Electrostatic 3-d printing system having acoustic transfer and corotron

A three-dimensional (3-D) printer comprising:

• an intermediate transfer surface;
• a first color development station positioned to electrostatically transfer a first color material to said intermediate transfer surface;
• a second color development station positioned to electrostatically transfer a second color material, having a different color than said first color material, to said intermediate transfer surface;
• a support material development station positioned to electrostatically transfer a support material to a location of said intermediate transfer surface where said first color material and said second color material are located on said intermediate transfer surface, said support material dissolves in different solvents relative to solvents that dissolve said first color material and said second color material;
• a transfuse station comprising a roller on a first side of said intermediate transfer surface supporting said intermediate transfer surface, and a transmission device on said first side of said intermediate transfer surface;
• a platen moving relative to said intermediate transfer surface, said intermediate transfer surface electrostatically transfers a layer of said first color material, said second color material, and said support material to said platen each time said platen contacts a second side of said intermediate transfer surface at said transfuse station to successively form layers of said first color material, said second color material, and said support material on said platen, each of said layers is on a discrete area of said intermediate transfer surface and is in a pattern, and said first side being opposite said second side;
• a heater adjacent said platen, said platen moves to said heater to heat said layers and join each of said layers together;
• a pressure roller adjacent said heater, said platen moves to said pressure roller to press each of said layers together;
• a charge generator positioned adjacent said transfuse station and positioned to transfer a charge to said layers on said platen after said heater heats said layers and said pressure roller presses said layers;
• and
• a curing station positioned to apply light to said layers to cure said layers to one another on said platform.

A three-dimensional (3-D) printer comprising:

• an intermediate transfer belt (ITB);
• color development stations positioned to electrostatically transfer ultraviolet (UV) curable build materials having different colors to said ITB;
• a support material development station positioned to electrostatically transfer a support material to a location of said ITB where said build materials are located on said ITB, said support material dissolves in different solvents relative to solvents that dissolve said build materials;
• a transfuse station comprising a roller on a first side of said ITB supporting said ITB, and a transmission device on said first side of said ITB;
• a platen moving relative to said ITB, said ITB electrostatically transfers a layer of said build materials and said support material to said platen each time said platen contacts a second side of said ITB at said transfuse station to successively form layers of said build materials and said support material on said platen, each of said layers is on a discrete area of said ITB and is in a pattern, and said first side being opposite said second side;
• a heater adjacent said platen, said platen moves to said heater to heat said layers and join each of said layers together;
• a pressure roller adjacent said heater, said platen moves to said pressure roller to press each of said layers together;
• a charge generator positioned adjacent said transfuse station and positioned to transfer a charge to said layers on said platen after said heater heats said layers and said pressure roller presses said layers;
• and
• a curing station positioned to apply UV light to said layers to cure said layers to one another on said platform.