I have some 5501i and 3501i that print bad mostly grayscale. Did U132/155/410/412/464. Developer and toner are new and oem. Print quality deteriorates after 1st page, gradually fading the image as you print more pages. When printing Grayscale U089 the defect its more evident in the lighter tones of the grayscale. The darker tones are printed correctly.
Will update with pictures
Will update with pictures
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