Patent ID: 6457794
Filing Date: 2002-10-01
Classification: B41J

Abstract:
An ink jet recording apparatus, in which a bubble is created in ink by thermal energy generated in response to a drive signal applied to a heater, and the ink is ejected onto a recording material by expansion of the bubble, comprising:a heater; driving means for applying a plurality of driving signals to said heater per one ink droplet ejection, wherein the driving signals include a first drive signal for increasing a temperature of the ink adjacent the heater without ejecting the ink and a second drive signal after the first drive signal with an interval therebetween, for ejecting the ink, wherein the thermal energy generated due to the first drive signal is transferred to the ink adjacent the heater during the interval; and changing means for changing a width of the first drive signal to adjust an amount of ejected ink, wherein the interval is not shorter than the width of the first drive signal even when the width of the first drive signal is maximum.