A printer for printing a viscous material at predetermined positions forming a pattern on a substrate. Non-fibrous dielectric material layers are positioned below the signal metal layers and fibrous dielectric material layers are positioned below the powerground plane metal layers. The intensifier control valve and the needle control valve each include a valve member that is movable with respect to a valve seat. Two prosthetic devices are inserted into the intervertebral disk of the spine, and fixed at a predetermined angle.