Conventionally, waveguide terminals formed in a plurality of dielectric substrates are joined together by mounting the dielectric substrates on carriers and fastening them to a waveguide adapter with screws. Where the sections are joined together there is a recess and key arrangement. The multi-dimensional data are stored in a multi-dimensional database that is accessed by the graphical user interface. If payments have been received, the convenient payment receiving center can obtain one or more codes from an automated code delivery computer. In a single step, both the protected area of the first layer and the non-protected region of the second layer are removed to form an ink flow feature, a bubble chamber or an orifice of the nozzle plate. The retaining wheels 14 have friction areas 14a and sliding areas 14b such that both a sliding area 14b and a friction area 14a cooperate with each groove 2 of the singler roller 1.