Patent ID: 6042208
Filing Date: 2000-03-28
Classification: B41J

Abstract:
An image producing apparatus responsive to stored image file having a plurality of pixels on a receiver medium, comprising:a) a plurality of ink delivery chambers;b) a look-up-table for converting code values corresponding to each pixel of the image file to ink volumes pumped into the ink delivery chamber by microfluidic pumps;c) first computing means for computing the ink volumes of the inks pumped into each ink delivery chamber from the code values of the corresponding pixels of the image file;d) second computing means for computing a pump rate and a pump time for pumping inks of the correct volumes into each ink delivery chamber according to the code values at each pixel of the image file; ande) means responsive to the computed pump rate and pump time for pumping the correct amount of inks into each ink chamber so that the correct amount of ink is transferred by capillary forces of the receiver medium to form image pixels on the receiver medium.