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Paper money recognition and transmission system for vending machines

Image Number 6 for United States Patent #5485907.

A paper money recognition and transmission system including a housing with a paper money slot, an upper mainframe and a lower mainframe detachably connected together and mounted inside the housing, a transmission unit mounted on the lower mainframe and consisting of a step motor, a belt transmission mechanism, a gear transmission mechanism, a plurality of caps, and two rubber rollers, a paper money recognition circuit, the paper money recognition circuit including sensors controlled to detect and recognize inserted paper money and to turn the step motor forwards, when a true paper money is recognized, causing the inserted paper money to be delivered forwards, the step motor being turned reversely when a counterfeit paper money is detected, causing the counterfeit paper money to be delivered backwards out of the system.

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