This is glossy compatible version of Shade 1 black - a "photo black". It can be used for printing on matte papers, but with approximately .15 less dMax. For matte only papers, use Neutral K7 Shade 1 black. For glossy printing, you will require either Selenium K7 shades, or Warm Neutral K7 shades - both of which are our only glossy compatible inks. This ink will also require overprinting with Piezography Gloss Optimizer to remove bronzing and equalize the gloss differential.