| 摘要 |
PURPOSE:To make the pressing force of a pressing plate uniform, and to prevent an oblique travel in the feeding of an original by constituting a spindle and a hole which fit the center of rotation of the pressing plate so as to be the spindle and a long hole, only one of which fits it. CONSTITUTION:In a case that a distance (a) between the rotation center spindle 2a of a roller 2 and the rotation center spindle 9a of the pressing plate 7, and the distance (b) between the rotation center spindle 2b of the roller 2 and the rotation center spindle 9b of the pressing means 7 come different from each other, or in the case that the property of parallelism between the pressing plate 7 and its rotation center spindles 9a, 9b comes wrong, because the rotation center spindle 9a, supported by a frame 3, has a degree of freedom only in a direction, perpendicular to the plate 7 and parallel with the roller 2, against a rotation center spindle supporting hole 8l, the long hole 8l, in a fixed relation with the pressing plate 7, slides in the direction to release a stress for the rotation center spindle 9a. Accordingly, a distortion is not generated anywhere, and the pressing plate 7 contacts the whole width of the roller 2, and the pressing force of the pressing plate 7 against the roller 2 comes uniform.
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