Toner replacement with miserable performance

At first I was actually quite pleased with the toner replacement. Fast delivery, well packaged and after insertion into the printer first also a very good typeface. But unfortunately, the toner is not for "Much printer". Prints are a few sheets consecutively, so no difference falls on the Samsung toner. But from a pressure of about 20 sheets consecutively allows the print quality on the left side of the paper away noticeably from about 30 sheets, the left side is as good as no longer to read.
Since I have a laser printer because I much Prints is no use of this toner for me and I have a mitlerweile org. Samsung Toner ordered. For people who only occasionally print a page certainly use to, so just 2 stars, for my application actually 0 stars.