A selective laser sintering apparatus and method is disclosed, in which the laser power is controlled according to the scan velocity. The scanning system, which includes a pair of galvanometer-controlled mirrors for directing the aim of the laser beam, generates signals indicative of either the position...http://www.google.co.uk/patents/US6085122?utm_source=gb-gplus-sharePatent US6085122 - End-of-vector laser power control in a selective laser sintering system
