METHOD FOR CONTROLLING LIQUID EJECTION HEAD AND LIQUID EJECTING APPARATUS

摘要

There is provided a method for stabilizing a refilling speed within a predetermined range even with various physical properties of liquid to be ejected in a liquid ejection head using a thermal system. To achieve this, a drive pulse is controlled for each nozzle array according to the combination of a predetermined material and structure of a bubble-generating chamber and the physical property of the liquid to be ejected such that an amount of an overshoot and the refilling speed are within a predetermined range.

主权项

1. A method for controlling a liquid ejection head having 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 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, liquid to be ejected by a first nozzle array and liquid to be ejected by a second nozzle array are different from each other, and by 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 larger than bubble-generating power in the second nozzle array, 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.