Patent ID: 6102513
Filing Date: 2000-08-15
Classification: B41J,H04N

Abstract:
An inkjet printing apparatus for printing an output image in response to an input image file defined by a plurality of pixel values, comprising:(a) a nozzle capable of ejecting a plurality of ink droplets of variable volume therefrom;(b) a waveform generator connected to said nozzles for generating a plurality of electronic waveforms each preceded by a starting time delay, each of the waveforms defined by a plurality of electric pulses supplied to said nozzles for ejecting the ink droplets therefrom;(c) a storage location associated with said waveform generator, for storing a plurality of waveform serial numbers therein associated with each one of the electronic waveforms, each of the waveforms being defined by waveform parameters;(d) a controller connected to said storage location and the waveform generator for generating the waveform parameters allowing the waveforms to eject the ink droplets from said nozzles so as to accurately place the ink droplets on a receiver medium; and(e) a calibrator adapted to receive the input image file for converting the pixel values thereof to a plurality of waveform index numbers obtained from a continuous waveform function, the waveform index numbers being associated with respective ones of the waveform serial numbers defining a calibrated image file.