An image forming apparatus including an image bearing member having a static friction coefficient of from 0. The technique also suppresses pops and clicks when the Class D amplifier enters or exits standby mode. The alignment system employs the external measurements to provide corrective positioning feedback to more precisely register the patient and align them with a radiation beam. The rolls achieve a long service life without applying excessive force to the glass ribbon or generating high levels of particulate contamination. Accordingly, when the free layer is subjected to magnetic incursions from a rotating disk in a disk drive, the free layer maintains a stable magnetic condition so that resistance changes of the free layer are not altered by differing magnetic conditions of the free layer.