Riso ComColor X1 series Technical Manual page 880

1-4. Stacker Tray elevation operation
The Stacker Tray moves up or down based on the height of the paper on the tray.
movement is driven by the Elevator Motor.
1-5. Sensors
To enable control of the Stacker Tray elevation operations, the following sensors detect the vertical position of the
Stacker Tray. < Refer to page No. 24-58 for the sketch on the location of the sensors.>
(1) Stack Height Sensors
When paper is discharged and stacked on the Stacker Tray during a print job, the Stacker Tray must elevate down
based on the amount of paper stacked on the tray.
For this purpose, a sensor detects the top surface of the paper stacked on the Stacker Tray.
This detection function is performed by one of the following two sensors:
• Stack Height Sensor 1
This sensor is used for normal operations.
• Stack Height Sensor 2
This sensor is used when the Stacker Flap (described on the previous page) is lowered.
(2) Tray Height Sensor Lower
The tray descends based on the amount of paper on the Stacker Tray during a print job. If discharged paper is
manually removed from the tray during a print job, the tray must be raised to adjust for the loss of height resulting
from removal of paper from the tray. The Tray Height Sensor Lower will detect the manual removal of paper from
the tray.
< The Elevator operation is activated based on the amount of paper in the tray.>
(1) At the start of a print job, the tray rises until the Stack Height Sensor light path is blocked, then descends until
the sensor detects light once again. (In other words, the sensor light path is not blocked during a print job.)
(2) If stacked paper blocks the Stack Height Sensor light path, the tray descends until the sensor detects light
once again (adjustment operation based on paper height).
(3) The light path of the Tray Height Sensor Lower is usually blocked, but manually removing stacked paper will
expose the sensor to light, prompting the operation described in (1).
(3) Stack Sensors
To detect the tray upper-limit/lower-limit positions and to restrict the amount of paper on the tray, the machine must
detect the position of the Stacker Tray itself. The position of the tray is detected by a combination of the following
four sensors:
• Mix Stack Sensor
• Half Stack Sensor
• Full Stack Sensor
• Lower Limit Stack Sensor
Mechanical upper limit.
Lower limit when different paper sizes are on
the Tray.
Lower limit when SEF papers are on the Tray.
Lower limit when LEF papers are on the Tray.
Mechanical lower limit.
Mix Stack Sensor
Half Stack Sensor
Upper Limit
Height Sens-or
Mix
Half
Full
Lower Limit
[ 24-65 ]
Multifunction Finisher II (option)
The Stacker Tray elevation
Full Stack Sensor
Lower Limit Stack Sensor
Normal movement range of the Tray.
Solid black indicates the sensor light
path status in blocked condition.
x1 Series ComColor (Revision 0.9)