| 摘要 |
An illuminating portion includes: a readout light source; a focusing optical system; and a pre-exposure light source. The readout light source includes a plurality of LED's, which are arranged linearly in the Z direction. The focusing optical system includes two cylindrical lenses that extend in the Z direction, and focuses readout light, emitted from the readout light source, as a line on an image recording medium. The pre-exposure light source includes a plurality of EL lamps, which are arranged linearly in the Z direction. The readout light source and the pre-exposure light source both emit light in the X direction, and are integrally formed in rows. The focusing optical system is fixed to the readout light source and the pre-exposure light sources by a mounting member. A planar light source and scanning portions for each light source, which had been conventionally necessary, are obviated.
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