Canon LBP-800 User Manual page 73

More Options
More Options accesses the settings for toner density, toner saver, and
Automatic Image Refinement.
Toner Density lets you select how light or dark your pages print. Move
the slider to the right to darken your printed output, slide it to the left to
lighten your printed output.
Toner Saver prints only alternate data bits, so toner consumption is
reduced.
Automatic Image Refinement is a printer technology from Canon, with
which the printer automatically senses and refines the jagged edges and
ragged curves of characters and graphics.
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Chapter 3 Using the Canon Advanced Printing Technology