Patent ID: 7422299

Claim:
A method of modifying a single color bi level bit map including a plurality of pixel locations arranged in side by side linear arrays, each pixel containing a pixel bit, comprising: selecting a marked pixel that is to be printed by malfunctioning drop generator; determining whether the selected marked pixel is in a half-toned uniform region; if the selected marked pixel is in a half-toned uniform region that corresponds to a region of substantially uniform lightness or value in a pre-half-toned multi-bit per pixel data, marking a first unmarked pixel of a first sequence of potential destination pixel locations; if the selected marked pixel is not in a half-toned uniform region that corresponds to a region of substantially uniform lightness or value in a pre-half-toned multi-bit per pixel data, marking a first unmarked pixel of a second sequence of potential destination pixel locations; wherein the second sequence of potential destination pixel locations is different from the first sequence of potential destination pixel locations.