As the pulp moves along with the gauze band it passes under a roller called the "dandy roll."
As the paper comes from the wires it passes under the dandy roll.
The continually moving pulp layer assumes greater consistency the nearer it approaches to the dandy roll.
C—The water-mark in paper is effected by raised lines on the dandy roll.
The suction boxes accelerate the expulsion of water, and the dandy roll closes the fibers together as the film passes beneath it.