Barcode scanners can be divided into the following situations:
First, the primary analysis of the bar code printed bar code quality can reach the grade, although you do not probably buy a professional bar code detector to stop detection, the general user can use the naked eye to identify the quality of bar code printing, household names, bar code is from black and white According to the scale of the response, you can check whether the printed black bar is clear. If there are some white spots under the black bar, you can judge that the bar code quality is not very good, but the performance of the scanner is still able to Read out, if it is a black bar, explain that the bar code has been completely helpless, it is proposed to detect the equipment that prints the bar code.
Second: Review whether the printed barcode can be complete, and whether the printed barcode can exceed the boundaries of the label. According to the bar code scanner scanning, the bar code must be complete from left to right. Each black bar and white bar has its meaning. If the bar code is not complete, even the high-end scanner can't scan.
3. Review the code of the printed bar code, which is an example of bar code. The common code system on the market is code128, code39, code93, EAN-13, etc. If the code system you print is not in this scale, you must open it. The scanning efficiency of the remaining code of the barcode scanner. Special explanation: Many customers will use CODE93 code to print, some scanners do not open CODE93, so it must be set.
Four: Review whether the barcode scanner can be prepared. The method is very simple: we have some barcodes on the goods around the week, if the bottles, books, food packaging, these barcodes are printed, the quality is very good, if the barcode scanner can not scan these barcodes, explain the barcode scanner There is something wrong with it.
V: It is very strict to review the content printed by the barcode. Because of the limitation of the barcode label width, some barcode contents are too long, and the scale reduction capability must be completely printed. The barcode scanner is divided into general scanner and high-precision barcode scanning. gun. If the scanner is not high-precision, it will not be able to scan the bar code with a high density display. This is the result of the unmatched print content of the selected scanner and barcode. The method of detecting marriage and unmarried is very simple, and can first print a barcode label with a short data content to stop the test.
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