CMYK Pure Black Process

[On]*, [Off]

This setting enables you to specify how monochrome data (C=M=Y=0) should be printed when the device dependent CMYK data is processed using the CMYK simulation profile of the machine.

[On]

Monochrome data (C=M=Y=0) is printed using the black (K) toner only, regardless of the selected Output Profile setting.

[Off]

Monochrome data (C=M=Y=0) is printed using CMYK toners based on the selected Output Profile setting.

NOTE
In combination with certain settings, monochrome data (C=M=Y=0) may be printed using the black (K) toner only, even if you select [Off]. The following are examples.
When you select [On] for [Pure Black Text]
When you select [None] for [CMYK Simulation Profile]
When you select [TR Normal] or [TR Photo] for [Output Profile]
When you select 'Use 100% GCR Profile' in the printer driver
If you select [None] for [CMYK Simulation Profile], the CMYK Pure Black Process setting is not applied.