When the document reaches the scan line sensor,
the actuator blocks the light path through that sensor.
Then prefeed stops to prepare for scanning.
The XVIDEO output while the machine is scanning
the document is shown on the right. While scanning
the document, the LED array flashes every 10 ms.
As the trailing edge of the page leaves the scan line
sensor, the light path through that sensor becomes
unblocked again. However, if there are some pages
remaining in the feeder, the light path through the
document sensor remains blocked.
After the transmission has ended, or after the copy
has been printed, the LEDs for scanning the original
switch off. The scanner is back in standby mode.
D-2
