Patent ID: 7220329

Claim:
A method of manufacturing wallboard with markings thereon comprising the steps of: passing a stream of substantially horizontally oriented cover paper from a cover paper source to a slurry source; positioning at least one printing device on a horizontal element located in between the cover paper source and the slurry source so that the at least one printing device is aligned with the stream of cover paper; connecting a follower arm to the horizontal element; coupling the follower arm to the cover paper; utilizing the at least one printing device to place marking material on the cover paper to make markings on the cover paper in an organized fashion as the stream of cover paper passes the at least one printing device on the cover paper's way to the slurry source; continuously depositing a slurry from the slurry source onto the stream of cover paper; and shifting the position of the follower arm to correspond to any horizontal shift in the cover paper so that the follower arm causes an equal shift in the horizontal element and the at least one printing device as the cover paper passes by the at least one printing device to keep the at least one printing device aligned with the cover paper to make the markings in the organized fashion.