eXtendo®
Thermal Printer Family
Part No. D-684-124
Mod. No. 4 270919 HW1
page 29 of 33
The center position
1-2
for X-56 and
3-8
for X-80 can be employed for a through-beam sensor. See
also section
3.6.1 Paper Entrance / Black Mark Sensor.
Default BM sensor locations:
X-56
BM sensor 6 (bottom side)
X-80
BM sensor 10
(bottom side)
Please note that sensor locations other than the default location are intended for OEM applications.
In order to avoid accidental interpretation of preprinted information as the black mark, it’s
necessary to keep the area 5 mm to the left and right of the BM edges for the entire length of the
printout free of all printing except Pantone Safety Colors with a print contrast (PCS) value of under
15%, as measured by MacBeth RD924. The BM itself must have a print contrast over 80%, per
DIN 66223, measured with MacBeth PCM2, Filter B. This applied to the side of the printout where
the BM is located, regardless of whether it is the thermal-coated side or not. The blue area in Fig. 13
shows this zone for the default sensor position 6 of the X-56.
