Specifications

2-13
2.3.2.4 Mirror Carriage A and Mirror Carriage B Moving Mechanism
<Mirror Carriage Ar>
•
During a scan, the Mirror Carriage A projects an even amount of light from the Exposure Lamp onto the
entire surface of the original. The light is reflected from the original to the Mirror A of the Mirror Carriage
A and then to the Mirror B and Mirror C of the Mirrors Carriage B.
•
The Mirror Carriage A is driven by the FBS Motor and front and rear Scanner Drive belts.
•
Scanner speed is determined by the set zoom ratio in reference to the full size mode.
•
The Mirror Carriage A is at home position when Scanner Home Position Sensor is blocked. This position
serves as the reference for the scan motion.
•
The A4 sensor and B4 sensor restricts the movement of the Mirror carriage A according to the original
document size.
<Mirrors Carriage B>
•
The Mirror B and Mirror C are mounted to their holder at right angles to each other. They direct the light
reflected off the Mirror A through the lens to the CCD.
•
The Mirror Carriage B is also moved by the Scanner Drive belts and pulleys driven by the FBS Motor. It
travels at a speed half that of the Mirror Carriage A, thereby keeping constant the optical path length
between the Original Glass and lens.
Mirror carriage B
Mirror carriage A
Mirror carriage A End Position Sensor
Mirror carriage A Home Position Sensor
A4 Sensor
B4 Sensor