Avery Dennison 9400 Series Programmer Manual - Manual (Page 98)

The table below shows the characters per inch for Code 128.
The table shows the values for numeric data, and for
alphanumeric data at each of the three densities available on
the printer. The characters per inch for your bar code will be
somewhere between these two values, depending on the
mixture of numeric and alphabetic characters. For a precise
calculation of the width of your bar code, refer to the
specification for the Code 128 bar code.
NOTE: Bar codes printed in parallel mode (top of the bar
code toward top of tag) on the 9465 only have the
characters per inch shown in the following table.
Density Numeric
Data Alpha-
numeric data
1 23.92 11.96
2 15.95 7.97
3 11.96 5.98
Density Numeric
Data Alpha-
numeric data
1 17.48 8.74
2 11.66 5.83
3 8.74 4.37
9400 Series Programmer’s Manual
B-4