Barcode scanner read according to

Barcode scanners are very convenient and fast in the use of major supermarkets. The bar code provides an executable method for product type analysis and classification, allowing users to enjoy high-tech equipment in their daily work.

So how long has it been, when the bar code scanner fails, does the warehouse storage get worse? How do the merchants use solve the problem that the device cannot scan? Let's take a look at it first.

1. The bar code does not conform to the specification, such as the lack of a necessary blank area, the contrast of the bar and the space is too low, and the width and width of the bar and the space are not suitable.

2. The bar code scanner should be placed away from direct sunlight to allow the photosensitive device to enter the saturation zone.

3. Check if a hardware failure has occurred.

4. The scanning angle is not well mastered, and the vertical scanning is wrong. Because the surface of the bar code will be reflected, the reflected light will illuminate the mirror inside the window of the scanner, 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 to the bar code.

The quality of the scanning head of the barcode scanner is too bad, which makes it impossible to read the barcode. Of course, we also know that the barcode is divided into five grades A, B, C, D, E, and F, of which the A grade is the highest quality, B Secondly, the F level is the lowest, and the lower the bar code is more likely to cause reading difficulties.

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