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Appendix
Paper detection method
Sensor Label sensor (Transmissive photo interrupter)
Black mark sensor (Reflective photo interrupter)
Judging method The label sensor and black mark sensor detect the position of the paper.
When using die-cut label without black marks, the light transmission rates must be: 40 % or
higher for the backing paper, and 23 % or lower for the labels.
When using paper with black marks, the black mark reflectance rate must be 10 % or lower,
and the white reflectance rate is 70 % or higher.
When preprinting on the back of the continuous paper, do not preprint on the area where
preprinting is prohibited that is shown in the figure below to avoid affecting paper detection.
15 mm { }
13 mm { }
Paper feed
direction
Paper feed
direction
Area where preprinting
is prohibited
Back Front
Paper
0.59”
15 mm { }
0.59”
0.51”
13 mm { }
0.51”
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