Patent ID: 6443548
Filing Date: 2002-09-03
Classification: B41J,H04N

Abstract:
A printing method of performing printing on a printing medium by discharging ink from an inkjet printhead using a plurality of inks having different densities, comprising:an input step, of inputting multi-valued image data; a calculation step, of calculating a lapse time from previous ink discharges by the printhead; a prediction step, of predicting a print density change according to a time variation of ink based on the lapse time calculated in said calculation step; a selection step, of selecting a type of ink and ink discharge amount suitable for representing a density value indicated by the input multi-valued image data based on the print density change predicted in said prediction step; and a driving step, of driving the printhead to cause ink discharge from the printhead based on the type of ink and ink discharge amount selected in said selection step.