| 摘要 |
A black ink composition for post print and preprint, obtainable by adding (colour concentrate mixture) solid red concentrate, blue concentrate, and green concentrate to a carbon black ink having a concentration of 10-25% by weight of the composition, wherein the carbon black has not undergone oxidation treatment, and the colour pigments are made up 75-90% by weight. |
| 主权项 |
1. A black ink composition for post print and preprint, obtainable by adding (colour concentrates mixture) solid red concentrate, blue concentrate, and green concentrate to a carbon black ink having a concentration of 10-25% by weight of the composition, wherein the carbon black has not undergone oxidation treatment, and the colour concentrate are made up 75-90% by weight. |
