| 摘要 |
PURPOSE:To properly move a sheet without meandering even if a rotation member irregularly rotates by providing the sheet with a projecting part whereas providing a roller, which abuts on the sheet, with a groove part and positioning the sheet. CONSTITUTION:The projecting parts 10a and 10a are provided on both ends and on the outside surface side of a sheet member 10; also, for example, the groove parts (recessed parts) 17a-1 and 17a-1, both of which fit in corresponding projecting parts 10a and 10a of the sheet member 10, are provided in the vicinity of both ends of the developing roller 17a. Therefore, even if the sheet member 10 is induced to meander because of the irregular rotation of a rotating drum 11, a driving roller 12, and a tension roller 13, the sheet member 10 is guided by the recessed parts 17a -1 and 17a-1 of the developing roller 17a. Thus, the sheet member 10 can be properly moved without meandering. |
