7.Detailed Descriptions
225
By-pass Tray
The by-pass paper sensor detects when paper is placed on the tray.
Driving power for the by-pass feed roller is provided from the main motor, via the paper feed clutch and
the by-pass feed clutch. The feed process begins when the by-pass feed solenoid releases a latch on
the by-pass feed clutch, enabling the by-pass feed roller to turn. At this time, two cams on the by-pass
feed roller shaft lift the by-pass tray, pushing the paper up against the by-pass feed roller.
The by-pass paper feed roller stops after each rotation due to the on/off movement of the solenoid
(when off, spring pressure pulls the latch back down so that it catches on a cog).
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