| 摘要 |
<p>A disk image acquiring device includes a guide for guiding a peripheral surface of a disk moving in a predetermined direction along a predetermined guide line, an imaging window defining an image-taking region on the one surface of the disk, a timing sensor to take images having a detection axis traversing a moving direction of the disk and outputting a timing signal as arrival of the disk at a predetermined position on the imaging window when the peripheral surface of the disk has been detected on the detection axis, and an imaging device which takes an image of the one surface of the disk via the imaging window based upon the timing signal, wherein a bisector of an angle between the guide line and the detection axis as viewed from a direction orthogonal to the imaging window is utilized as a base line, and the imaging window is extended along the base line.</p> |
