Panasonic KX-P8410 - Manual (Page 70)

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Dither A
$ Color Graphics type
Color Graphics is a print style that simulates shades of color by changing
the dot patterns. You can select a dot pattern from Default
S 1 , Dither A, or
Dither B.
This selection is effective only when Color Graphics is selected.
S
1 Dither A or B will be automatically selected according to a print quality
you have selected.
Using the Printer
Dither B