HP Color LaserJet 5550 Printer series - Manual (Page 288)

supplies
Materials used by the printer that are used up and must be replaced. Supply
items for the HP Color LaserJet 5550 printer are the four print cartridges, the
transfer unit, and the fuser.
TCP/IP
An internet protocol (developed by the U.S. Department of Defense) that has
become the global standard for communications.
toner
The fine black or colored powder that forms the image on the printed media.
transfer unit
The black plastic belt that transports the paper inside the printer and
transfers the toner from the print cartridges onto the paper.
tray
A receptacle for holding blank paper.
xerographic paper
General term for paper intended for photocopy or laser printer use.
274 Glossary ENWW