| 摘要 |
PROBLEM TO BE SOLVED: To provide a paper thickness detecting device to serve as both a paper thickness sensor and a forward end sensor by providing a function to detect not only the thickness of a paper sheet but also the forward end of the paper sheet. SOLUTION: The paper thickness detecting device comprises the paper thickness sensor 400 to detect a paper thickness by detecting a roller distance between transport roller pair 251 to transport the paper sheets with the paper sheet nipped therebetween and detect a paper thickness, and a forward end discriminating means 302 to discriminate the forward end of the paper sheet from the output state of the paper thickness sensor 400 generated when the forward end of the paper sheet is brought into contact with the transport roller pair 251.
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