A barcode label is a sticker commonly attached to a product. Its format or length is based on the specific product code, which means each product may have a different barcode label.
Barcode labels are available in several types, each with different material characteristics:
Thermal – Typically used for direct thermal printing, suitable for short-term use.
Semicoat – Coated paper with a smooth surface, ideal for general-purpose labeling.
Yupo – A synthetic, waterproof, and tear-resistant material, suitable for more durable labeling needs.
Silvermate – A metallic-looking label, often used for industrial or asset labeling due to its durability.
In most retail stores, thermal and semicoat barcode labels are commonly used because they are more affordable and practical for day-to-day operations.
While applying barcode labels is generally straightforward, there are certain conditions that can cause barcode labels to become unreadable or fail to scan properly. These issues can stem from the label quality, printing method, or even the scanner itself.
I. Product Code or SKU is too Long
A product code or SKU that is too long can make the barcode difficult—or even impossible—to scan. The longer the product code, the more stretched and dense the barcode becomes, causing the lines to blend together. This can prevent the scanner from accurately reading the barcode, resulting in failed scans at the point of sale.
To ensure barcode readability, it’s recommended to keep product codes or SKUs short and concise—ideally no more than 8 characters. This helps generate clear, scannable barcode labels that can be read quickly and accurately by the scanner.
II. Barcode Scan Is Not at the Optimal Distance or Angle
The distance and angle at which a barcode is scanned greatly affect the scanner's ability to read it accurately. Scanning from too far, too close, or at an incorrect angle may result in failed scans.
Distance
When scanning a barcode, if the distance between the scanner and the barcode label is too far, the scanner may fail to detect and read the barcode correctly. The ideal scanning distance also depends on the size of the barcode.
If the barcode is small, the scanner needs to be held closer to the label. On the other hand, if the barcode is large, the scanner should be positioned farther away to capture the entire barcode area properly. Adjusting the scanning distance based on the barcode size is essential for accurate and successful scans.
Angle
The angle at which a barcode is scanned also plays a key role in the success of the scan. For best results, try scanning the barcode in a well-lit area so the scanner can detect the label clearly.
However, make sure the lighting does not cause glare or reflection on the barcode label, as this can interfere with the scanner's ability to read it. Proper lighting and the right scanning angle will help ensure a smooth and accurate barcode reading process.
III. Dirty Printers or Damaged Barcodes
To maximize the effectiveness of barcode labels, it is recommended to regularly clean the printer used for printing barcodes. A dirty printer can result in poor-quality prints, causing the barcode to become damaged and unreadable.
One common issue caused by a dirty printer is the appearance of white lines across the barcode during printing. These missing lines can prevent the scanner from accurately reading the barcode, leading to failed scans. Keeping the printer clean helps ensure that the barcode is printed clearly and can be scanned without any issues.
Related Articles:
To install a Zebra barcode printer, you can check this article How to Install Print Barcode Zebra GT820 (GT800 EPL)
If you want to print a product barcode, you can check this article Print Product Barcode
If you want to print barcodes using a Deskjet printer, maybe you can check the steps in this article Printing Barcode Using Deskjet Printer
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