GeBE-TESTBENCH Linerless
GPT-4673
5.3.2 PRINT QUALITY
The print quality depends primarily on the sensitivity of the
base thermal paper and also on the amount of silicone
applied.
The higher the amount of silicone applied, the more
printing energy is needed to achieve a certain intensity
(blackening). In addition, the printed image is becoming
increasingly blurred. At low application rates of about 0.6
g/m
2
, the standard printing energy of parameter 18.6: = 25
is sufficient to produce a good print image. With a
standard application rate of 0.8–1.0 g/m
2
, a good
blackening is achieved at 18.6: = 28.
Ultimately, the print quality and print intensity of the same
base paper could be used to deduce the amount of silicone
applied.
The test uses a standard retail ticket. This ticket contains
critical elements which also allows the conclusions on the
print quality (see 1.-4.).
1. A horizontal 1 dot line:
The GeBE Testbench Linerless uses a two-stage history
control with 50% more energy for the first "cold" line, which
should be clearly printed.
2. An EAN13 barcode:
An important quality criterion is the module of the
barcode. So the ratio of the widths of dark and light
stripes. If the printing energy is too high or the printout is
blurred, legibility will be reduced.
3. A horizontal 2 dot line:
The GeBE Testbench uses a two-stage history control with
50% more energy for the first "cold" line.
25% for the next line.
Both lines should be roughly the same black. In the worst
case, the first line is barely visible.
4. A thin text:
Here, the resulting dissolution of the paper becomes
visible with silicone. A good paper hardly produces any
imperfections.
The picture shows three printouts of a good paper with approx. 0.7–0.8 g/m
2
silicone coating with adjusted density:
parameter 18,6: = 25, 28 and 30
25
28
30
GeBE Elektronik und
phone
+49.89.894141-0
GeBE-document-no. GPT-4673-LL-Testbench-C32-E-SMAN-V1.0-0973
Feinwerktechnik GmbH
fax
+49.89.894141-33
date September 4, 2019
Beethovenstraße 15
page 17 | 34
82110 Germering
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Germany
Internet
www.gebe.net
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