& Finishers
(B803/B805/
D373/D374/
D636/D637)
The front lower tray full sensor is mounted higher than the rear lower tray full sensor.
The lower tray is stationary. When it becomes full, the stapling and folding job stops until
booklets are removed from the tray.
If the lower tray is not installed (this is detected if the front and rear sensors remain OFF),
the machine will not operate in the booklet staple and fold mode. When booklet mode is
selected, the tray full message appears on the operation panel.
The combinations of the two actuators and two sensors as the actuator arm rises determines the
number of booklets that the lower tray can hold before the job stops.
The tray full detection depends on the size of the paper and the number of sheets in one stapled
and folded booklet.
In the table below, the conditions ( Ready Full 1, Full 2 Full 3: See the illustration on the
previous page) refer to the states of the sensors described on the previous page.
Condition Front Sensor Rear Sensor
Ready ON OFF
Full 1 ON ON
Full 2 OFF ON
Full 3 (or lower tray not installed) OFF OFF
In the tables below:
"Sht" denotes "sheets in a stack".
"Cnt" denotes "Count" (see below for an explanation).
After a booklet is feed out, the fold roller motor stops the exit roller. The machine then monitors the
tray full sensors every 100 ms. The machine checks for a certain condition, based on the size of
the paper and the number of sheets in the booklet.
An example is shown below. Tell the operators that the number of sheets that the lower tray can
hold will vary greatly.
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