No sooner had the supplied toner installed in the printer, it only took about 1-2 weeks until the print image began to show Error: Small blue dots, a pink gradient on the sheet edge. Also, a blurred printed image was established. First, we did not assume that it may be caused by toner. But after several customers who have had a similar experience with "foreign" -Toner, we now replace with original toner. Too bad!