User guide

Bar Code Printing on the LA600 MultiPrinter
20.7 Characteristics of the Supported Bar Code Styles
Figure 20–8 Example: MSI mod 10/10 Characters for ‘‘987654’’
Original number 9 8 7 6 5 4
New number formed from odd position digits 8 6 4
Multiply by 2 (x2) 1728
Sum of digits 1 + 7 + 2 + 8 = 18
Sum of previous summation and unused
digits from the original number 18 + 9 + 7 + 5 = 39
Modulo 10 39 Modulo 10 = 3 remainder 9
Check character 10 - 9 = 1
Final number 9 8 7 6 5 4 1
• Pitch is fixed to 21.18 bars per inch. The bar width is nominal 0.021 inch,
and the space is nominal 0.0255 inch.
20.7.11 UPC A
In bar code style UPC A, bar code symbols are structured as follows:
• First digit is the code for this bar code style.
• Next five digits form the vendor number.
• Second set of five digits is, typically, the product number.
• Final digit is the check digit, which must be calculated by the application.
For a sample calculation, see Figure 20–9.
Of the symbol’s twelve digits, six stand to the left of the Center code in odd
parity and six to the right in even parity. Digits in the second through the
eleventh position are printed on an HRC line.
The bar code symbol is ignored if more or fewer characters than 12 are used
or if any are illegal. In publishing applications, however, two or five digits
may be added. In these applications, when the data is equal to 14 or 17 digits,
the additional digits are encoded automatically and are not considered in the
calculations for the check digit. UPC A bar code symbols are printed in three
sizes, each of which requires a different minimum quiet zone, as shown in the
table below. While the symbol height is thus variable, it should be about the
same as the symbol length.
Bar Code Printing on the LA600 MultiPrinter 20–27