Method and apparatus using two different black inks to reduce intercolor bleeding and provide high quality edge definition with thermal ink jet systems

摘要: A color ink jet printing device capable of substantially reduced intercolor bleeding includes an printer having at least one printhead and three separate supplies in communication with the printhead. first supply contains a slow drying black ink. second fast third non-black Prior to printing, image potions are determined. The portions printed using pixel priming process, border substitution process or combination thereof reduce bleed. prints quartertone halftone pattern ink, followed by subsequent whole tone superposed on primed area analyzes neighboring matrix pixels surrounding each pixel, preferably 5×5 matrix, determine if other than present. If so, that is Otherwise, This may be further improved checkerboarding portions. involves partial checkerboard pass complementary provide