A toner cartridge includes a first chamber and a second chamber divided by a partition wall. The upper diaphragm membrane seals against a top sealing surface when the diaphragm is in a first position. The skeleton has a recess and the decorative element has a fastening element which projects into the recess. The reflected radio frequency signals are used to estimate a location of the portable unit with respect to the array of radio frequency antennas in the pad. Stainless steel hydraulic valve components made therefrom have shown improved leakage rate performance with the performance being fairly constant over a period of time for providing a longer functional life for the hydraulic valve component.