| 摘要 |
<p>Digital ink jet printing apparatus and method. The apparatus receives an input image file having a plurality of pixels, each pixel described by at least one pixel value respectively associated with an optical density. The apparatus comprises a printhead (50) and at least one nozzle (45) integrally attached to the printhead, the nozzle being capable of ejecting an ink droplet (47) therefrom to define an associated one of the optical densities. A waveform generator (230) is connected to the nozzle for generating an electronic waveform (80) to be supplied to the nozzle. In this manner, the nozzle ejects the ink droplet in response to the waveform supplied thereto. The waveform is defined by a plurality of pulses (90). A look-up table (60) stores a plurality of waveform serial numbers assigned to respective waveforms, each waveform being defined by at least one predetermined parameter, such as number of pulses, pulse amplitude, pulse width and/or time delay between pulses. A calibrator receiving the input image converts the pixel values of the input image to waveform index number associated with the waveform serial number. <IMAGE></p> |
