An email message is filtered to determine whether or not it is an undesired email message that originates from an undesirable domain, such as, for example, a domain designated as originating from an undesirable geographic location. Additionally, the developed photoresist can be cleaned using a second fluid including supercritical carbon dioxide and a solvent such as methanol, ethanol, isopropanol, and xylene. The microcomputer also has an anomaly determining section, which detects an anomaly if a failure of electric current flow has occurred in any one of phases of a motor.