Installed between the OPC drum and magnetic toner removal roller, the air gap rollers provide the proper spacing for toner transfer between the drum and toner removal roller. Maintaining a constant and correct air gap is important for image quality. The air gap rollers are susceptible to wear during normal cartridge operation, as well as breakage. As a smaller component, the air gap rollers are also easily lost. To ensure proper imaging, make sure both air gap rollers are in good condition (not excessively worn) and present in the cartridge. For best operating results, replace both air gap rollers every other remanufacturing cycle.