HP Color LaserJet 8550 Multifunction Printer series - Manual (Page 208)

208 Chapter 6 Color balance and color creation
EN
Second Side Elimination
Use Second Side Elimination mode to keep an image from the back
side of a lightweight original from the appearing on the copy.
Second Side Elimination cannot be combined with the following
settings:
! Speed Priority setting in the Black Text Auto Exposure
Adjustment Priority setting in the Administration (Additional)
functions (see page 236)
! Black Text setting in the Basic Features screen (see page 104)