Toner Composition

A method for preparing a white pulverized toner, the method comprising:

• mixing a resin;
• a BaSO4 pigment, wherein a particle size is defined as Span=(Dn90−Dn10)/(Dn50), and wherein the BaSO4 pigment has a wide particle size distribution wherein the Span is 0.75 or greater;
• an optional wax, and an optional internal additive to form a mixture;
• melting and extruding the mixture to form a melt-kneaded product;
• pulverizing the melt-kneaded product to form white toner particles;
• optionally, classifying the white toner particles;
• and
• optionally, disposing one or more surface additives onto the white toner particles.

An emulsion aggregation toner process comprising:

• obtaining a latex of at least one resin;
• obtaining an aqueous dispersion of a BaSO4 pigment, wherein a particle size is defined as Span=(Dn90−Dn10)/(Dn50), and wherein the BaSO4 pigment has a wide particle size distribution wherein the Span is 0.75 or greater;
• optionally, obtaining an aqueous dispersion of an optional wax;
• forming a mixture of the latex of at least one resin, the aqueous dispersion of the BaSO4 pigment, and the aqueous dispersion of the optional wax;
• heating the mixture to a first temperature;
• maintaining the first temperature to form aggregated toner particles;
• adding a latex of shell resin to form a shell over the aggregated particles;
• optionally, adding a solution of a chelating agent;
• stopping further aggregation and raising the temperature to a second temperature that is higher than the first temperature to coalesce the aggregated particles;
• cooling, optionally washing, optionally drying, and recovering the emulsion aggregation toner particles.