Use darkest setting for pencil and blue ink. Use lightest setting on newspaper and colored paper.
Red ink is thenext best color.
Blue ink, and pencil do poorly. On these, it may be necessary to have shadows on the copies in order to get readable print. When you move the exposure to dark, you are underexposing the image. All areasof the copy are darkened not just the print. The copy may have grey shadows if the exposure setting is too dark.