FENIX IMVICO
TK23 OPERATION MANUAL
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3.6- OPTICAL MARK
The TK23 printer has the capability of using the No-Paper mechanism sensor as an
optical mark sensor to work with paper, which is pre-printed with an optical mark. To
make use of this feature, the optical mark sensor must be enabled via hardware (See
point
3.4.2- PROGRAMMING MODE
).
The optical mark must be placed in the back of the paper, and in its right side as seen in
Fig. 3.11.- Optical mark characteristics
.
The optical mark must satisfy the dimensions shown in
Fig. 3.11.- Optical mark
characteristics
.
The optical mark is detected at the position, which the top edge of the optical mark
comes into approximately 2mm from the middle of the optical mark sensor. After
detecting the optical mark, it is not detected for approximately 2cm.
The reflecting rate of the optical mark must be 10% or less, and the reflecting rate of the
white must be 75% or more. The reflecting rate means the value, which is measured
with Macbeth density meter (PCMII) D filter.
By factory default setting, the cutting position is corrected 25mm forward and the
printing position is corrected 12,5mm backward:
with this adjustments paper begins
exactly at the position of the paper optical mark (where the optical mark sensor makes
the detection). If you are using partial cut (see page 49), correction backward are not
recommended.
The print starting position and the cutting position can be changed with the
GS ( F
command (See point
4- CONTROL COMMANDS
)
Fig. 3.11-
Optical mark characteristics.
Paper feed
direction
Print starting position (PP)
Cutting position (CP)
Center position of
the Optical Mark
Sensor
Approx. 2mm
25 m
m
1
0
mm
8mm
or more
12mm
or more
A
pprox
. 2cm
Optical Mark in back
side of paper
