Reflector - Toshiba 8070 Service Manual

7. SCANNER
7.1 Functions
During a scanning process, light is directed at the surface of the original document and then to the CCD
via mirrors and the CCD lens and a slit. The CCD unit in which optical image data are converted to
electrical signals accomplishes photovoltaic conversion. The resultant analog signals undergo A/D con-
version, which ultimately become digital signals. These signals undergo compensation processes in
order to produce the required image. Digital signals are then sent to the printer section of image process-
ing.
Exposure lamp CCD drive PC board
Original glass
Rail for CRG-2
Reflector CRG-1 Rail for CRG-1
Lens
Drive pulley CCD sensor
CRG-2
Scanner control PC board (SLG board)
Mar. 1999 © TOSHIBA TEC 7 - 1 6570/5570 SCANNER