HP Color LaserJet 8550 Multifunction Printer series - Manual (Page 125)

EN
Additional basic copying features 125
Using Automatic Color Selection (ACS)
ACS function
The copy module has an ACS function that automatically detects
whether the original is in color or black and white.
When making copies of a color original, the copy module will
automatically make copies in the Full Color mode. When making
copies of a black-and-white original, the copy module will
automatically make copies in the Black Monochrome mode.
When ACS is pressed, the ACS key lights. Press ACS again to turn
the function off. The default setting is ACS enabled.
Note When the original contains color, the ACS function selects the Full
Color mode. However, if the color portion is very small, or if the color
is faint or appears almost black, the Black Monochrome mode may be
selected by the ACS function. If this happens, press
F ULL C OLOR to
switch to the Full Color mode.
When making copies using the Full Color mode, black-and-white
originals will be counted as full color copies.
Making black and white copies of originals
containing color
Press B LACK on the copy module control panel, and then press
S TART to make copies in the Black Monochrome mode.
This function makes copies in the Black Monochrome mode,
regardless of whether the original is in color, or black and white.
Press ACS or F ULL C OLOR to cancel the Black Monochrome mode.