Quiet Zone in Barcodes

The quiet zone (also known as no-print zone) corresponds to the blank margin found at both ends of a barcode.

Although indifferent to the human eye, the quiet zone is an essential part of a barcode as it tells barcode readers where the code begins and where it ends.

As already mentioned, the quiet zone allows barcode readers to determine the beginning and end of a barcode. Without a quiet zone, barcode readers would therefore not be able to scan and read the information contained in a barcode. It is therefore crucial that companies respect the quiet zone dimensions recommended for each barcode type.

The width of the quiet zone essentially depends on the type of barcode. For example:

• For traditional 1D barcodes (white and black bars), the quiet zone should be either ¼ inches or at least ten times the width of the narrowest bar, whichever is greater.

• For 2D barcodes (e.g., QR codes, datamatrix codes), the quiet zone should equal at least four times the size of the smallest element. Moreover, the quiet zone should be present on all four sides of the barcode.

In order to ensure a compliant quiet zone and a readable barcode, manufacturers and companies should pay attention to the following aspects:

• Width of the quiet zone. The minimum recommended width specified for each barcode type should always be respected. Otherwise, the risk of printing an unreadable barcode increases.

• Elements near the barcode. If the barcode is placed near other elements, these elements may prevent the barcode reader from identifying the beginning and end of the barcode.

• Colour contrast. A weak colour contrast (for example, a yellow barcode printed on a white background) may prevent the barcode reader from differentiating the barcode from its background. As a result, the reader is unable to identify where the barcode begins and ends.

• Location where the label is printed or applied. If the label is printed or applied near the edge of a box, container or similar object, this may reduce the width of the quiet zone and make the barcode unreadable.

We are worldwide experts in all things related to labeling. Do you need a labeling machine able to print and/or apply barcodes with a wide enough quiet zone? Don’t worry, at Weber Marking Systems, we will provide you with the right solution!

We can also manufacture your labels for you and ensure that all their elements (including the quiet zone) comply with the necessary requirements. Jet get in contact with us, we will be happy to talk to you!