An article to be worn, such as a badge, displays indicia such as identification and advertising. In another aspect, the switch assembly enables a larger area of illumination on an illuminated film by interposing a light pipe between an actuation dome and the film, the light pipe also serving as a plunger element to enable touch actuation by pressing the film, moving the plunger towards the dome and activating the dome. Therefore, the preliminary ejection outlet provided on the platen can be commonly used for various recording heads having different nozzle lengths and positions, hence reducing manufacturing costs owing to the common utilization of the platen parts.