What are the standards for marking barcodes with a laser marking machine?
When marking barcodes, laser marking machines need to follow a series of standards to ensure the readability and accuracy of the barcodes. The following are some common standards and norms:
I. International Standards
(1) ISO/IEC 15416
ISO/IEC 15416 is an international standard for the assessment of barcode printing quality. This standard specifies the printing quality requirements for barcodes, including the contrast, dimensional accuracy, and readability of barcodes. When marking barcodes with a laser marking machine, it is necessary to ensure that the barcodes comply with the requirements of this standard.
Ii. Barcode Types
(1) One-dimensional barcodes
One-dimensional barcodes are the most common type of barcode, including the following:
-Code 39: A commonly used barcode that can represent letters and numbers.
-Code 128: A high-density barcode that can represent letters, numbers and some special characters.
EAN-13: A barcode used for retail goods, which can represent 13 digits.
EAN-8: A shorter barcode used for small items, capable of representing 8 digits.
(2) Two-dimensional barcodes
Two-dimensional barcodes can store more information, including the following types:
QR Code: A common two-dimensional barcode that can represent a large amount of data, including text, web addresses, etc.
-Data Matrix: A matrix type of two-dimensional barcode, suitable for storing a large amount of data on a small area.
Iii. Printing Standards
(1) The size and proportion of the barcode
The size and proportion of the barcode need to be set strictly in accordance with the standards to ensure the readability of the barcode. For instance, the width, height and the ratio of bars to Spaces of the barcode all need to comply with the standards.
(2) Contrast
The contrast of barcodes is a key factor affecting readability. The laser marking machine needs to ensure that there is sufficient contrast between the bars and Spaces of the barcode so that the scanning device can accurately read it.
(3) Check code
Some barcode types (such as Code 39, EAN-13, etc.) need to include check codes to ensure the accuracy of the barcodes. When marking, the laser marking machine needs to accurately calculate and add the check code.
Iv. Practical Operation Steps
(1) Select the appropriate laser marking machine
Select the appropriate laser marking machine based on the material and application requirements. For instance, fiber laser marking machines are suitable for metal materials, while CO? Laser marking machines are more suitable for non-metallic materials.
(2) Set the marking parameters
Set parameters such as the type, size and contrast of the barcode in the laser marking software. Ensure that the printing quality of the barcode complies with the ISO/IEC 15416 standard.
(3) Testing and Verification
Before the formal marking, conduct test marking and verify the readability of the barcode using a barcode scanning device. Ensure that the barcode can be accurately read in practical applications.
By following the above standards and norms, laser marking machines can achieve high-quality barcode marking, ensuring the reliability and accuracy of barcodes in various application scenarios.
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