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When printing a color pdf from Adobe reader the output is in greyscale and unreadable. I have looked high and low for some sort of option to turn off greyscale, dithering, etc. with no success. The only solution I have found so far is to turn the contrast all the way up to three. At least it's legible, but still not very good. How do you force the 5775 to print a color document in black and white only?