Multitone ink jet printer and method of operation

Details Multitone ink jet printer and method of operation Multitone ink jet printer and method of operation

B - Operations, Transporting

41

J

314/41, 101/96.0

B41J 2/21 (2006.01) G01D 15/16 (2006.01)

Patent

CA 1278460

ABSTRACT This patent application discloses a method and apparatus useful for eight-level halftone thermal ink jet printing by printing with droplets of ink with volumes weighted in a binary sequence. Three (3) binary-weighted drop generators which are fired in sequence are useful in an eight-level, three color printing process and additionally may be employed with a clear ink vehicle drop generator in order to reduce optical density of single small dots in a given pixel area to thereby reduce grainyness This method and apparatus are also adapted for three (3) color number printing with a chosen number of rows and columns of binary-weighted drop generators, including untoned vehicle if desired, in order to achieve color printing of pixels having desired color and optical density.

534038

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