Patent attributes
A 3-D printer apparatus (three-dimensional printer apparatus) includes a bottom structure of a tank. The tank defines a printing area located above and spaced apart from the bottom structure. The bottom structure includes oxygen releasing electrodes. A resin curing device is configured to selectively provide light to the printing area. The electronic controller controls operation of the resin curing device and the oxygen releasing electrodes. The electronic controller selectively operates areas of the oxygen releasing electrodes thereby releasing oxygen to predetermined locations below the printing area in order to temporarily prevent the polymerization of a polymerizable resin within predetermined locations of the printing area during the printing process.
