User manual

B.1 TICKET ALIGNMENT
B.1.1 Ticket alignment
Paper with an alignment notch can be used in order to handle tickets with pre-printed fi elds and a fi xed
length.
To guarantee the alignment it is necessary that the “Notch Alignment” parameter is enabled from the key
setup (see setting confi guration parameters), that the alignment sensor is calibrated and that the parameters
are set.The calibration of the sensor occurs automatically within the printer setup.
B.1.2 Enabling, calibrating and setting of parameters
The printer manages tickets with notch; place the notch on the heat sensitive side or on the non-heat sensi-
tive side of the ticket (see par. 1.5 Paper Specifi cations).
To guarantee a correct alignment it is necessary that the “Notch Position” parameter is setted with the right
value because the printer must know which sensor utilize from notch searching.
All printer sensors are refl ection sensors: this kind of sensor emits a band of light and detects the quantity of
light refl ected to it.
The presence of the notch is therefore detected by the amount of light that returns to the sensor, taking into
account that the light is refl ected by the white paper and absorbed by the black mark.
However is possible to use transparence sensors, using the sensor’s transmitter with the receiver of the op-
posite: during this operating condition a beam of light is emitted by a sensor and the quantity of light which
reaches the opposite receiver is detected, therefore for this reason the sensor less mobile be moved around
to the left so that it is perfectly aligned with the upper.
The presence of the notch so is detected evaluating the amount of light that arrives to the opposite sensor,
considering that the paper doesn’t allow the beam of light to reach the receiver, whereas a gap (like label
with gap ) or hole, lets the light to reach the receiver.
“Notch Position”
parameter
Using mode Notch position on
ticket
Notes
Disabled N.A. N.A. Alignment disabled
Down mobile REFLECTION Lateral non-thermal side Using notch printed on ticket to align
Up side REFLECTION Lateral thermal side Using notch printed on ticket to align
Tr. side TRANSPARENCE Lateral Using ticket with gap or label with gap
Calibration of the sensor occurs automatically and consists in adjusting the quantity of light emitted to adapt
it to the degree of whiteness of the paper used.
To start self-calibration, the “Notch Position ” parameter will be setted in a different value by “Disabled” value
from the printer setup (see setting confi guration parameters).
The printer will perform some paper FEEDS, at the end of which it will print the calibraration result and the
value of the PWM duty-cycle of the alignment sensor driver so that it can be perform an optimal notch detec-
tion, for example:
Autosetting Notch : OK
PWM Duty Cycle : 85.3%
When use the trasparence sensor the value of the “PWM Duty Cycle”
is managed with a fi xed value
The “Autosetting Notch” parameter indicates the operating condition of the self-calibration process; OK will
appear if it has been successful, but if it has failed the words NOT OK will appear.
APPENDIX B - ALIGNMENT MANAGEMENT
User Manual KPM150 B-1