SOLVENT-BASED INKJET INKS COMPRISING SURFACE-MODIFIED PIGMENTS

摘要

A solvent-based ink composition for a thermal inkjet printhead comprises a surface- modified pigment. The ink composition comprises: (a) 10 - 80 wt. % of a compound of formula (A); wherein: R 1 is C 1-6 alkyl; and each of R 2, R 3 and R 4 is independently selected from H, C 1-6 alkyl, halogen, OH, and C 1-6 alkoxy; (b) 10 - 80 wt. % of a C 1-6 alcohol; and 10 (c) 0.01 - 25 wt. % of the surface-modified pigment.