Systems and methods for applying for and creating balance transfers with a mobile device are provided. In order to prevent damages to the sweeping lip, the forward area which in use contacts the ground during sweeping operations is configured upwardly elasticly deformable by weakening slots provided in reinforcement structure thereof andor by different elastic characteristics of molded plastic material forming the sweeping lip. The image forming apparatus has a sheet charging apparatus which charges the surface of the image receiving sheet to a polarity opposite to a charged polarity of toner particles, in advance of a transferring process. This separation member is provided at an upper side or a lower side of the subunit, and extends from one side to the other side of the subunit.