13 factors affecting barcode scanners that do not recognize barcodes

Guide: Bar code is divided into six levels A, B, C, D, E, F, of which A grade is the highest quality, B is the second, F grade is the lowest, the general barcode gun is more difficult to read.

There are 13 main reasons why barcode scanners cannot read barcodes:

1. The barcode information density is too high, and the resolution of the printer is low, resulting in unclear barcodes printed.

2. The quality of the ribbon is not good, which causes the printed barcode to be blurred and easy to erase, resulting in incomplete barcode information and impossible scanning.

3. The surface of the barcode is covered with transparent material, and the degree of reflection is too high. Although the eye can see the barcode, the barcode scanner/barcode scanner has strict reading conditions and cannot be read.

4. The bar code code system printed is unreasonable.

5. Barcode scanner/barcode scanner hardware failure.

6, did not open the function of reading this bar code.

7. Direct sunlight, the photosensitive device enters the saturation zone.

8. The scanning head of the scanner is of poor quality, which makes it impossible to read the barcode.

9. The scanning angle is not well mastered, and the vertical scanning is wrong. (Because the bar code surface will reflect light, the reflected light will illuminate the mirror inside the scanner window, which will interfere with the normal decoding of the scanner. The correct scanning angle should also be that the scanner should be tilted at an angle of 30 degrees with the bar code.)

10. The scanner does not support the scanned barcode type. For example, many barcodes only support reading one-dimensional barcodes, and do not support reading two-dimensional barcodes.

11. The scan cable of the scanner is not properly driven. You can unplug the scanner cable and plug it back into the computer's connector.

12, the way to make barcodes can not be scanned, such as printed barcode labels will also make scanning difficult to identify, generally choose a barcode printer will be better!

13. The scanning distance is too far or too close, beyond the readable range of the scanner (the reading range of the red scanner is about 2CM, and the scanning distance of the laser scanner should be between 6-25cm).