Ultraviolet (UV) curing lamps based on Light Emitting Diode (LED) technology have progressed to the point that they represent a mainstream curing technology in the UV digital inkjet printing market. The historical obstacles of lamp power, cost, and optimized ink chemistry have largely been resolved and the result is a quantum leap in performance resulting from the inherent characteristics of properly designed UV LED lamps; high power, extremely long lifetime, exceptional reliability, consistency and uniformity of UV output, far lower heat load on the curing surface, superior health, safety, and environmental protection, and dramatic reduction in energy.