| 摘要 |
There is provided an image reading apparatus including: a light source with arrayed light emitting elements; a light guide unit that scatters light emitted from the light source such that the light intensity is greater at end portions than at the central portion in the array direction of the light emitting elements, and guides the light to a reading position of a medium to be read; and an optical system that guides the light reflected at the reading position to a light detection unit that detects the light intensity.
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