Abstract: A dust-proof mechanism for optical reflection module of an image scanner is disclosed. The dust-proof plate is disposed at an open area of the optical reflection module. Each lateral end of the dust-proof plate is disposed with a shaft rod pivotally fitted in a shaft hole formed on a lateral inner wall of the optical reflection module. The direction of the dust-proof plate is parallel to the direction of the reflection mirror of the optical reflection module. When the scanner performs the scanning operation, the dust-proof plate is positioned at an opened position. When the scanner does not perform the scanning operation, the dust-proof plate shields the open area of the optical reflection module so as to isolate suspending dust from passing through the open area of the optical reflection module and attaching to the mirror surface of the reflection mirror.

Abstract: A scanning device for a color optical reader suitable for high speed single-pass scanning and size reduction, comprising a color charge-coupled-device (CCD) to sense and output red, green and blue signals; a driving circuitry to control the magnitude of the output image signals from the CCD; a color separation circuitry to select the desired color signal; a color pixel arrangement circuitry to convert the color data from a line sequence to a pixel sequence and a positioning mechanism to drive the CCD sensor to a predetermined position.The present invention can improve the effectiveness of single-pass scanning and output color signals while reducing the cost of the entire system.