HP Color LaserJet 8550 Multifunction Printer series - Manual (Page 163)

162 8 Solving Printer Problems EN
Working with Toner
HP recommends that you use HP LaserJet toner cartridges. HP has
designed the printer, toner cartridges, and toner formula to work
together to give you optimal image quality from the printer.
If toner gets on clothing or carpet, wipe the toner off with a dry cloth
and then wash with cold water. Warm water or the heat of a dryer will
set the toner into the clothing or carpet.