The present invention is directed to a three-dimensional printing system
and method, and an article made therefrom. The method of the present
invention includes building cross-sectional portions of a three
dimensional article, and assembling the individual cross-sectional areas
in a layer-wise fashion to form a final article. The individual
cross-sectional areas are built using an ink-jet printhead to deliver an
aqueous fluid to a particle material that includes a first particulate
material, a second particulate material, and a third particulate
material, wherein the first and second particulate materials react in the
presence of the fluid in a period of time, and the third particulate
material reacts in the presence of the fluid to form a solid in a longer
period of time.