Provided is a black ink capable of mitigating the dependency on image quality of recording media and giving a high quality image stably, which comprises at least one salt selected from the group consisting of (M1)2SO4, CH3COO(M1), Ph_COO(M1), (M1)NO3, (M1)Cl, (M1)Br, (M1)I, (M1)2SO3 and (M1)2CO3, where M1 is an alkali metal, ammonium or organo-ammonium and Ph is a phenyl group, and a self dispersible carbon black.
本发明提供了一种黑色墨
水,它能够减轻对记录介质图像质量的依赖性,并能稳定地生成高质量的图像,该墨
水由至少一种盐组成,这些盐选自 (M1)2SO4、CH3COO(M1)、Ph_COO(M1)、(M1)
NO3、(M1)Cl、(M1)Br、(M1)I、(M1)2SO3 和 (M1)2CO3(其中 M1 是碱
金属、
铵或有机
铵,Ph 是苯基)组成的组中选出的至少一种盐,以及一种自分散
炭黑。