Patent ID: 8671880

Claim:
An ink jet printing apparatus comprising: a conveying unit configured to convey media; an application unit that includes an application roller which applies application liquid onto the media conveyed by the conveying unit and a retention member which is provided to contact the application roller and retain the application liquid within a space so that the application liquid within the space is provided to the application roller; a controller configured to control the application unit to rotate the application roller; and a print unit configured to print an image on the media, on which the application liquid is applied by the application unit, by ejecting ink, wherein the application roller is controlled to perform a preliminary rotation of the application roller before the media contact the application roller in order to form a pool of the application liquid on the application roller at an upstream location outside of the space in a vicinity of the retention member, wherein the controller has a counter for counting a number of the media that have been applied with the application liquid, and the controller controls the application unit to perform the preliminary rotation based on a counter value of the counter, in a case where the counter value does not reach a threshold, the controller does not perform the preliminary rotation, whereas in a case where the counter value reaches the threshold, the controller performs the preliminary rotation and resets the counter value.