Printronix l7032 Manual De Referencia
159
3
Bar Codes
Overview
A bar code is a graphic representation of alphanumeric characters. Bar codes
are produced by entering a bar code command to VGL in the Graphics mode
using an Extended Graphics command.
are produced by entering a bar code command to VGL in the Graphics mode
using an Extended Graphics command.
You can print the bar codes horizontally, vertically, with or without a human
readable data field, with default bar/space ratios, or with variable ratios. The
human readable data field may be printed using any of the Extended
Graphics command fonts available with the (cc)S or (cc)IFONT, commands.
readable data field, with default bar/space ratios, or with variable ratios. The
human readable data field may be printed using any of the Extended
Graphics command fonts available with the (cc)S or (cc)IFONT, commands.
Bar code symbols are configured in a series of varying width bars and spaces
representing a specific bar code character set. These characteristics are in
accordance with established industry-wide practices.
representing a specific bar code character set. These characteristics are in
accordance with established industry-wide practices.
Several integrity checks are performed against the bar code data, and error
messages are printed if any illegal data is discovered.
messages are printed if any illegal data is discovered.
Each type of bar code has a different set of characters that can be bar coded,
and VGL ensures that the data falls within the allowable set. Some bar codes
permit a variable number of data characters, while other bar codes require a
fixed number of data characters. VGL ensures that the data adheres to these
constraints.
and VGL ensures that the data falls within the allowable set. Some bar codes
permit a variable number of data characters, while other bar codes require a
fixed number of data characters. VGL ensures that the data adheres to these
constraints.
NOTE: Be sure you have set the proper printer mode as described in
Chapter 2.
The single most important consideration when printing a bar code is to ensure
the bar code will be scanned properly. Incorporating a bar code quality
procedure in the printing process is the best way to ensure that bar codes are
being printed correctly. A properly implemented validation procedure will
increase overall bar code quality, reduce waste from misprinted bar codes,
and Printronix achieve high first-time read rates, which is an increasingly
important factor in newer, more efficient systems where manually entered
data is not acceptable as a backup function. Validation also minimizes the
costs of returned products due to poor reading or unaccountable bar codes.
For more information on bar code validation, contact your Printronix
representative, or visit our web site at www.printronix.com.
the bar code will be scanned properly. Incorporating a bar code quality
procedure in the printing process is the best way to ensure that bar codes are
being printed correctly. A properly implemented validation procedure will
increase overall bar code quality, reduce waste from misprinted bar codes,
and Printronix achieve high first-time read rates, which is an increasingly
important factor in newer, more efficient systems where manually entered
data is not acceptable as a backup function. Validation also minimizes the
costs of returned products due to poor reading or unaccountable bar codes.
For more information on bar code validation, contact your Printronix
representative, or visit our web site at www.printronix.com.