The Canon Calculator P1421 Printer offers a dynamic ink delivery system, ideal for frequent printing environments. Each Compatible Canon Nylon Ribbon Cartridge has a space saving design which easily installs, to reduce downtime normally spent on complicated replacement procedures. These Compatible Canon ERC-02 Ribbons have the power and durability to tackle the most demanding print tasks. The Canon p1421 Calculator also contains a Thermal ribbon cartridge, which minimizes smudging and blurring. We guarantee excellent print quality with our Compatible Canon Ribbon Cartridges or we'll refund your money within 90 days of purchase.