Ink Grinding

Ball and pebble mills are generally used for the purpose of paint mixing. The pigment is dispersed in the liquid media using the ball mills. The balls may be stainless steel or stone so that they are non-reactive and inert. the size of the mill or the grinder depends upon the volume of the batch. Often testing gauges are attached to the grinders so as to check the quality of dispersion.

Media mills or impellers are also used for the purpose. Motion is imparted to the media by tumbling, rotation, vibration or using the rods, tubes of agitators. The same process is involved in paint mixing.