Patent ID: 9004630
Filing Date: 2015-04-14
Classification: B41J

Abstract:
1. An inkjet printing apparatus comprising: an inkjet print head including at least one of print elements for ejecting ink droplets from ejection opening by supply of drive energy thereto, and an ejection opening surface, on which the ejection opening are provided, having hydrophilic properties; an ink removal unit configured to remove inks on the ejection opening surface; and a control unit configured to control the print head to perform a preliminary ejection operation for ejecting ink droplets contributed by printing, wherein the control unit controls the print head such that, in a case where the ejection number of ink ejected from the print head after removing the ink on the ejection opening surface by the ink removal unit is equal to or more than a threshold, a drive energy amount that is supplied to the print element for the preliminary ejection operation is larger than a drive energy amount that is supplied to the print element for the preliminary ejection operation in a case where the ejection number of the ink is less than the threshold.