Fabrication of 3d objects via electrostatic powder deposition

A method of fabricating an object, the method comprising:

• a) depositing a first layer of first object material on a support substrate electrode;
• b) applying an electrically conductive agent material onto the first layer on the support substrate electrode;
• c) depositing a first layer of charged powder on an intermediate substrate;
• d) conveying the first layer of charged powder on the intermediate substrate proximate to the first layer of first object material on the support substrate electrode;
• and
• e) applying a transferring electric field to cause transfer of the first layer of charged powder from the intermediate substrate onto the first layer on the support substrate electrode, to form a first powder layer on the first layer on the support substrate electrode.

An object comprising an alternating sequence of layers of object structural material and a layer of electrically conductive material, wherein the layers of object structural materials are formed by repeating the steps of:

• a) sequentially forming powder layers on a powder transfer member by an electrophotographic imaging process;
• b) electrostatically transferring the layers onto a support substrate;
• c) fusing the layers to form a portion of the object, and
• d) depositing the layer of electrically conductive material onto a top layer of the portion of the object and electrically connected with the conductive support substrate.