Amazon.co.jp: Original Code Spc310 Toner Cartridge is compatible with Ricoh and is suitable for Ricoh Aficio Sp C311n / 312dn / c231sf / ipsio printers, 4 colors - blue : Computers
Cartridge Black for Ricoh Aficio SP C-231-n SP C-242-sf SP C-231-sf SP C-312-dn | eBay