I am using Lexjet Water-resistant satin cloth on my HP DesignJet Z3200 to make lamp shades.  See https://photo-lamps.com for examples.  The only way I have found to get enough ink for dark blacks and saturated colors from back-light is to print twice by rewinding the roll to the same starting point, with the problem that registration is not always good.  I have tried the HP profiles for HP Transparency Film and for other media such as canvas that take a lot of ink and they all give me much less than double the ink.  Surely there must be a way to modify the printer calibration, driver settings, Qimage settings, and/or ICC profiles to get double the ink.  Any ideas?

David