Embodiments of the present invention may prevent an afterimage-generating wrong discharge when a plasma display panel is driven. Objects are kept in a micro environment. The rotor case also includes a slide valve supporting member that is fixed on an inner wall of the rotor case. The execution of the first instance is resumed and data from the persistent memory area is restored in the first instance. A locking sleeve is added to lock the elastic device against distortion and movement to the release configuration. The rotor tines include a first section extending a first distance from an insulating layer of the rotor tines and a second section extending a second distance from the insulating layer in an opposite direction from the first section.