3x Pro Toner Nero per Ricoh Aficio SP C-231-n SP C-232-dn SP C-311-n | eBay
Cartridge Black for Ricoh Aficio SP C-231-n SP C-242-sf SP C-231-sf SP C-312-dn | eBay
Ricoh Aficio SP C231N Black 6k Toner Cartridge No warranty RC SPC310HSBK
LD Compatible Replacement for Ricoh 406475 High Yield Black Laser Toner Cartridge for use in Ricoh Aficio SP C231N, SP C232DN, SP C242DN, SP C242SF, and SP C320DN s - Walmart.com
Ricoh SPC310 Magenta Aficio SP-C231N Compatible Toner - The Cartridge Guy