| 摘要 |
PROBLEM TO BE SOLVED: To improve accuracy of edge detection. SOLUTION: An image reading apparatus 10 includes a first imaging unit 20 and a second imaging unit 25. The first imaging unit 20 and the second imaging unit 25 are provided while being opposed to each other with a document P interposed therebetween. The first imaging unit 20 includes a first light source unit 22 and a first image sensor 24. The second imaging unit 25 includes a second light source unit 27 and a second image sensor 29. The first light source unit 22 guides a direct light to the second image sensor 29. The second light source unit 27 guides a direct light to the first image sensor 24. The image reading apparatus 10 detects an edge of the document P imaged by the first image sensor 24, with the direct light guided from the second light source unit 27 to the first image sensor 24. Furthermore, the image reading apparatus 10 detects an edge of the document P imaged by the second image sensor 29 with the direct light guided from the first light source unit 22 to the second image sensor 29. COPYRIGHT: (C)2011,JPO&INPIT
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