Artist that does the inking.

The artist that lays the inks over the penciler's artwork.

The inker is one of the two line artists in a traditional comic book, or graphic novel. After the penciller gives a drawing (or copy of the drawing) to the inker, the inker uses black ink, usually India ink, to produce refined black outlines over the rough pencil lines. The ink may be applied with a pen or a brush, and many inkers use both.

One who, or that which, inks; especially, in printing, the pad or roller which inks the type.