A heater for curing an ink design applied to the front surface of a cap comprises an infrared heating unit shaped to generally conform to the horizontal curvature and vertical inclination of the cap front surface. The cap is placed on a tray which is pushed into a heating zone. At the end of a prescribed...http://www.google.se/patents/US5218908?utm_source=gb-gplus-sharePatent US5218908 - Method for curing an ink design on a cap
