An ink set including a yellow ink composition, a magenta ink composition, a cyan ink composition, and a black ink composition, in which the respective ink compositions contain a radical polymerizable compound (component A), a radical polymerization initiator (component B), and a colorant (component C) respectively, the component B included in the respective ink compositions contains an acylphosphine oxide compound (component B-1) and a thioxanthone compound (component B-2) respectively, the respective ink compositions contain from 3% by mass to less than 17% by mass of the component B-1, the magenta ink composition and the cyan ink composition contain from 0.1% by mass to less than 2% by mass of the component B-2, and the yellow ink composition and the black ink composition contain from 2% by mass to less than 6% by mass of the component B-2.
一种油墨组合物,包括黄色油墨组合物、品红色油墨组合物、青色油墨组合物和黑色油墨组合物,其中各油墨组合物分别含有可自由基聚合的化合物(组分 A)、自由基聚合
引发剂(组分 B)和
着色剂(组分 C)、各油墨组合物中包含的组分 B 分别含有酰基氧化膦化合物(组分 B-1)和
硫氧杂蒽酮化合物(组分 B-2),各油墨组合物中的组分 B-1 的质量百分比为 3%至小于 17%,品红色油墨组合物和青色油墨组合物中的组分 B-1 的质量百分比为 0.以质量计,品红色油墨组合物和青色油墨组合物含有 0.1% 至低于 2% 的组分 B-2,而黄色油墨组合物和黑色油墨组合物含有 2% 至低于 6% 的组分 B-2。