COPYING MACHINE

摘要

PURPOSE:To enhance the positional accuracy of a toner concn. sensor relative to a teansfer belt. CONSTITUTION:The transfer belt 65 is mounted on a front plate 90 and a rear plate 91. The rear plate 91 is fixed to a copying machine main body and the front plate 90 is fixed via a positioning plate 94 to the copying machine main body. A 2nd transfer device 72 is mounted on a supporting plate 100. The rear wall 101 thereof is supported by the rear plate 91 and the front wall 104 is supported by the front plate 90. The toner concn. sensor 81 is mounted on the front plate 90 and is positioned relative to the transfer belt 65.