The CL-546 cartridge contains cyan, magenta and yellow ink and with the PG-545 included you'll have all the ink you need to print full-colour photographs and professional documents.
The PG-545 black ink cartridge uses pigment ink; this is far more fade-resistant than traditional dye-based inks and enables you to print texts or greyscale images that will stand the test of time.
Both of the cartridges in this multipack use Canon's patented FINE printhead technology: This means they use precisely aligned and densely packed microscopic nozzles to produce prints with a high level of accuracy and fine details.