Amazon.com: Do it Wiser Compatible Printer Toner Cartridge Replacement for Ricoh 841849 for use in Ricoh MP C6003 MP C4503 MP C5503 MP C6004 (1Pack - Black) : Office Products
Training | Replacing toner on a Ricoh Colour MFP (MP C2003 - MP C6003) | Ricoh Wiki - YouTube
OEM Ricoh Toner Cartridge, BLACK, 33K YIELD - for use in Ricoh MP C4503 printer, MP C4504SP printer, MP C5503 printer, MP C6003 printer, MP C6004SP - Walmart.com
RICOH MP C6003/C4503/C5503/C4504/C6004 High Yield Original Genuine OEM