Paper Detection Method - Epson TM-C7500 series Technical Reference Manual

Paper detection method

Sensor
Judging method
 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.
Label sensor (Transmissive photo interrupter)
Black mark sensor (Reflective photo interrupter)
The label sensor and black mark sensor detect the position of the paper.
15 mm { }
0.59"
Paper feed
direction
Back
13 mm { 0.51" }
15 mm { }
0.59"
Paper feed
direction
Front
13 mm { 0.51" }
Paper
Area where preprinting
is prohibited
Appendix
187