Printing performance falls far short of the manufacturer's instructions

Unfortunately, I had - despite the weak Cartridge Yield often mentioned - not be deterred from appointing an original cartridge. It was probably beyond my imagination that an original cartridge not herbibt what it promises. I have the cartridge used 6 weeks and printed significantly less than 500 pages! Neither tables nor any pictures in many shades of gray! Only text and not all Roman sites. "Normal" text processing. The product I can conclusively assessed as not recommended. I will, when this printer "by" is also no longer buy printers from Brother, because me the quality of their product accessories more than "angry".