These printers use the Ricoh 820016 cartridge:
Click On a Printer to View it's Cartridges
          Ricoh Aficio SP C-811 DN
          Ricoh Aficio SP C-811 DN-DL
          Ricoh Aficio SP C-811 DN-T1
          Ricoh Aficio SP C-811 DN-T2
          Ricoh Aficio SP C-811 DN-T3
          Gestetner C 7640 ND