| Step | Operation | Criterion |
|---|---|---|
| Step 1: Check Actual Temperature | Point infrared thermometer at center of heating plate, compare with display | Over 5℃ difference → thermostat drift, contact manufacturer for repair |
| Step 2: Check Fabric Composition | Check garment care label | "100% Cotton" → sublimation won't work, switch to adhesive film/vinyl |
| Step 3: Inspect Consumables | Check if transfer paper has been opened long ago or shows moisture signs | Paper feels soft or has wavy edges → moisture damage, replace with fresh paper |
| Step 4: Extend Time | Add 10-15 seconds to original setting and retry | Color deepens → time was insufficient; no change → go back to Step 1 |
One-Sentence Summary: Temperature, fabric, consumables, and time – at least one of these four is off. Follow the steps and fix it in 5 minutes.
Prevention: Store opened transfer paper in sealed bags with desiccant. Run a test print whenever switching to a new fabric.