The invention relates to copying light conditions from one location and pasting into or providing similar light conditions to another location in a lighting system. In one embodiment, the disk drive includes a base and a top cover. At the time of initial start-up, at least the low-grade humidified type fuel cell unit is operated, and then only the humidified type fuel cell unit is operated. The assembly further comprises a thermal bend actuator, having a plurality of cantilever beams, for ejecting ink through the nozzle opening.