thermal printing label barcode labels 40x30 58x40 60x40

The scale label surface is coated with a heat-reactive layer which turns black when in contact with the heat from the print head. This heat-reactive surface will effectively cause the print to fade when exposed to sunlight, strong artificial light or friction (cartons rubbing together in transit for instance) with the speed of fading dependent upon the intensity of the light or friction. For this reason, direct thermal labels tend to be used for short-shelf-life products such as fresh food. Although there are no ribbon costs associated with these weigh scale labels, there are other cost implications as without the ribbon acting as a protective insulator between the print head and the thermal scale labels, the print head will wear more quickly requiring more frequent replacement.