HP LineJet Printers - QMS Code V Technical Reference Manual, 171251-001PX

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Chapter 3 Bar Codes
Data Field
The bar code symbol uses a series of varying width bars and spaces to
represent a limited character set (numbers 0-9 and Special Characters Start,
Center, and Stop). The bars and spaces vary in width from 1 through 4
modules. Each character consists of 2 bars and two spaces that total 7
modules. The symbol coding of the left data field is different from the right
data field to permit read direction sensing.
Readable Data
The human readable data field provides a readable interpretation of the bar
code data. Readable data is printed below the horizontal bar code symbol and
to the left of a vertical bar code symbol.
Check Digit
The modulo-10 check digit is automatically calculated and inserted in the bar
code symbol. The check digit provides the means to verify accurate scanning.
The number system character is included in the check digit algorithm.
Standard EAN 13 Command Format
Refer to page 135 for the IBARC, command format and definitions.
Default Ratio: (cc)
dir p type data (cc)G
Variable Ratio: (cc)
dir p [9] [:] type [ ratio ] data (cc)G
(cc) Represents the Special Function Control Code
(SFCC). Enter the specific SFCC for your Code V
configuration.
dir Represents the direction of the bar code. Enter B
for horizontal or C for vertical bar codes.
p Prints the optional readable data field. The
readable data field is printed below a horizontal bar
code or on the left-hand side of a vertical bar code.
Replace
p in the bar code command with one of the
codes listed in Table 28 to print the readable data
field in the corresponding font with the specified
guard band gap.
Table 28. Printable Data Field Fonts
Font Gap
p code
Standard 10 cpi 3 dots Y
OCR-A 3 dots O
OCR-A .1-inch S
OCR-B 3 dots B
OCR-B .1-inch T
None N