Review on 🖨️ CISinks Universal Toner Refill for Brother TN420 TN450 TN540 TN660 TN720: Exceptional Toner Powder Solution by Don Devine

I used to refill a lot of toner with my other office printers including Brother who I bought this printer for. After refilling, printouts become blotchy and inconsistent. I've tried shaking and aligning the toner, printing clean black sheets, cleaning the drum, disassembling the drum and removing the remaining toner, etc. The printer worked fine before, yes, it was low on toner, but the print quality was poor. not produced. Only buy this product if you are going to buy a new drum and toner and want to waste your time.