Patent ID: 8038268
Filing Date: 2011-10-18
Classification: B41J

Abstract:
1. An ink jet printing apparatus comprising: a printing unit configured to perform a printing operation by ejecting an ink to a print medium; a liquid tank for storing a liquid different from the ink; a liquid holding member having a space that holds the liquid supplied from the liquid tank through a path; an applying roller that applies the liquid held in the liquid holding member to the print medium prior to the printing operation; and a discharging unit having a port that introduces air to the path so as to discharge the liquid from the space with the introduced air toward the liquid tank, wherein the discharging unit discharges the liquid from the space in a case where a command to start the printing operation has not been input within a predetermined period after an application operation of the liquid to the print medium by the applying roller is completed, and wherein the discharging unit does not discharge the liquid from the space in a case where the command has been input within the predetermined period.