| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a mobile device that can be used in a cleaner which moves and cleans, for example, the discharge linear material of a charger and that has a mobile body moved by converting the rotating motion of a rotation shaft fixed by winding a spiral linear material around a straight rod into linear motion, the mobile device being able to prevent adhesion and deposit of unnecessary matter such as dust in a gap between the round rod of the rotation shaft and the spiral linear material, and able to stably moving the mobile body, and to provide a charger and an image forming apparatus using the mobile device. <P>SOLUTION: The mobile device comprises the rotation shaft fixed by winding a spiral linear material around a straight round rod; and the mobile body that has a power receiving hole through which the rotation shaft extends and has a projection formed on its internal circumferential surface so as to enter between the adjacent portions of the spiral linear material, and that moves along the rotation shaft as a result of rotation of the rotation shaft and contact of a part of the spiral linear material with the projection of the power receiving hole. Coating is formed on the surface of the rotation shaft, and the boundary portion between the round rod and the spiral linear material is covered with the coating. <P>COPYRIGHT: (C)2012,JPO&INPIT |
