Patent ID: 6672698
Filing Date: 2004-01-06
Classification: B41J

Abstract:
An ink jet recording apparatus which performs recording on a recording medium by ejecting inks of a plurality of different colors by the use of an ink jet head for ejecting the inks, said ink jet recording apparatus comprising:moving means for moving the ink jet head within a moving area to the recording medium, detecting means, installed externally from the ink jet head at a predetermined position within the moving area of the ink jet head by the moving means, for detecting ink droplets ejected from the ink jet head and outputting a detection signal in accordance with a detection result, ink ejecting means for moving the ink jet head by the moving means and ejecting the inks from the ink jet head within a predetermined area including the predetermined position, deciding means for deciding the presence of ink ejection by the ink ejecting means on the basis of a detection signal output from the detecting means, and control means for changing at least one condition of the ink ejection cycle by the ink ejecting means, the moving speed of the ink jet head by the moving means and the number of the inks ejected within the predetermined area by the ink ejecting means, in accordance with the colors of the inks.