Patent ID: 7300613

Claim:
A process for producing a three-dimensional model, the process comprising: a step (layer formation step) of forming above a support a layer of a powder material, the layer having a predetermined thickness; a step (cross-sectional shape formation step) of imagewise bonding the powder material layer by a binder according to the cross-sectional shape of a modeled object; sequentially repeating the above steps; wherein the powder material has an average particle size of 30 μm or less; wherein the powder material: binder ratio by volume of the powder material to all binders is 90:10 to 25:75; wherein, in the cross-sectional shape formation step, the binder comprises an ultraviolet-curing compound and a region to which the binder has been applied is cured by exposure to ultraviolet rays; wherein the amount of binder applied onto the outermost layer of the model is 1.05 to 5.0 times the amount of binder applied onto the interior of the model; and the surface gloss of the three-dimensional model obtained when measured at 20° being 20% or more.