| 摘要 |
A paper transportation device 100 is provided with an obliquely transported condition detection unit 404 and a sensor movement controller 402. The obliquely transported condition detection unit 404 is configured to detect an obliquely transported condition of a sheet of paper based on a detection result of the travel-directional front end of the sheet of paper by obliquely transported condition detection sensors 113a and 113b. The obliquely transported condition detection sensors 113a and 113b are arranged in predetermined positions on a document transportation path. The sensor movement controller 402 is configured to move the obliquely transported condition detection sensors 113a and 113b in accordance with the width size of the sheet of paper.
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