Unfortunately, I realized that the black color of the paper dissolves extremely (I tested it with different A4 papers, all normal suitable for laser printers mark paper).
I booklets from prints, traces of paint on the back of the overlying sheet are soon visible. Individual ink particles spread on the printouts. For example, was a train ticket after a few hours folded up in the pocket completely smeared. Also lightly brushing over the term with a finger removes paints and smeared printing.
I expect for this price no extremely durable ink but it should be possible, the prints also practical to use - therefore I renounce gladly the free toner is a promise for a review.
