US 12,227,010 B2
Printing apparatus and maintenance method
Yosuke Ishii, Kanagawa (JP); Rie Takekoshi, Kanagawa (JP); and Keita Ishimi, Kanagawa (JP)
Assigned to Canon Kabushiki Kaisha, Tokyo (JP)
Filed by CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed on Mar. 16, 2022, as Appl. No. 17/696,559.
Claims priority of application No. 2021-050257 (JP), filed on Mar. 24, 2021.
Prior Publication US 2022/0305792 A1, Sep. 29, 2022
Int. Cl. B41J 2/165 (2006.01)
CPC B41J 2/16535 (2013.01) [B41J 2/16526 (2013.01); B41J 2/16552 (2013.01); B41J 2002/1655 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A printing apparatus comprising:
a printing unit in which a first ejection port array provided along a predetermined direction for ejecting ink, and a second ejection port array provided along the predetermined direction ejecting reaction liquid that reacts with the ink, are formed side by side in a direction intersecting the predetermined direction on the same plane;
a maintenance unit configured to be capable of receiving the ink and the reaction liquid that are ejected from the printing unit and capable of wiping an ejection port surface of the printing unit on which the first ejection port array and the second ejection port array are formed; and
a control unit configured to control at least one of the printing unit and the maintenance unit so that the ejection port surface is wiped by the maintenance unit along the predetermined direction by moving at least one of the printing unit and the maintenance unit in a relative manner,
wherein the control unit is further configured such that, before the wiping is performed, the control unit executes preliminary ejection by the first ejection port array in which ink is ejected to an area of the maintenance unit between an area abutted by the first ejection port array during the wiping and an area abutted by the second ejection port array during the wiping and in which ink is not ejected to the area abutted by the first ejection port array during the wiping or the area abutted by the second ejection port array during the wiping.