| 摘要 |
PROBLEM TO BE SOLVED: To provide a device for correcting skew of inserted paper sheets capable of correctly detecting the skew of paper sheets and its skew direction by a simple structure, and correcting the skew. SOLUTION: The skew correcting device comprises a conveyor having a conveying passage, a light emission unit 3, a light reception unit 4, and a detection device 2 having a light introducing passage 51, a light outgoing passage 52, a light relaying passage 53, and a light guide body forming a bypass light guide passage 54 directly guided to the light reception unit. The light emission unit and the light introducing passage of the light guide body, and the light reception unit and the light outgoing passage of the light guide body are arranged opposite to each other across the conveying passage to detect the light quantity synthesizing the light quantity of the outgoing light a transmitted through the front end portion of the paper sheets passing through between the light emission unit and the light guide passage, the light quantity a1 of the outgoing light a transmitted through the front end portion of the paper sheets passing through between the outgoing passage and the light reception part, and the light quantity a2 of the outgoing light transmitted through the bypass light guide passage and directly incident on the light reception unit. COPYRIGHT: (C)2006,JPO&NCIPI
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