FAULT DETECTOR FOR COPYING MACHINE

摘要

PURPOSE:To prevent the failure of parts at the time of overloading and to prevent the exertion of an influence on a user's copying operation by mounting a driven or driving side gear shaft in such a manner that said shaft can be displaced when the load of toner recovery attains a specified value or above and providing a detecting member for detecting the displacement thereof and a display device. CONSTITUTION:The driven or driving side gear 12 or 11 shaft is so mounted to a copying device provided with a driving transmission device using the gears 11, 12 for recovering the waste toner in such a manner that said shaft can be displaced when the load of the toner recovery attains the specified value or above. The detecting member 19 which detects the displacement thereof and the display device are provided. The fault display is kept flickered in an operation part until the copying mode of that time ends so that the copying to a prescribed number of copies is allowed. The fault display is thereafter lighted by the operation part to prohibit the copying. The failure of the parts at the time of the overloading is thereby prevented and no influence is exerted to the user's copying operation.