QTR-Quadtone RIP

On my Epson 2400, I want to try printing with only my matte black ink
cartridge, not the light black or the light-light black. (I'm tryng to
create transparencies that I'll use for exposing photo polymer etching
plates and I need a dense dot/grain pattern (closer to a Bitmap), and
not a continuous tone image as you would want for fine art printing on
paper.)

What would be my curve creation settings to do this?  As a starting
point and best guess, I'd say: 

* Black Ink selected (showing "gray ink"), at Density of 100, I but
don't know what "ink limit" should be (right now its blank). 

* All other inks "not used."

* By default "Default Ink Limit" is at 55. Is this the overall amount
of ink laid down?  And would I keep it at this setting? 

Again, thanks for your help, David.