Chapter 2 Bar Code Failures
The printer will stop, indicate an error, and overstrike as described above. Then it will skip a number of blank labels, depending on the setting for Skip Labels (see “Setting For Skip Labels” on page 51). It will then slew to the next top of a blank form and reprint the entire form that contained the bad bar code and any other forms that were perhaps interrupted by the error.
NOTE: Because of physical differences between the location of the print head and the scanning beam, it is likely that a second form will be started before the first form has finished being assessed. Therefore, the reprint operation will need to reprint more than just the form with the error.
If the printer has to reprint the same form five times in a row, the print job stops completely and behaves the same as in Stop mode.
Error Messages
The validator can detect a number of errors. When one of these errors occurs, the validator alerts the printer to perform the currently selected error action (see “Error Action” on page 62) and show the appropriate error message on the printer display. Validator error messages are explained in Table 4.
Table 4. Message List
Message | Explanation | Solution |
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Bar Code Improper | Data validation error: the bar | Fix the application so it |
Data Format | code is not properly encoded. | sends data in the correct |
| For example, a check sum is | bar code format. |
| incorrect, a required number |
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| of characters is not met, or |
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| the required terminator |
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| characters are not included. |
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| This problem is almost |
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| always caused by incorrect |
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| form or host application |
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| design. |
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