Patent ID: 6086180
Filing Date: 2000-07-11
Classification: B41J

Abstract:
An ink jet recording apparatus comprising:a recording head for performing print recording by ejecting an ink from an ejection orifice using thermal energy;a plurality of temperature sensors provided in said recording head;a temperature calculation means for calculating a temperature change of said recording head in a unit time as a discrete value based on a supply of energy input to said recording head, and for calculating a temperature change of said recording head by accumulating the discrete value in the unit time;a temperature predicting means for predicting a head temperature by both a calculated value of the temperature change and a base value of the head temperature:a detection means for detecting a difference between the head predicted temperature and a detected temperature sensed by said temperature sensors;an update means for updating the base value of the head temperature by the difference which has been detected; anda control means for controlling ejection of the ink so as to be stabilized in accordance with the head predicted temperature.