, in a case when the cleaning operation is performed after the circulation pump is stopped, the cleaning operation is changed, based on an elapsed time from the time the circulation pump stopped driving,
wherein, in a case when the elapsed time is equal to or less than a predetermined threshold value, the control unit causes the wiping unit to perform a first cleaning operation, in which the wiping unit is moved so as to wipe the ejection port surface while winding of the cleaning member is performed, and, in a case when the elapsed time is greater than the predetermined threshold vale, the control unit causes the wiping unit to perform a second cleaning operation, in which the wiping unit is moved so as to wipe the ejection port surface without the winding of the cleaning member.