The present disclosure relates to a jack assembly including a jack mount having a front side and a rear side. The invention relates specifically to a novel family of G protein-coupled receptors and a novel family of two-transmembrane segment proteins that are expressed in dorsal root ganglia, and a method of screening for genes specifically expressed in nociceptive sensory neurons. The internal area has an interior periphery and an exterior periphery, at least one rail, at least one mobile camera, that is movably mounted on the at least one rail, and at least one motor. A manager manages, every time a printing operation is performed, the regions subjected to the printing operation such that the regions are divided into print guaranteed regions and print non-guaranteed regions.