These cartridges adaptable to prices without competition unfortunately does not work on my Canon Pixma MP980. I stopped the charges after the third. Only a cyan seems to work (almost without observing the color). The problem seems to come from defective electronic chips. One wonders why these products are still on sale despite the number of negative opinions on the ... The unused remainder was returned and reimbursement asked Amazon. Note the simplicity of the procedure for reference, I tested for the first time.