Patent ID: 9144940
Filing Date: 2015-09-29
Classification: B29C,B29K,B33Y,G03G,Y10T

Abstract:
1. A method for printing a three-dimensional part and a support structure with an electrophotography-based additive manufacturing system, the method comprising: providing a support material compositionally comprising a first charge control agent and a first copolymer having aromatic groups, (meth)acrylate-based ester groups, carboxylic acid groups, and anhydride groups; providing a part material compositionally comprising a second charge control agent, and a second copolymer having acrylonitrile units, butadiene units, and aromatic units; developing a support layer of the support structure from the support material with a first electrophotography engine; transferring the developed support layer from the first electrophotography engine to a transfer medium; developing a part layer of the three-dimensional part from the part material with a second electrophotography engine; transferring the developed part layer from the second electrophotography engine to the transfer medium moving the attracted part and support layers to a layer transfusion assembly with the transfer medium; and transfusing the moved part and support layers together to previously-printed layers with the layer transfusion assembly.