I have long urged me not to buy "imitation" cartridge. For in the family there have been times bad experiences with it. However, I have decided because of the price for it, but sometimes even try. After saving 75% compared to an original cartridge, was a reason to try it for myself. But I must say that I am very satisfied with the quality of compatible printer cartridges for my Canon MP 540. So far I could only find on the cartridge itself, it is an "imitation", but not. To the documents or photo's that I have been so for private purposes only I would therefore again buy the cartridges at any time. Try it for yourself and convince yourself.