Brother MFC-L8600CDW - Manual (Page 237)

Specifications
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Important information for the toner cartridge life
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Color/Mono setting on the printer driver
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Users can change the Color/Mono settings on the printer driver as follows:
 Auto
The machine checks the content of the document for color. If color is detected anywhere in the
document, it will print the whole of the document using all the colors. In other words, it will mix
some of the toners to help achieve every shade detected in the document, increasing the
density of toner applied to the page. If no color content is detected, it will print the document in
monochrome.
The default setting on your machine is Auto.
NOTE
The machine’s color sensor is very sensitive and may perceive faded black text or an off-white
background as color. If you know that your document is black and white and you want to
conserve color toner, select Mono mode.
 Color
Whether the document contains color or just monochrome, your machine will print the
document using all the colors.
 Mono
Select this mode if the document has only black and grayscale text and/or objects. If your
document contains color, this mode prints the document in 256 levels of gray using the black
toner.
NOTE
If either the Cyan, Magenta or Yellow toner reaches the end of its life while printing a color
document, the print job cannot be completed. You can cancel your print job and choose to start
the print job again in Mono mode, as long as Black toner is available.
For more information about the settings in the printer driver, see Software and Network User's
Guide.
Toner Cartridge Life
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This product detects the life of the toner cartridges using the following two methods:
 Detection by counting the dots of each color that are necessary to create an image
 Detection by counting the rotations of the developer roller
This product has a function that will count the dots of each color used to print every document
and the rotations of each toner cartridge’s developer roller. The print operation will stop when
either one of the upper limits are reached. The upper limit is set above the number of dots or
rotations that would be required for the cartridge to perform consistently with its advertised
page yield (for more information on page yield, please visit http://www.brother.com/pageyield).
This function is intended to reduce the risk of poor print quality and damage to the machine.