Ricoh D182 Service Training page 81

Booklet Tray – Tray Full Sensors
Rear Tray Full
Sensor
Ready
 The sensors detect four conditions.
 Ready, Full 1, Full 2, Full 3
 The three 'Full' conditions are not 'half-full', 'almost full', and
'completely full'. The machine checks for one of these conditions to
detect that the tray is full. The condition that the machine checks
depends on the size of the paper and the number of sheets in one
stapled and folded booklet.
 If the tray is removed, the machine detects the Full 3 condition.
Slide 81
 The red sensors are 'ON'. The actuator is in the sensor.
 The three 'Full' conditions are not 'half-full', 'almost full', and 'completely full'. The
machine checks for one of these conditions to detect that the tray is full. The
condition that the machine checks depends on the size of the paper and the
number of sheets in one stapled and folded booklet.
 After a booklet is fed out, the machine checks every 100 ms. Then, if the
required 'full' condition is detected a set number of times (called "Cnt" in the
service manual), the tray is full.
 The only exception to this is Full 3. The machine must check this at all
times to make sure that the tray was not removed.
 There are some examples in the service manual.
 The two-sensor mechanism is designed to take account of the way that booklets
of various size and thickness settle on the output tray when the tray is getting
full. The 'Cnt' values are the results of evaluations by the machine's designers,
and they are the optimum values for the detection process in this model.
Front Tray Full
Sensor
Full 1
Full 2
81
Full 3
No tray
OR-C2 Training