Konica Minolta magicolor 4750EN/4750DN User Manual page 156

Refer to the following URL for recycling information.
US: printer.konicaminolta.net/products/recycle/index.asp
Europe: www.konicaminolta.eu/printing-solutions/more-information/
clean-planet.html
Other regions: printer.konicaminolta.com
Note
The use of non-genuine toner cartridges may result in unstable
performance. In addition, any damage caused by the use of
non-genuine toner cartridges is not covered by the warranty, even if it
occurs during the warranty period. (Although damage is not certain to
result from using non-genuine toner cartridges, we strongly
recommend that you use genuine toner cartridges.)
Replacing Consumables 7-3