A three dimensional printing system which forms a three dimensional article of manufacture through a layer-by-layer process with each layer being formed by selectively curing photocure resin onto a face of the three dimensional article of manufacture comprising: a vessel for containing the photocure resin; a controller ; a light engine including: a light source ; a spatial light modulator that is illuminated by the light source; a system processor for receiving an incoming slice energy data array and light source switching signals, wherein the incoming slice energy data array defines a two dimensional array of energy values that define optical cure energy to be applied versus position in X and Y; an image scaler that receives and processes the incoming slice energy data array and outputs a scaled energy data array after one or more of correcting, calibrating, scaling, and stitching of the incoming slice energy data array; a digital mirror device formatter that receives and converts the scaled energy data into an image frame and repeatedly sends the image frame to the spatial light modulator; a light source driver that receives the light source switching signals characterized in that it further turns the light source on for a cure time duration that temporally overlaps with the repeated image frame. a vessel for containing the photocure resin; a controller ; a light engine including: a light source ; a spatial light modulator that is illuminated by the light source; a system processor for receiving an incoming slice energy data array and light source switching signals, wherein the incoming slice energy data array defines a two dimensional array of energy values that define optical cure energy to be applied versus position in X and Y; an image scaler that receives and processes the incoming slice energy data array and outputs a scaled energy data array after one or more of correcting, calibrating, scaling, and stitching of the incoming slice energy data array; a digital mirror device formatter that receives and converts the scaled energy data into an image frame and repeatedly sends the image frame to the spatial light modulator; a light source driver that receives the light source switching signals characterized in that it further turns the light source on for a cure time duration that temporally overlaps with the repeated image frame. a light source ; a spatial light modulator that is illuminated by the light source; a system processor for receiving an incoming slice energy data array and light source switching signals, wherein the incoming slice energy data array defines a two dimensional array of energy values that define optical cure energy to be applied versus position in X and Y; an image scaler that receives and processes the incoming slice energy data array and outputs a scaled energy data array after one or more of correcting, calibrating, scaling, and stitching of the incoming slice energy data array; a digital mirror device formatter that receives and converts the scaled energy data into an image frame and repeatedly sends the image frame to the spatial light modulator; a light source driver that receives the light source switching signals characterized in that it further turns the light source on for a cure time duration that temporally overlaps with the repeated image frame. <EOS>