A color thermal printer is provided with a humidity sensor and a paper type discerning sensor. A multi-unit railroad car has an odd number of railcar units joined end to end by articulated connectors supported by railcar trucks. In other embodiments, the invention involves an interconnect system including interconnects, single ended drivers, and single ended hysteretic receivers connected to respective ones of the interconnects. The reflective contrast reduction preventing electrodes are in an electrically floating state. One end of the reinforced costal margin is integrally linked to the pressure head, and the other end integrally linked to the directional jack. A conductive metallic shielding cover is arranged between the bottom cover having the control baseboard and the inner cover to cover the bottom cover including the control baseboard.