| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an image reading device capable of improving reading image quality in the composition where a contact image sensor (CIS) reads a surface of an original under conveyance. <P>SOLUTION: When the tip part of an original D guided by a conveyance guide 55 passes through a detection position X2 of a distance measuring sensor 51, the distance measuring sensor 51 detects a distance H to the original D to obtain a height Hα from a dustproof glass 50b of a CIS 50 for the original D based on the distance of the detected distance H. If the obtained Hα is not within an allowed tolerance range of the focal position in the CIS 50, the conveyance course of the original D is displaced by moving the conveyance guide 55 in the direction shown by an arrow B so that the obtained Hα can be within the allowed tolerance range. <P>COPYRIGHT: (C)2012,JPO&INPIT |
