This invention relates to a printing apparatus and control method thereof. This invention also provides compositions comprising a compound of this invention and the use of such compositions in methods of treating diseases and conditions that are beneficially treated by administering an \u03b11-GABAA receptor antagonist or an \u03b12- andor an \u03b13-GABAA receptor partial agonist. Plate contacts are preferably made through implanted regions extending to or between dopant diffused regions forming a capacitor plate.