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AApp.13 App.12
TM-T81
Specification
(STANDARD)
APPENDIX H: NOTES ON PRINTING 2-DIMENSIONAL CODE The TM-T81 supports 2-dimensional code printing.
Be sure to follow the notes below when printing 2-dimensional codes.
• When printing PDF417 (2-dimensional code), it is recommended to set the height of one module
of the symbol to three to fiv e times the width of one module, also making sure that the total
height is almost 5 mm {0.20"} or m ore.
• The recognition rate of the 2-dim ensional code may be affected by such items as dif ferent widths
of the modules, print density, env ironmental temperature, type of the therm al paper, and
characteristics of the reader. Therefore, the user should check the recognition rate in adv ance
so that the limitations of the reader can be considered.
Take a consideration as described below to determine whether the ability of the reader (scanner) can
be satisfied when the print result on the receipt, such as bar code, 2-dimensional code, or characters.
1) Print density
The print density may vary depending on t he type of roll paper or the environm ental conditions.
2) Slant of the print result
The print result may be slant slightly as shown in Figure I-1. The slant angle of the print r esult is
within ±1.6° and i t varies while printing or each receipt i ssue.
Figure I-1 Slant of the Print
NOTE: In case that the paper other than the paper described in Secti on 1.5 Paper Specification is
used or when the paper is used out of the range in Section 1.12 Envi ronmental conditions,
the print density or the slant of print r esult may become widen.