I have been using my new 8600 for about 6 weeks, including some heavy printing and copying over the holidays. Last week I noticed a degradation in the print quality. I am getting "blank" zones intermittently when printing. This effect is noted in both black-and-white and full color printing. The "blank" is like a vertical line that runs partway up and down the page vertically. It doesn't go all the way to the top, nor all the way to the bottom. It isn't in the same spot every time. I have changed black and color cartridges twice. I have performed all the head cleaning and adjustment tests. I have cleaned the platen (although what a dirty platen would have to do with a print job -- not a copying job nor a scan -- doesn't make sense to me anyway). Help...
↧