Patent ID: 6733102
Filing Date: 2004-05-11
Classification: B41J

Abstract:
An ink jet recording apparatus comprising:a recording head for ejecting an ink droplet from a nozzle orifice according to supply of a drive pulse to a pressure generating element; a recording mode setting unit for setting a recording mode from a plurality of recording modes that are different in a correspondence of gradation data and amount of ink; a drive signal generator which can generate various kinds of drive signals including drive pulses according to the recording mode, wherein the drive signal generator generates a drive signal according to the recording mode set by the recording mode setting unit, and the drive pulses extracted from the generated drive signal are supplied to the pressure generating element; a gap detector for detecting a platen gap from the nozzle orifice; and a recording mode limit unit for limiting usable recording modes to a subset of the plurality of recording modes according to the platen gap detected by the gap detector.