HP LaserJet 3150 All-in-One Printer series - Manual (Page 242)

240 A Specifications EN
Toner consumption
Depending on the type of printer driver you have, you may be able to
select a “draft” mode which uses about 50% less toner, thereby
extending the life of the toner cartridge. This is only available using
printer driver properties when printing or making copies from the
software.
Paper use
Depending on the type of program you use, you may be able to print 2
or 4 document pages on each printed page. This “N-up” printing
practice and the printer’s manual duplex capability (two-sided
printing) reduce paper usage and the resulting demands on natural
resources.
The design of this HP LaserJet printer facilitates the recycling
of:
Plastics
Plastic parts have marking according to international standards that
enhance the ability to identify plastics for recycling purposes at the
end of the product’s life.
HP LaserJet Printing Supplies
In many countries/regions, this product's printing supplies (e.g., toner
cartridge, drum, fuser) can be returned to HP through the HP Planet
Partners Printing Supplies Environmental Program. An easy-to-use
and free takeback program is available in more than 20 countries/
regions. Multi-lingual program information and instructions are
included in every new HP LaserJet toner cartridge and consumables
package.
HP Planet Partners Printing Supplies Environmental Program
Information
Since 1990, the HP LaserJet Toner Cartridge Recycling Program has
collected more than 25 million used LaserJet toner cartridges that
otherwise may have been discarded in the world's landfills. The HP
LaserJet toner cartridges and consumables are collected and bulk
shipped to our resource and recovery partners who disassemble the
cartridge. After a thorough quality inspection, selected parts such as
nuts, screws, and clips are reclaimed for use in new cartridges.
Remaining materials are separated and converted into raw materials
for use by other industries to make a variety of useful products.