Ricoh Beluga-C1, Тренировка

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Beluga-C1/C1.5 Training
201
Slide 201
Roll End Detection
ROLL END DETECTION
Roll end sensors (circled in red)
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These are reflective photosensors.
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The paper rolls for this machine have a black core.
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So, when paper runs out, light is not reflected from the core back to the
photosensors.
Paper end sensors (circled in blue)
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Normally, there is always paper at these sensors, unless the roll runs out.
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These sensors detect the trailing edge of the paper at the end of the roll.
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These sensors are backups for the roll end sensors.
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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.
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Rolls with taped or glued trailing edges
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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.