An upstream-side printing unit group and a downstream-side printing unit group, respectively, are driven by separate prime motors and synchronously controlled. The dissipation device has a first blower, a second blower, and three heat dissipation fins. , maintain continence andor produce micturition, andor provide malefemale sexuality responses, andor provide bowel responses. Each collapsible wall includes a flexible elastomeric membrane having hinge lines at which the membrane is configured to bend such that the membrane is transitional between collapsed and expanded configurations.