You generally have three options when choosing who makes your ink: Ink and Toner Buying Guide - Office Depot
If you have the old cartridges, the model number is usually printed clearly on the top or front label (e.g., Go to product viewer dialog for this item. Epson T220 Go to product viewer dialog for this item. how to buy ink for printer
Look for a sticker on the front, top, or side for the model number (e.g., " HP Deskjet 2700 Go to product viewer dialog for this item. Canon PIXMA TS6320 Go to product viewer dialog for this item. You generally have three options when choosing who