Amazon.com: Do it Wiser Compatible Printer Toner Cartridge Replacement for Ricoh 842091 for use in Ricoh MP C307 MP C306 MP C406 MP C407 (Black - High Yield) : Electronics
Amazon.com: C406 Remanufactured 842091 Black High Yield Toner Cartridge Replacement for Ricoh MP C307 MP C306 MP C406 MP C407 Printer (1 Black 1-Pack,High Yield 17,000 Pages) : Office Products