Epson TM-L90 Technical Reference - Page 161

TM-L90/TM-L90 Peeler Model Technical Reference Guide Transparency rate of die-cut label paper If transparency (without black marks) label is used, use a label that meets the following requirements so that the printer can recognize the label position: (label + backing paper): transparency 18% or less (backing paper): transparency 47% or more Note: ❏ Transparency rates are measured by the Macbeth TD-904 (with a filter for infrared) photometer. The transparency rates are calculated as follows: Use Density = Log10 (Amount of irradiation / Amount of transparency) Then, Transparency rate (%) = (Amount of transparency / Amount of irradiation)100 ❏ If the transparency rates are out of the specified range (label + backing paper: 18% or less, backing paper: 47% or more), the printer detects a layout error. However, paper identified with a layout error may be used when the detection hole is prepared as follows. The position to detect the label may be shifted by approximately 0.5 mm {0.02"}. 1.75  0.5 6  0.5 Corner R0.5 or less 8.0  0.1 Corner R2 or less 0.5  0.3 (4) 5.0  0.5 0.5  0.3 Detection hole Face (printed side) [Units: mm] Appendix 161