Gray scale

On the other hand, if you print on absolutely non-absorbent materials, such as glass, for example, at gray level 8 (original melting) there is an unnecessary amount of ink on the mentioned glass.
Of course, it takes a long time to dry, and you also have an unnecessarily higher consumption of the ink itself. It is therefore necessary to adjust this parameter according to your needs and material.

A sample of several settings when printing on paper here: