Scanning Section; Function - Toshiba e-STUDIO520 Service Manual

6.

SCANNING SECTION

6.1

Function

In the scanning section of this equipment, the surface of an original is irradiated with a direct light and
the reflected light is led through mirrors and lens to the CCD where the optical-to-electrical conversion
is performed, converting the optical image data into an electrical (analog) signal. This analog signal is
changed to a digital signal, which then performs various corrective processes necessary for image for-
mation. After that, an arithmetic operation is performed on the digital signal, which is then transmitted to
the data writing section.
Exposure lamp
Reflector
Carriage-2
March 2005 © TOSHIBA TEC
Carriage-1
Rail for carriage-1
Shading correction
plate
Lens
Rail for carriage-2
Fig.6-1
6 - 1
Drive pulley
Original glass
CCD board
SLG board
CCD sensor
e-STUDIO520/600/720/850 SCANNING SECTION
6