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) : Office Products
Ricoh MP C307 Black Toner Cartridge, Genuine (G3355)
Amazon.com: MADE IN USA TONER Compatible Replacement for Ricoh MP C306, C307, C406, C407 High Yield (Black, Cyan, Yellow, Magenta, 4 Pack) : Office Products