I just wondered why this toner got from Hainsberger so many positive reviews here. Especially the reviews from people who have not yet tested the toner extensively (only a few dozen copies or only two weeks use) I found odd. Well, after delivery it was clear the reason for this saying: In my toner a "voucher" from Hainsberger was. Specifically this is not a voucher, but the invitation to write a positive product review. Then you should send an email with the user name (for the purpose of assigning the review) to Patronenbob to get 1x free toner. It is openly stressed that these positive reviews would be the best advertisement for Patronenbob and therefore spendieren as "thank you for your trouble," a Free Toner.
The "voucher" does not indicate an expiration date or a time limit of this action is the way to find.
I have this toner only for a few hours in use, but only for these free toner scam I now give only one star, so that other customers are warned that they take all the positive reviews more closely. I think that one can evaluate toner only really when you have completely used up a cartridge is completely empty. Statements such as "I printed 20 pages, he can not blur = 5 Star" or "just inserted, to see stripes on the printout = 5 stars" are useless in my opinion.