Of course, one is always wary of alternative ink and also I had my doubts whether to buy or equal to 20 cartridges. I shall be brief: cover up the flashing cartridge taken out, used the new, light up again permanently, to cover, printed test page. finished. A PDF document with color text and a photo printed on it - well. There are in these cartridges currently no reason even deduct a star. Whether the leak sometime and mess up the printer, of course I do not know today. But this would then probably ever mentioned my predecessors.