Color stereolithography based on time-pressure dispensing process

Color stereolithography aims to fabricate prototypes including different color areas. Stereolithography prototypes are semitransparent. Thus, much information can be shown through the color and shape of inner area. A novel color stereolithograhphy method based on time-pressure dispensing process is proposed to fabricate color prototypes in this paper. Some new devices were added to stereolithography equipment. A positioning control system is designed to conduct the motion of syringe which extrudes color resin. The extruding model of resin LPR2001 is analyzed. Experiments were carried out to fabricate simple color stereolithography prototypes. Extrusion and rheological behavior of color resin is analyzed.