Brother MFC-820CW - Manual (Page 159)

Specifications
143
Consumable items
D
Ink The machine uses individual Black, Yellow, Cyan and Magenta ink
cartridges that are separate from the print head assembly.
Service Life of Ink
Cartridge Standard Black - Approximately 500 pages at 5% coverage
Yellow, Cyan and Magenta - Approximately 400 pages at 5%
coverage
The above figures are based upon the following assumptions:
„ Continuous printing at a resolution of 600 × 600 dpi in normal
mode after installing new ink cartridge;
„ The printing frequency;
„ The number of pages printed;
„ Periodic, automatic, print head assembly cleaning (Your
machine will clean the print head assembly periodically. This
process will use a small amount of ink); and,
„ Ink remaining in cartridge identified as ‘empty’ (It is necessary to
leave a small amount of ink in the ink cartridge to prevent air
from drying out and damaging the print head assembly).
Replacement
Consumables LC41BK LC41C
LC41M LC41Y