Problem/Question
1. Difference between direct thermal (DT) and thermal transfer (TT).
2. How to identify direct thermal (DT) and thermal transfer (TT).
Applicable To
Consumable Labels
Resolution/Answer
Test Procedure
1. Take a sample of the media you want to test.
2. Using your fingernail or a pen cap, apply firm and quick pressure while dragging it across the media surface.
3. Observe the results of the scratch test below.
Interpreting Results:
| Media Type | Scratch Test Indicator | Explanation | Printing Method |
| Direct Thermal |
A black mark appears on the scratched area. |
Direct thermal media is chemically treated to react to heat. The friction from scratching generates enough heat to activate the chemical coating. | No ribbon required, compatible with direct thermal printers. |
| Thermal Transfer |
No black mark appears on the scratched area. |
Thermal transfer media lacks the heat-sensitive chemical coating. | Ribbon required, compatible with thermal transfer printers. |
This simple scratch test helps quickly determine whether your media requires a ribbon (thermal transfer) or not (direct thermal) for printing, ensuring you use the correct printing method and equipment.
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