Patent ID: 7531055

Claim:
A method of producing a floor panel for an elevated floor, the method comprising the steps of: (a) printing a plurality of grid lines in a rectangular pattern on a substrate surface, some of said grid lines being located along edges of the substrate surface and some of the grid lines being located at an interior of the substrate surface forming interior grid lines; (b) cutting the substrate surface along and through only at least some of the interior grid lines so that the grid lines form a border of a panel, the interior grid lines having a thickness approximately double that of the edge lines so that, after cutting, each panel has the border of a uniform thickness; (c) applying a protective wear overlay over said substrate surface and over the printed grid lines, said border being protected by the protective wear overlay and being flush with a printed portion and a non-printed portion of the substrate surface; said steps (b) and (c) being performed in either order.