Patent ID: 9374497
Filing Date: 2016-06-21
CPC Classification: B28B,B29C,B32B,B33Y,H04N,Y10T

Claim Text:
1. A method of forming a three-dimensional article comprising: sequentially forming a plurality of first two-dimensional layers, each first two-dimensional layer including a first outer edge defining a first boundary of the first two-dimensional layer and a first inner area within the first boundary defined by the first outer edge; forming a second two-dimensional layer adjacent one of the plurality of first two-dimensional layers, the second two-dimensional layer including a second outer edge defining a second boundary of the second two-dimensional layer and a second inner area within the second boundary defined by the second outer edge, the second outer edge being aligned with the first outer edge of the adjacent one of the plurality of first two-dimensional layers, the second inner area having a physical characteristic and a watermark area within the second inner area having a physical characteristic different from the physical characteristic of the second inner area.