The purchase was a first attempt by a "non-original". The used printer is a Samsung CLX-3185 FN. A few days ago I had the toner cartridge into the printer and was pleasantly surprised at how good the quality of the printouts. In my opinion, there is no visible difference from the original. The durability of the cartridge and the achievement of the specified 2500 pages (the original only creates 1500 pages), I can not yet assess unfortunately, only this: Thumbs up for this product ;-)