“We have tried all colors for this unit and have found that after 4 months of use (right after guarantee ends) we begin to have heavy dusting or streaking on our pages. This has occurred on all the cartridges we have purchased. Like clockwork - 4 months out and the dusting starts - and the cartridges still register as being half full. We have tried running a cleaning page. cleaning the printer etc and it helps for a few pages, but then starts dusting again. I often print 10-30 pages at a time and the first 5 will be ok but then it starts dusting and as it gets closer to the end the edge dusting gets heavier. So in the long run, not saving $ as I am having to purchase more often and before the cartridge is empty.”
“Just replaced the first Q6511x. It kept printing pages with nothing running down the middle of the page. 3 times it happened and 3 times I removed the cartridge and tilted it back and forth before replacing it. It would work for a day or two. Each time I generated a supply report and had over 20% of toner remaining. I got tired of wasting paper so I put the new one in. Turns out that this toner cartridge is such a good value.”
“I had a problem with the black, it started out fine. Then started making black lines, after a while I couldn't use it anymore after it shaded the entire page.”
“Put in the first cartridge as soon as it arrived. All of the prints come out with black blotches along the right edge of the paper. I did a printer test page and that came out clean. Tried printing again and got more blotches. I put the old original HP cartridge back in and didn't have the problem. Put the new cartridge in from Ink Toner Store and have the same blotches. Very unhappy with this product.”
