Unfortunately, the quality can not keep up with an original cartridge

The printed "black" is significantly weaker than that of an original cartridge and is in my opinion not to print important documents, because it gives a very cheap impression. On top of that I always have to clean the print head after a few printed pages, as the cartridge runs out apparently something on paper and thus only one (strong) smeared letters are to read.
I had sometimes even ignore luck with "cheap cartridges", but in this case I can, despite the more favorable price than the much poorer print quality is not unfortunately. Thus, I can not recommend the cartridges that I have received.