| 摘要 |
An image reading device is operable in a manually placed document reading mode offered by a manually placed document reading section and an ADF document reading mode offered by an ADF document reading section. Reading mode detecting section detects in which mode a document to be read is in. First reading-speed setting section sets a reading speed of the ADF document reading section to a predetermined reading speed, upon detection by the reading mode detecting means that the document to be read is in the ADF document reading mode. Second reading-speed setting section sets a reading speed of the manually placed document reading section to a predetermined reading speed sufficient to reduce image vibration caused by reading by the manually placed document reading section, upon detection by the reading mode detecting section that the document to be read is in the manually placed document reading mode.
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