Patent ID: 8752930

Claim:
A suction-based recovery control method, for an ink jet printing apparatus that includes a print head having a plurality of ejection ports through which to eject ink droplets, a temperature detection unit for detecting an internal temperature of the print head, and a suction-based recovery unit for performing a suction-based recovery operation using either first suction or second suction, the strength of which is stronger than the first suction, in order to recover a state in which the print head ejects ink droplets, comprising: a temperature detection step for permitting the temperature detection unit to detect the internal temperature of the print head; a temperature judgment step for judging whether the internal temperature of the print head, detected by the temperature detection unit, is higher, by a predetermined number of degrees or greater, than a reference temperature that is determined based on internal temperatures of the print head that were previously employed when the suction-based recovery operation was performed; and a suction-based recovery step for permitting the suction-based recovery unit to perform the suction-based recovery operation using the second suction, when it is determined at the temperature judgment step that the internal temperature of the print head is higher by the predetermined number of degrees or greater.