Patent ID: 9676181
Date: 2017-06-13
CPC Classifications: B41J

Claim:
1. A method for controlling a liquid ejection head comprising steps of: preparing a plurality of nozzle arrays, each having a plurality of nozzle parts arranged in rows, each of the plurality of nozzle parts comprising a bubble-generating chamber for accommodating a liquid, a heater for applying thermal energy for generating a bubble in the liquid inside the bubble-generating chamber, and an ejection port for ejecting a liquid droplet, wherein among the plurality of nozzle arrays, the liquid to be ejected by a first nozzle array and the liquid to be ejected by a second nozzle array are different from each other; and applying different drive pulses to the heater of the first nozzle array and to the heater of the second nozzle array such that bubble-generating power in the first nozzle array is greater than bubble-generating power in the second nozzle array, such that a refilling speed after ejection from the first nozzle array and a refilling speed after ejection from the second nozzle array are within a predetermined range.