Table 1 Evaluation of ink’s stability considering stability of blue wool standards (minimum 1, maximum 8)
From: Study of stability of brown-gray inks on paper support
Sample | Degree of stability at the maximal aging time of | ||
|---|---|---|---|
Light aging | Thermal aging | Thermal aging with NO 2 | |
W | 8 | 7 | 6 |
B | 6 | 7 | 7 |
S | 7 | 7 | 6 |
IGI 11 | 6 | 4 | 4 |
IGI 12 | 6 | 5 | 5 |