POSIFLEX Business Machines PP7700 Series - Manual (Page 24)

2 - 14
Slightly release the fixing screw to adjust the position of sensor
head. The acceptable paper roll bobbin outer diameter is between
18 and 22mm. This adjustment allows sensor activation on paper
roll overall diameter between 21 and 23.6 mm unless for too light
bobbins. Remember, for smaller roll diameter, the sensor head
should go higher.
2.
Paper Roll Placement
When the paper
roll to put (back) in is
already nearly used up,
the paper roll must be
placed in the way that
the paper roll touches
the sensor head from
the outer surface but never allow the sensor head to ride on the
bobbin body between the inner and outer diameter of the paper
roll bobbin nor to go into the inner diameter of the paper roll
bobbin. It is also noticed that some market available paper roll has
extremely light bobbin, easily causing the paper roll to go off
position when paper feeding with low remaining paper. In this
case, the paper near end sensor may function abnormally and it
would be a good solution to set in the setup window to have the
printer to send busy only when input buffer is full and not based
on every off line signal.
3. Spacer Plate
If the paper roll is of width less than the standard 80 / 58
mm, it may run away from the paper near end sensor during
application resulting in an error status. In this case, please stick
the spacer plate to the wall opposite to the paper near end sensor
in the paper roll compartment. Each spacer plate compensates 1
mm paper roll width shortage. There will be 1 spacer plate in the
Bobbin I.D.
Bobbin O.D.
Thermal
Paper
Surface