Ricoh Aficio 650 Operating Instructions Manual page 71

Auto Image Density
A Make sure that the [Auto Image Density] key is selected.
Note
If not, touch the [Auto Image Density] key.
Manual Image Density
A Touch the [Auto Image Density] key to cancel it.
B Touch the [Lighter] or [Darker] key to adjust the image density.
Combined Auto and Manual Image Density
A Make sure that the Auto Image Density is selected.
B Touch the [Lighter] or [Darker] key to adjust the density.
Basic Functions
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