| 摘要 |
There is provided an image reading apparatus optically reading a document image to produce image data of the document image. This apparatus comprises a first line sensor performing the optical reading and having a predetermined number of pixels and a second line sensor performing the optical reading and having the number of pixels larger than the predetermined number of pixels. In this apparatus, using both of first image information outputted from the first line sensor and second image information outputted from the second line sensor, third image information reflecting resolution of the second image information is produced. Pieces of the first and third image information are then subjected to application of compression, the compression applied to the first image information and that to the third image information being mutually. Resultant pieces of the first and third image information are mutually synthesized to produce the image data of the document image.
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