Thermal Direct labels are manufactured from heat-sensitive label material which turns black when it comes into contact with the thermal printhead in the label printer. Direct thermal printing is cost-effective media option and ideal for printing sharp, clear barcodes. Typical applications include short-life transport labels and cold environment labelling. No Thermal Ribbon is required with direct thermal labels.
Since thermal direct labels react to heat, they are also sensitive to sunlight which can cause labels to blacken, as can scuffing or rubbing during transport. Also, the thermal image may fade after a length of time.