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9450 Programmer’s Manual
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C-4 TC9450PM Rev. C 8/11/98
Densities when Wide Dots are Zero
The following table lists the densities of the UPC, EAN, and Code 128 bar codes for each narrow
dot amount. In each case, the number of wide dots is always zero.
Narrow
Dots
UPC and
EAN
Ratio
A
Code 128
Alpha
B
(CPI
C
)
Code 128
Numeric
B
(CPI)
1
C
38% 18.5 36.9
2 76% 9.2 18.5
3 114% 6.2 12.3
4 151% 4.6 9.2
5 189% 3.7 7.4
6 227% 3.1 6.2
7 265% 2.6 5.3
8 303% 2.3 4.6
A
The UPC and EAN ratio is a percentage of the standard bar code size for the specified number
of narrow dots.
B
Alpha and Numeric specifications indicate the type of data, not a character set.
C
Characters per inch.
D
May require special supplies to scan correctly.