Pure black driver problems

[CherylO-Xerox]

Hi tmax,

Thank you for using the Support Forum. Please take a look at these solutions for mottled or blotchy image. If these solutions do not help please consider contacting your support centre for further assistance. 

[tmax]

Hi all,
I have a big problem with a pure black image and in the choice of the driver.
If pure black frame image spotted out and if it goes right frame.
The problem is that I need to throw it with pure black to treat the interior in bn.
I tested with models Xerox and more surprisingly the same thing happens.

Regards and thanks in advance to everyones.