A soft magnetic alloy consists essentially of 10 percent by weight\u2266Co\u226622 percent by weight, 0 percent by weight\u2266V\u22664 percent by weight, 1. The present invention also concerns golf balls comprising the reduced-yellowing thermoplastic or thermoset polymer compositions derived from the reaction of a diisocyanate, a polyol or polyamine, and a dicyandiamide. Also disclosed herein is a can-type combustor that includes fluid passageways that perpendicularly impinge the outer surface of a heat shield. This structure can realize an LED printer head which reduces a variation in the resolution of the rod lens array, thereby suppressing linear irregularity, and can thus provide an image having an excellent quality. An input terminal is coupled to the upper resistor and the resistor drift layer.