Brother have taken their time when designing this TN3520 mono laser
toner cartridge and this is evident in the quality of print that it
produces. Each of the genuine TN3520 has been produced to an
exceptionally high quality that is second nature to Brother.
As a ultra high capacity black toner cartridge the Brother TN3520
has an estimated page yield of 20,000 pages to give you a great
cost per page and is compatible with all of the printers listed on