Brother MFC-3100C - Manual (Page 198)

S - 4 S P E C I F I C A T I O N S
BHLMFC-US-MFC3100C-FM5.5
Consumable Items
Ink Black and 3 individual color ink cartridges
separate from the two print heads.
Service Life of Ink
Cartridge Approximately 950 page/Black cartridge at 5%
coverage with 600
× 150 dpi resolution (Draft).
Approximately 450 page/Color cartridge at 5%
coverage with 600
× 150 dpi resolution (Draft).
Note
These numbers are based on consecutive
printing; the numbers will vary based on print
frequency and number of pages.
The MFC periodically cleans the print head to
maintain print quality. This process consumes a
small amount of ink.