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November 2003 © TOSHIBA TEC 6 - 3 e-STUDIO3511/4511 SCANNER
6
(3) Carriage-2
Carriage-2 mainly consists of the mirror-2, mirror-3, etc. and directs the reflected light from the mirror-
1 through the mirrors-2 and -3 to the lens.
This carriage is driven by the same scan motor as that for the carriage-1 at half the scanning speed
of the carriage-1 (The scanning distance is also half that of the carriage-1).
Fig. 6-203
(4) Lens unit
The light reflected from the mirror-3 is led to the CCD placed at the focal point of the lens which is
fixed in a position.
(5) CCD driving PC board
Processes such as signal amplification, signal integration and A/D conversion are applied on the
electrical signal which was converted by CCD.
Fig. 6-204
(6) Automatic original detection sensor
The size of an original placed on the glass is instantly detected using the automatic original detection
sensors (APS sensor) fixed on the base frame without moving the carriage-1.
Lens unit
CCD driving PC board
Mirror-2
Mirror-3