| 摘要 |
PROBLEM TO BE SOLVED: To provide an image reading apparatus with high reading accuracy by executing high fidelity correction on a specific pixel.SOLUTION: The image reading apparatus includes a first calculation means for calculating an output value from a photoelectric conversion output value of a photo detection part adjacent to a specific photo detection part in a read-width direction, a second calculation means for calculating a ratio between one value and the other value, one value being an output value of the photo detection part disposed in conveyance direction of the specific photo detection part, and the other value being the photoelectric conversion output value of the photo detection part adjacent in the read-width direction to the photo detection part disposed in the conveyance direction of the specific photo detection part, and a pixel correcting circuit part for multiplying the values obtained by the first calculation means and second calculation means, substituting the value for the output value at the pixel position of the photo detection part specified by a pixel detecting circuit, and then line-outputting it together with the output values at the pixel positions of the photo detection parts not specified by the pixel detecting circuit. |
