Cabot Ink Jet Colorants Division has commercialized a family of self-dispersed aqueous pigments for a decade. The proprietary surface modification technology is based on the application of the diazonium reaction with a variety of functionalized anilines. The choice of the functional group on the aniline plays a critical role in governing a variety of performance characteristics of the dispersion. Most recently, Cabot has developed materials where the functional group on the aniline treating agent is designed for selective interaction with components found in plain paper. This talk will focus on the performance characteristics that can be obtained through targeted design of the treating agent chemistry.