The ink vehicle is the fluid part of the ink that
transports the pigment onto the substrate. This is typically an
oil based material.
The pigment is the part of the ink that imparts
gloss, color, texture, and other characteristics to the printed
image. Pigments can be black, white (either opaque or
transparent), and colored. The colored pigments are usually
produced from either mineral sources or from derivatives of
organic coal tar. Other materials such as metallic powders are
used for specialty inks.
