Safety apparel andor non-apparel items that filter from the air one or more airborne particles andor undesired gasses to provide safety to a human andor non-human from potentially unhealthy airborne particles. When the contents server receives a request for first contents from a terminal, it provides the first contents to the terminal. The control section compares the image forming size with the paper sheet size, and outputs, if the image forming size exceeds the paper sheet size at least in either of a lengthwise direction and a lateral direction, a notice signal to cause a notice to that effect. The voltage detector detects a voltage applied to the heater.