Toner Resin Composition for High Density Image Quality

The patent changes the chemical composition parameters of the resin binder by incorporating specific resin compositions (P) and (W) with defined functional groups and molecular structures. This modifies the resin's interaction properties with colorants, enabling improved dispersibility even at higher colorant concentrations, thus resolving the contradiction between image density and dispersibility

The patent uses a composite resin binder system comprising multiple resin components (P) and (W) with different chemical characteristics. This composite structure provides both the binding strength needed for high colorant loading and the dispersibility-enhancing properties through synergistic interactions between different resin types, resolving the contradiction between image density and colorant dispersibility

The patent modifies the resin binder's chemical parameters to enhance colorant dispersibility and distribution uniformity. This allows the toner to achieve high image density and quality even at lower deposition amounts, as the improved resin-colorant interaction ensures effective color transfer and image formation with minimal toner material

The patent enhances the local quality of the resin binder by incorporating specific functional groups and molecular structures that improve colorant-wetting and distribution properties at the microscopic level. This localized improvement in resin-colorant interaction ensures uniform colorant distribution throughout the toner particles, enabling high image quality and density at low deposition amounts