Computer monitors display color by combining red, green, and blue light on the screen. Color printers, however, use a combination of cyan, magenta, yellow, and black inks. The difference in these two color modes can cause images to appear darker on paper than on the screen. As you become familiar with how your printer handles color, adjust your images to compensate. If the printed image appears too dark, use the Brightness/Contrast command to adjust it.
Printing Multiple Images on a Page
Printing Images Using a Template
Printing Images from the Browser
Printing with CMYK Color Separations