Single component developer of emulsion aggregation toner

A set of four toners for developing electrostatic images in a single component development (SCD) system comprising a, a cyan toner, a magenta toner, a yellow toner and a black toner, wherein each of the toners is a single component developer free of carrier and each of the cyan toner, magenta toner and yellow toners are comprised of emulsion aggregation toner particles comprising a styrene acrylate polymer binder, at least one release agent and at least one colorant,

• wherein each of the toner particles have a volume average particle size of from about 5 μm to about 10 μm, an average circularity of about 0.95 to about 0.99, a volume and number geometric standard deviation (GSDv and n) of from about 1.10 to about 1.30, and an onset glass transition temperature of from about 45° C. to about 65° C., and
• wherein each of the toner particles further include a shell layer thereon comprising a styrene acrylate polymer, and wherein the styrene acrylate polymer of the shell layer and the styrene acrylate polymer binder are the same or are composed of a similar polymer with different chemical and physical characteristics.

A single component development (SCD) system including an image developing station, wherein a housing of the SCD system contains a single component developer for developing electrostatic images and including toner comprising emulsion aggregation toner particles comprising a styrene acrylate polymer binder, at least one release agent and at least one colorant, wherein the toner particles have a volume average particle size of from about 5 μm to about 10 μm, an average circularity of about 0.95 to about 0.99, a volume and number geometric standard deviation (GSDv and n) of from about 1.10 to about 1.30, and an onset glass transition temperature of from about 45° C. to about 65° C., and the single component developer is provided from the housing to the image developing station,

• wherein the toner particles further include a shell layer thereon comprising a styrene acrylate polymer, and wherein the styrene acrylate polymer of the shell layer and the styrene acrylate polymer binder are the same or are composed of a similar polymer with different chemical and physical characteristics.

A method of forming an image with a single component developer, wherein the single component developer comprises toner particles free of carrier, comprising applying the toner particles having a triboelectric charge to an oppositely charged latent image on an imaging member to develop the image, and transferring the developed image to an image receiving substrate, and wherein the toner particles comprise emulsion aggregation toner particles comprising a styrene acrylate polymer binder, at least one release agent and at least one colorant, wherein the toner particles have a volume average particle size of from about 5 μm to about 10 μm, an average circularity of about 0.95 to about 0.99, a volume and number geometric standard deviation (GSDv and n) of from about 1.10 to about 1.30, and an onset glass transition temperature of from about 45° C. to about 65° C.,

• wherein the toner particles further include a shell layer thereon comprising a styrene acrylate polymer, and wherein the styrene acrylate polymer of the shell layer and the styrene acrylate polymer binder are the same or are composed of a similar polymer with different chemical and physical characteristics.