1. A method of generating an N gray level dither matrix for an output device having sub-pixel addressability, the method comprising the steps of: a. creating a super-resolution grid [i, j] corresponding to a pixel grid [p,q] of; b. generating the dither matrix for a sub-pixel grid [m,n], wherein said dither matrix is comprised of a plurality of dither patterns, each corresponding to one of the N gray levels, wherein each said dither pattern is derived using the super resolution grid [ij].