These printer cartridges attracted me for their price. I used once 4 cartridges: black, yellow, magenta, black and replaced cyan.J'ai printing problems (half page printed, white stripes in this part) After 5-6 head cleanings, the text is printed in full, but black is pale. These repeated cleaning emptied the cyan and magenta cartridges. These colors do not appear on the test cartridges, although considered filled to the image. Right now I work mostly with black, but it will become quickly annoying. Should we try all the cartridges? but once started, how to keep them?