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[A]
This model uses two magnetic clutches [A] to drive the scanners.
The first scanner [B], which consists of the exposure lamp [C] and the first
mirror, is connected to the scanner drive wire by the wire clamp [D]. The
second scanner [E], which consists of the second and third mirrors, is con-
nected to the scanner drive wire 'by a movable pulley (the second scanner
pulley [F]).
Throughout the scanning operation, the forward clutch drives the first scan-
ner at the same speed as the peripheral velocity of the drum (96 mm/s).
The second scanner pulley moves the second scanner at half the velocity of
the first scanner. This maintains the focal distance between the original and
the lens during scanning.
The wire clamp also works as the actuator of the home position sensor.
Return timing is controlled by the CPU.
1 Nov. '87
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