Toshiba e-STUDIO163 Service Manual page 90

- RGB light guiding tube
A light from the LED array mounted on the CIS unit (CIS) goes through the original glass and
lights the original. Then, the reflected light from the original is scanned by the CCD. By adjusting
each amount of R, B and YG-LED light with reference to the amount of G-LED light, it is possible
to attain a light color which has nearly the same color effect as that of the YG xenon light for the
light sensitivity of the CCD.
This LED array produces the output power of 0.125W X 3.
- Gradient index lens (Rod-lens array)
This is a lens of which the index of refraction within it is varied.
This lens enables us to produce a unified image without combining mirrors or lenses.
3) Scan motor (M1)
This is a two-phase stepping motor which drives the CIS unit (CIS). The rotation of the motor is
transmitted to the CIS unit through the timing belt to move the unit in the secondary scanning direc-
tion.
4) CIS home position sensor (S1)
This sensor detects if the CIS unit is at its home position.
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SCANNER
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