INPUT PANEL APPARATUS, IMAGE FORMING APPARATUS USING THE SAME, AND METHOD THEREOF

摘要

An image forming apparatus to provide a visual feedback in response to a manipulation of a navigation key includes a display panel unit, a navigation which is selectable and rotatable, to perform a menu navigation over the display panel unit according to at least one of a selection and a rotation thereof, a state indicating unit to operate in a display pattern to correspond to a manipulation state of the navigation key, and a control unit to control the state indicating unit according to the manipulation state of the navigation key. As a result, a direct, instant, and visual feedback is provided.