A detergent composition is described which is a solid homogeneous, evenly dispersed composition containing anionic and nonionic surfactants, soil suspending agents, chelating or sequestering agents, and alkaline builders. Each part of the dividing element is movably arranged on a respectively opposite side wall of the pocket, as well as at least one clamping element which is disposed between the parts of the dividing element and can be moved within the pocket independently from the dividing element, in order to clamp bank notes disposed in the pocket inside the pocket. Such walls may be used in soil formations having relatively short standup times and may be installed in tiered sections against existing vertical slopes. The power supply voltage or headroom is maximized or frozen at the value of the last detection cycle if a fault or impairment, respectively, of the power amplifier is detected. The cylinder includes a supply path which communicates with the liquid space and the at least one through hole. At least the third pitch increases with distance from the center toward the periphery of the imaging surface.