Ok thanks, I was about to buy another cartridge but did some tests before. I've discovered that the color black is more apparent than other colors. Which means other colors also ghost but really really fade (hard to see), but still, this change the problem. Sorry for this mistake. So since it's not only the black and I've changed the fuser, reset the printer and update my driver, what would you suggest to test?
Thanks for you help, it's really appreciate.
