Optical unit
The optical unit consists of the optical unit chassis, the scanning lamp, the CCD driver PCB, and the
Figure 25. Optical unit block diagram
The scanner controller board illuminates the flatbed lamp after receiving the scan command from the copy processor board. As the document is exposed to the illumination of the scanning lamp, the reflected light from the glass is sent by way of three scanning mirrors and a lens to the CCD driver PCB for image processing. When the scanning process is complete, the optical unit returns to the home position.
Figure 26. | Scanning process |
5 Theory of operation 65 |