The present disclosure relates to a system and method for monitoring a print system. The handle is grasped by the operator and the head portion is then abutted a patient’s mucosal surface for sample collection. The sealing member includes a bulk portion, one part of which contacts the surface of the photoreceptor and another part of which is attached to a stationary surface. In particular cases the nitroxyl donor is a nitroxyl-donating diazeniumdiolate, such as Angeli’s salt or IPANO. Accordingly, defective contact with the upper interconnection layer and the problems taking place in forming films can be prevented. This prevents other stations from using DCF contention to seize the channel, until all access points have completed one contention-free session per periodic cycle.