CANON Printers – Pixeljet

Are there any loose Canon cartridges for sale?

My cartridge does not fit into the printer as precisely as the original cartridge.

I have removed the orange protective cap and now there is ink leaking from the cartridge.

My cartridge looks different than the original cartridge.

My prints are of poor quality: white stripes / inferior colour.

I get different print results than with an original cartridge.

I bought a multipack cartridges, but I am missing the color grey.

I cannot print after replacing the cartridge.

I cannot print, but the cartridge contains enough ink.

My Canon printer prints marks on the paper and cleaning the print head does not improve it. What should I do?