Patent ID: 8132879

Claim:
An inkjet printing apparatus comprising: a printhead including a plurality of nozzles for discharging ink and a plurality of heaters respectively corresponding to the plurality of nozzles; driving means for dividing the plurality of heaters into a plurality of blocks, and concurrently driving, for each block, the plurality of heaters; and control means for controlling said driving means to drive the plurality of blocks in a first mode or a second mode, the first mode being used for driving a heater corresponding to a nozzle where an ink meniscus is convex, and the second mode being used for driving a heater corresponding to a nozzle where an ink meniscus is concave, wherein said control means controls said driving means in the first mode in a case where ink discharge is not related to printing an image, and said control means controls said driving means in the second mode in a case where the ink discharge is for printing an image, and wherein a driving time interval between neighboring heaters upon driving the plurality of blocks in the first mode is shorter than that in the second mode.