T/STTX 2.3-2019 Barcode Printing Quality Assurance System Part 3: Barcode Design

Scope

Main Technical Content: 5. Design Requirements 5.1 Common Printing Substrates Common printing substrates include paper, self-adhesive labels, corrugated paper, plastic, and metal. Due to the high optical characteristics and dimensional accuracy requirements of barcode printing products, material selection and production should be strictly controlled. For example, when the substrate is paper or self-adhesive labels, materials such as coated paper, offset paper, and white paper can be used; when the substrate is plastic, materials like biaxially oriented polypropylene film can be selected; when the substrate is metal, materials like aluminum foil and tinplate can be used. Common corrugated paper packaging boxes are not recommended for printing retail unit product barcodes due to their poor surface flatness and inconsistent ink penetration, which can lead to significant printing errors. 5.2 Barcode Dimensions The dimensions of a barcode include: magnification factor, left and right side blank area width, and barcode symbol height. 5.2.1 Magnification Factor According to the actual situation of printing enterprises, the magnification factor should be controlled between 0.9 and 2.0 (the magnification factor for EAN/UPC code barcodes is 0.80–2.00). The barcode symbol enlarges or shrinks with the magnification factor. When the magnification factor is 1.00, the symbol size of an EAN-13 barcode is shown in Figure 1. To ensure correct barcode recognition, printing enterprises should follow the original film specifications and avoid arbitrary adjustments to the magnification factor. The module width and main dimensions of EAN barcodes corresponding to different magnification factors are shown in Table 1. 5.2.2 Left and Right Side Blank Area Width Sufficient blank areas should be provided on both sides of the barcode (left side ≥ 3.63 × magnification factor, right side ≥ 2.31 × magnification factor). Considering factors such as ink penetration, under normal c

Development Information

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