Paper Empty Detection - Muratec MFX-2500 Field Engineering Manual

Paper Feed Unit

6.4.1.6.6 Paper Empty Detection

• When the cassette runs out of paper, the actuator for the Paper Empty Sensor drops into the cutout in
the Paper Lifting Plate. This unblocks the sensor and the machine detects that the cassette has run out
of paper.
• When a paper-empty condition is detected, the blinking LED lights up steadily.
• As noted earlier, the Paper Lifting Plate is raised at all times by the tension of the Paper Lifting Springs.
This causes the actuator for the Paper Empty Sensor to tend to be caught by the paper stack when the
cassette is slid out of the machine. To prevent this, the actuator is slightly tilted. This, however, presents
another problem of a smaller operating stroke of the actuator, which in turn increases the possibility of
the actuator activating the sensor by the flexing of a sheet of paper as it is taken up and fed in. To
prevent this false detection of a paper-empty condition, the paper empty detection is enabled only when
the Paper Take-Up Roll is in the retracted position.
Paper empty sensor S4
6-15
Actuator
Options