A control for the electrical curing elements on screen printing apparatus which applies full power to the elements during a heat-up period, and upon attaining a preselected temperature the control switches to a selected lower percentage of full power which continues as long as the apparatus continues...http://www.google.com.au/patents/US5239613?utm_source=gb-gplus-sharePatent US5239613 - Method and apparatus for controlling product curing heater
