US 12,296,592 B2
Inkjet printing apparatus, control method, and storage medium
Sonoko Egawa, Kanagawa (JP); and Yoshiaki Murayama, Tokyo (JP)
Assigned to Canon Kabushiki Kaisha, Tokyo (JP)
Filed by CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed on Nov. 22, 2022, as Appl. No. 18/058,072.
Claims priority of application No. 2021-192444 (JP), filed on Nov. 26, 2021.
Prior Publication US 2023/0166512 A1, Jun. 1, 2023
Int. Cl. B41J 2/165 (2006.01)
CPC B41J 2/16511 (2013.01) [B41J 2/16526 (2013.01); B41J 2/16514 (2024.05)] 15 Claims
OG exemplary drawing
 
1. An inkjet printing apparatus comprising:
a print head including a plurality of nozzles, each discharging ink;
a conveyance unit configured to convey a print medium relative to the print head;
a cap configured to receive the ink discharged from the print head during preliminary discharge;
an acquisition unit configured to acquire a post-printing ink amount when a print command is input for a print medium, the post-printing ink amount being an amount of ink in the cap at a time of end of printing that is initiated by the print command; and
a discharge unit configured to perform a discharge operation to discharge the ink in the cap before start of the printing initiated by the print command if the post-printing ink amount acquired by the acquisition unit is greater than a threshold value,
wherein the acquisition unit acquires an intra-printing preliminary discharge amount due to preliminary discharge performed during printing based on, among the plurality of nozzles, a number of nozzles used during the printing initiated by the print command.