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AssigneeToshiba Tec Kabushiki Kaisha
InventorsTakayasu Aoki, Motonari Udo, Tsuyoshi Itou, Masahiro Ikuta, Takafumi Hara
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Disclosed is a decolorable toner produced by aggregating dispersed fine particles of a color material containing at least a color-forming compound, a color-developing agent and a decoloring agent with dispersed fine particles containing at least a binder resin having a carboxyl group, then adding a compound having a carbodiimide group or an epoxy group reactive with the carboxyl group of the binder resin, and thereafter fusing the aggregate particles, respectively in an aqueous medium. The thus obtained decolorable toner can suppress the generation of fine powder by the release of erasable color material fine particles from the toner particles.
A decolorable toner comprising:
A process for production of a decolorable toner, comprising:
A decolorable toner comprising aggregate particles, wherein each aggregate particle further comprises particles of a polyester binder resin, and particles of a microencapsulated color material, said microencapsulated color material further comprising a color-forming compound, a color-developing agent and a decoloring agent, wherein a surface region of the aggregate particles comprises a reactive compound having a carbodiimide group or an epoxy group.
Dependencies are inferred from the claim text.