The problem of barcode labels; second, the problem of barcode scanner; third, the problem of barcode recognition and matching. Let's analyze the reasons why these three problems may cause the barcode to be unrecognizable.

First, the problem of barcode labels

1. The quality of the barcode is abnormal:

1) The barcode is deformed. The barcode is a relatively precise symbol. System, various code systems have corresponding ratios. If the barcode is randomly deformed during the barcode production process, the barcode will not be recognized, especially when using Coreldraw and other drawing software to produce barcodes.

2) Vertical breakage of the barcode bar generally occurs when using a barcode printer to print barcode labels. The main reasons are broken needles in the print head and wrinkled ribbons.

3) The width of the barcode blank area is not enough. The left and right blank edges of the barcode must be at least 10 times the width of the narrow strip.

4) There is a problem with the color matching of barcode bars and spaces. The difference in barcode reading depends on the color of the bar. Colors with high reflectivity will be recognized as spaces, and colors with low reflectivity will be recognized as bars. ,