Address specific issues of bar code generation and use

Quick guide:

                  If you're a supermarket label, choose.
                  EAN-13
                  。
                

                  If you're an internal warehousing management or logistics, choose.
                  Code 128
                  。
                

                  Select if you need a short string with letters.
                  Code 39
                  。
                

Why can't I scan my bar code?

This is the most common problem, usually caused by:

Contrast insufficient: The bar code must be sufficiently dark and the background sufficiently white. Avoids printing bar codes directly in dark or transparent background.
Quiet Zone is too narrow: Sufficient space must be left on both sides of the bar code, otherwise the scanner cannot locate the beginning and end of the bar code.
Print quality poor: If the printer's nozzle is blocked and the line breaks or the powder is uneven, the scanner will not be read correctly.
Scaled out: Over-compressed bar code width (especially when the bar width is 1 px) may lead to inadequate general scanning gun resolution.

2. What difference does Code 128 make to EN-13?

Code 128 It's a high-density, variable-long bar code that can encode all 128 ASCIIs character. It is flexible and widely applied to the internal management of the enterprise, the delivery of documents and asset tracking.

EAN-13 It is the international standard commodity barcode, which is used mainly for retail settlements. It must be 13. bits, and following specific coding rules (including prefixed country code, manufacturer code and verification slot). If you're going to sell the product in the store, you have to... GS1 applied for EAN code.

3. How can 100 per cent readability be guaranteed at the time of printing?

To ensure that the resulting bar code is scanned smoothly in all settings, the following best practices are recommended:

Using vector format: This tool supports the export of SVG formats. SVG is a vector map, which is the preferred type of professional printing, no matter how many times the zoom, it doesn't fall off.
Test printing: Before mass production, print one with a real printer and use a different cell phone, App Or a professional scanner to test.
Avoid reflection: If the bar code surface is plastic sealed or retroreflective, the scan light may be dispersed. It is recommended that you print on a dumb-ray paper.

4. Distinction between 1D barcode and 2D 2D code

1D barcode (1D Barcode) mainly stores an index value (e. g. ID), while 2D code (2D Code, e. g. QR) Code) can store more information, including web sites, text, business cards, etc. But in the traditional areas of retail and industrial automation, 1D Barcodes continue to dominate because of their speed of scanning and low hardware requirements.