Poor Barcode Printing |
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Broken Bars - Bars are broken by vertical white streaks. This defect might be introduced by low ink in printer, or dirt on scanner glass. |
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Low Ink - Bars are speckled with white spaces and streaks. This defect is typically introduced by low ink in printer. |
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White Noise - White noise covers bars all over the code. A result of low ink in the printer combined with scanning threshold (brightness) being set too high. |
Distortions and Damages |
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Crooked - Bars are distorted and warped, probably as a result of a misfeed. |
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Smudged - Portion of barcode is covered by a smudge. This is and similar defects are results of document mishandling, accidental spills, etc. |
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White Blobs - White drops cover parts of the barcode. The effect is similar to smudges, but results from white smudging material, such as white out or hole punch spots. |
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Partially Covered - A chunk of the barcode is obscured by another item. Similar defects are observed when the scanner feeder grabs portions of a second document, while the first document is still on the scanner bed, or if the document is fed diagonally across the scanner bed, leaving portions of the document and the barcodes outside the scan. |
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Stick On - Portion of barcode covered by stick-on label. Stick-on label is popular tool for document marking and Barcode stick-on labels are widely used for document identification and indexing. |
Poor Barcode Scanning |
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Damaged - The code image is unevenly scanned. It could have been printed this way or the scanner lit the image too brightly causing glare or uneven lighting |
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Too Dark - The bars are merged and the spaces are eliminated. This kind of distortion results from setting the scanning threshold (brightness) too low. |
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Too Light - The bars are broken because the scanning threshold (brightness) is set too high. |
