In a semiconductor device having a pad, a first conductor and a second conductor are arranged at a surface of the pad. The system comprises a pair of pivoting arms, each arm supported by a corresponding bulkhead. The solid precursor is transformed into a liquid state in the storage container. A controller adjusts the control voltage associated with each of the plurality of laser diodes for a first line of pixel data in response to a determination of a level of contrast associated with the first line of pixel data.