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APPENDIX
Refer to the industry standards reference material for the features and applica-
tions of each bar code symbology.
This section of this document covers the proper commands to select the bar code
symbology required.
(1) CODE 39
CODE 39 can represent numeric characters from 0 to 9 and alphabetical
characters A to Z. Width of each bar of bar code depends on the mode.
The number of dots for each element of the bar code in each mode is shown as
below. The number of dots depends on whether the print direction is horizontal
or vertical.
1) Length of each element in each mode
a) Horizontal printing
b) Vertical printing
In vertical printing, one dot is added to each white bar which is horizontally
printed. (This is because the width of black bars is made wider due to the
change of printing characteristics caused by heating of the printing head. As
a result, the number of dots for white bars and for black bars are different
even when white and black bars have the same narrow-element width.
Length of each element is as shown below.
Appendix 1 : How to set various bar codes
Mode 1Mode 2 Mode 3 Mode 4 Mode 5 Mode 6 Mode 7 Mode 8 Mode 9
2 dots 3 dots 4 dots 2 dots 3 dots 4 dots 2 dots 3 dots 4 dots
6 dots 9 dots 12 dots 5 dots 8 dots 10 dots 4 dots 6 dots 8 dots
1 : 3 1 : 3 1 : 3 1 : 2.5 1 : 2.7 1 : 2.5 1 : 2 1 : 2 1 : 2
2 dots 3 dots 4 dots 2 dots 3 dots 4 dots 2 dots 3 dots 4 dots
4 6 8 3.625 5.625 7.25 3.25 4.875 6.5
Item
Width of narrow
elements
Width of wide
elements
Ratio
Inter-character
space
Length of one
character (mm)
Mode 1Mode 2 Mode 3 Mode 4 Mode 5 Mode 6 Mode 7 Mode 8 Mode 9
4.625 6.625 8.625 4.25 6.25 7.875 3.875 5.5 7.125
Item
Length of one
character (mm)
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