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Overview of the appearance of a coffee ring during different ink and sintering configurations. Using the appropriate sintering technique according to the ink type leads to a significant lower coffee ring effect (130–150% instead of 240–350% of the average layer thickness).
| Ink Type and Sintering Method | Coffee Ring Effect (% of Average Layer Thickness) | Ink Optimization |
|---|---|---|
| JS-B40G/OVEN | 130–140 | OVEN |
| JS-B40G/NIR (cont.) | 240–350 | OVEN |
| JS-A102A/OVEN | 260–330 | NIR |
| JS-A102A/NIR (flash) | 137–150 | NIR |
