CompuServe Messages

The are more reasons for not printing in 4 colors on the DJ 550C. The bleeding of color inks with the black ink isn't the only problem and can be nearly cured when using the depletion and shingling function as recommend in the HP docs. A more serious problem with low resolution 4 color printers are disturbing black color dots surrounded by color dots. For instance, the black dots make a skin surface look rough. Try a picture of a face. Printing with 4 colors result in very visible black dots in the skin area. The problem becomes even more visible when using error diffusion dithers like Floyd Steinberg in areas with a saturation >50%. Another thing most people don't think about: speed. Depending on the graphic/dither you are printing, 3 or 4 color printing method can differ a lot when it comes to printing speed. Often 3 colors are much faster. — Wolf Faust, Am Dorfgarten 10, 60435 Frankfurt, Germany —