In stereolithographic apparatus and method, a mask is formed on a light-transmissible member (glass plate) on the basis of stereolithographic data for one layer of photohardenable resin; photohardenable resin of one layer is successively supplied to form an unhardened resin layer of photohardenable resin;...http://www.google.com.au/patents/US6627376?utm_source=gb-gplus-sharePatent US6627376 - Stereolithographic apparatus and method for manufacturing three-dimensional object with photohardenable resin
