Disposed Master Compression Mechanism - Riso RZ3xx Series Technical Manual

4. Disposed Master Compression Mechanism

1) Initializing movement
The initialization action of the master compression plate is made in two occasions.
(1) If the master compression plate HP sensor is found opened when the machine power is turned ON or
when the all-reset key is pressed, the master compression motor rotates in the return direction until the
light path of the master compression plate HP sensor becomes blocked. If the light path of the master
compression plate HP sensor is blocked from the start, the initializing operation of the master compression
plate is not performed.
(2) If the light path of the master compression plate HP sensor is opened at the start of the master compressing
operation, the master compression motor rotates in the return direction until the light path is blocked. If
the light path of the sensor is blocked from the start, the initializing operation of the master compression
plate is not performed.
2) Master compressing movement
With only a small amount of removed master in the master disposal box, the master compression plate
makes full compressing action. The plate stops at the maximum down position for 3 seconds and then
returns to the fully raised home position. The maximum down position is 130 pulse count by the FG sensor
(adjustable by test mode No.573). The FG sensor, located in between the series of gears between the
master compression motor and compression plate, starts counting the pulses when the compression plate
clears from the master compression plate HP sensor.
As the removed master in the master disposal box increases, the resistance to the compression plate increases,
causing the plate to slow down during the compression movement. The compression plate ends the
compressing action before it reaches the 130 pulse count position. If the time intervals between each pulse
exceeds 53 ms (adjustable by test mode No.575), the compression plate ends the compression action and
stops for 3 seconds. The plate then returns to the home position.
As the amount of the removed master increases, the resistance against the compression plate increases
during the compressing movement. If the time interval exceeds more than 53 ms (adjustable by test mode
No.575) between each FG count within the compression plate arrives at 106 pulse count from the home
position (adjustable by test mode No.576), the master disposal box is detected to be full. The LED lamp on
the operation panel lights to give the FULL message.
Maximum compressing position
RISO Inc. Technical Communications
Master compression plate
1008
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CHAPTER 10: MASTER REMOVAL SECTION
Master compression plate HP sensor
1007
Master disposal box FULL position
1009
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