Patent ID: 6264300
Filing Date: 2001-07-24
Classification: B41J,H04N

Abstract:
A method of printing on a print medium with an ink jet printer using a first ink and a second ink, said method comprising the steps of:defining an image area that overlies the print medium, said image area having a plurality of rows and columns of pixel locations, each said pixel location having an assigned pixel value from a range of pixel values;defining a range of threshold values; andfor a set of rows and columns of said pixel locations, comparing each said pixel value associated with said pixel locations with said range of threshold values; andfor a pixel value within said range of threshold values, choosing one of printing an ink dot on the print medium using the second ink and not printing an ink dot; andfor a pixel value outside of said range of threshold values, printing an ink dot on the print medium using one of the first and second inks.