Dither Dithering General 140 C -dither %s ppmtomd ev/ppmtomd-Dither-Halftone Monochrome printing, standard black cartridge Black Black Monochrome printing, re-usable economy black cartr EconoBlack EconoBlack Floyd-Steinberg (not recommended for MicroDry) FloydSteinberg FloydSteinberg Halftone Halftone Halftone More than 4 colors, colors one page at a time MultiColour MultiColour No dithering None None Square (experimental, not recommended) Square Square