| 摘要 |
<p>An image reader comprises a housing (1), an input member (2) having an input face, a rotator (3) made of a transparent material, a light source (4), an optical detecting means (5) having a plurality of photoelectric transducers, and a signal processing means (8), wherein the input surface is irradiated with light from the light source, and a partial image, obtained from the light (13) reflected from the valley line of a finger (6) touching the input surface, and a gray pattern provided on the surface at one end of the rotator (3) rotating in contact with the finger are recognized continuously by the optical detecting means (5) and the entire image of a fingerprint is synthesized from the partial images by the signal processing means (8).</p> |
