If that is just a black and white printer, just make a CMYK document. And then set up that color as 100K
If that is a color laser, then things get more tricky, because you need to find out what it does with color. Can it even correctly handle 100K? Does it print that only in black? And then of course: will you get the best result with 100K printing?
You have already found out that the material might give you issues. So basically you would need to test this.
Or maybe someone chimes in who has done exactly the same and can give you the values that work.
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