HP LaserJet 3380 All-in-One Printer - Manual (Page 173)

For a more environmentally responsible return of used cartridges and supplies, HP
encourages the use of bulk returns. Simply bundle two or more cartridges together and use
the single, pre-paid, pre-addressed UPS label that is supplied in the package. For more
information in the U.S., call (800) 340-2445, or visit the HP LaserJet Supplies website at
http://www.hp.com/recycle .
Saving toner
To save toner, select the EconoMode option in your device properties settings. (For more
information, see
To use EconoMode (to save toner) .) While in EconoMode (Save Toner), the
device uses less toner on each page. Selecting this option extends the life of the print
cartridge and reduces your cost per page, but it also reduces print quality. HP does not
recommend full-time use of EconoMode. See
Print cartridge life expectancy for more
information.
ENWW HP LaserJet print cartridges 161