Printing 3d parts with controlled surface finish

A method for printing a three-dimensional part and a support structure with an electrophotography-based additive manufacturing system, the method comprising:

• providing a removable support material compositionally including support material particles;
• providing a first part material compositionally including first part material particles;
• providing a second part material compositionally including second part material particles, wherein an average size of the first part material particles is at least two times an average size of the second part material particles;
• 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 large-particle part layer corresponding to a predefined first portion of the three-dimensional part from the first part material with a second electrophotography engine;
• transferring the developed large-particle part layer from the second electrophotography engine to the transfer medium;
• developing a plurality of small-particle part layers corresponding to a predefined second portion of the three-dimensional part from the second part material with one or more additional electrophotography engines;
• transferring the developed small-particle part layers from the one or more additional electrophotography engines to the transfer medium;
• and
• transfusing the transferred support layer, large-particle part layer and small-particle part layers together to previously-printed layers using a layer transfusion assembly.