| 摘要 |
In a image reading apparatus applicable to a facsimile machine, copying machine or the like which includes an original document transporting unit having therein an image reading point and a rigid base plate having thereon an optical element such as mirror or lens and a photoelectric conversion unit such as CCD to convert incident light information to an corresponding electrical signal, said transporting unit being supported to a rigid supporting member, said rigid plate being rotatably supported at its side end portion to an axis connected to said rigid supporting member, whereby a distance of an optical path from the reading point to the conversion unit is stably kept constant even though the housing of the apparatus is distorted.
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