摘要 |
PROBLEM TO BE SOLVED: To provide an image reading device and image forming apparatus capable of determining that a signal output from a document reading means for reading a document is normal, regardless of the position of a cover means movably provided at a position to expose a document placing part and at a position to cover the document placing part. SOLUTION: The image reading device includes: an adjustment means for adjusting the magnitudes of signals output from a photoelectric transducer for photometry and a photoelectric transducer for adjustment in such a way that the magnitude of the signal output from the photoelectric transducer for adjustment becomes a predetermined magnitude; and a determination means for determining that a signal output from a document reading means is normal, regardless of the position of the cover means in the case where the magnitude of the signal output by the document reading means after the adjustment by the adjustment means is a predetermined magnitude. COPYRIGHT: (C)2010,JPO&INPIT |