The beauty of direct thermal labels is that printer ribbons are not necessary. In fact, direct thermal printers simply use heat to imprint direct thermal labels with the desired information. No more ordering printer ribbons. Stock direct thermal labels are simply blank white labels that come with dimensions 1 x 2 to 4 x 6 direct thermal labels and innumerable dimensions in between. Direct thermal labels are designed to go through all standard direct thermal printers. One of the most common direct thermal labels used are 4x6 direct thermal labels. Direct thermal labels can be differentiated from thermal transfer labels by reading through our labeling tips section.