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  1. BlueToBits

    Filling CMY cartridges with black ink to get opaque black?

    Hi. I need to print black on transparency as opaquely as possible using a HP7500 E910 printer. It's a back-lit sign with clear letters on a black background 400mm x 300mm. I have worked out how to force the printer to print a composite black using CMYK which works best for the self-adhesive...
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