| 摘要 |
<p>An image scanning device with a speed compensation unit is provided, which includes a main scanning module, a driving mechanism, a passage for document movement and a speed compensation unit. The speed compensation unit at least comprises one or a group of photoelectric transduction elements (2), arranged on one side of a document movement passage, and a computing module. The photoelectric transduction elements are used for obtaining photographic data with speed characteristics when the documents pass by the main scanning unit. The computing module calculates scanning speed variation parameter curves for the documents according to the photographic data obtained by the photoelectric transduction elements, and repairs, according to the parameter curves, image distortion generated in the direction of movement.</p> |
