Patent ID: 6137615
Filing Date: 2000-10-24
Classification: H04N

Abstract:
An optical scanner with adjustable resolution, comprising;a hollow casing having a scanning path located therein and a transparent document board on a top thereof for holding a scanning document;an optical path means movable reciprocally in the casing to perform scanning operation including a plurality of mirror sets and a charged couple device, the mirror set receiving document image and transmitting to the charged couple device;a driving means for moving the optical path means to perform scanning including a first friction wheel; anda movable motor having an output shaft and a second friction wheel mounted on the output shaft, the second friction wheel having a circumference making contact with a surface of the first friction wheel for moving the driving means to move the optical path means to perform scanning;wherein contact position of the first friction wheel against the second friction wheel is changeable by moving the motor such that the optical path means moving speed is also changeable for adjusting resolution of the scanner.