Different labels are printed by various label printers. Generally, there are two printing methods for label printers: thermal and thermal transfer. These methods are related to the printing technique and consumables used. Let’s explore the differences between thermal and thermal transfer label printing methods!
01 Different Technical Principles
Thermal Transfer: This method uses heat to transfer special ink from a ribbon onto the printing material, forming patterns on the label material.
Direct Thermal: This technique utilizes a thermal print head, a precise electrothermal device with many tiny heating elements. When these elements heat up, they cause the corresponding areas on the heat-sensitive paper to turn black. As the paper roll moves, driven by a motor, the heating elements activate according to the print data, ultimately creating text or images on the label.
02 Different Printing Consumables
Thermal Transfer: Requires ink ribbons or carbon ribbons.
Direct Thermal: Does not require ribbons, only special heat-sensitive paper.
Thermal Transfer can print on various materials such as PET, PVC, reflective film, aluminum alloy, and composite PET materials.
Direct Thermal only uses specially coated thermal paper that changes color through a chemical reaction when heated.
03 Different Label Shelf Life
Thermal Transfer: Labels can last for extended periods, typically around 10 years, depending on the quality of the label material and ribbon.
Direct Thermal: Labels have a shorter lifespan, generally about six months. The exact preservation time closely relates to storage conditions, usage environment, exposure to light, temperature, and climate.