Roll End Detection - Ricoh Beluga-C1 Training

Slide 201

ROLL END DETECTION

Roll end sensors (circled in red)
These are reflective photosensors.
The paper rolls for this machine have a black core.
So, when paper runs out, light is not reflected from the core back to the
photosensors.
Paper end sensors (circled in blue)
Normally, there is always paper at these sensors, unless the roll runs out.
These sensors detect the trailing edge of the paper at the end of the roll.
These sensors are backups for the roll end sensors.
Some users may install paper rolls that do not have black cores. In this
case, the roll end sensors may not pick up the end of the roll.
Rolls with taped or glued trailing edges
The trailing edges of some roll paper are attached to the roll core with either
glue or tape. In this case:
When the roll reaches the end the paper will pull against the tape or
glued end of the paper and the roll rotation will stop.
The machine signals a paper jam. This indicates that the empty roll must
be replaced.
Roll End Detection
201
Beluga-C1/C1.5 Training