Color toner, method and apparatus for use

A combination of four color toners for the development of electrostatic latent images enabling the formation of a full color gamut image, and wherein the four toners consist essentially of a cyan toner, a magenta toner, a yellow toner, and a black toner, each of said toners being comprised of resin and pigment, and wherein the pigment for the cyan toner is a .beta. copper phthalocyanine, the pigment for the magenta toner is a xanthene silicomolybdic acid salt of Rhodamine 6G basic dye, the pigment for the yellow toner is a diazo benzidine, and the pigment for the black toner is carbon black, and wherein each of said cyan, magenta and yellow pigment is dispersed in said toners by a flushing process, which process consists essentially of mixing a wet cake of said magenta pigment and said toner resin, a wet cake of said yellow pigment and said toner resin, and a wet cake of said cyan pigment with said toner resin, thereafter heating to remove water enabling a pigment amount of from about 25 to about 50 weight percent, and wherein each of the resulting pigmented resin concentrated products is mixed and diluted with additional toner resin to generate cyan, magenta and yellow toners, each of said cyan, magenta and yellow pigments, respectively, being present in an amount of from about 20 to about 40 weight percent, and wherein each of said cyan, magenta and yellow pigments possesses an average particle diameter size of from about 0.01 to about 3 microns, and wherein said black pigment possesses an average particle diameter of from about 0.001 to about 0.1 micron.

A combination, set, or gamut of four color toners each for the development of electrostatic latent images enabling the formation of full color gamut images, and wherein the four toners consisting essentially of a cyan toner, a magenta toner, a yellow toner, and a black toner, each of said toners being comprised of resin and pigment, and wherein the pigment for the cyan toner is a .beta. copper phthalocyanine, the pigment for the magenta toner is a xanthene silicomolybdic salt of Rhodamine 6G basic dye, the pigment for the yellow toner is a diazo benzidine, and the pigment for the black toner is carbon black, and wherein each of said cyan, magenta and yellow pigment is dispered in said toners by a flushing process, which process consists essentially of mixing a wet cake of said magenta pigment, a wet cake of said yellow pigment, and a wet cake of said cyan pigment with said toner resin, thereafter heating to remove water enabling a pigment amount of about 50 weight percent, and wherein each of the resulting pigmented resin concentrated products is mixed and diluted with additional toner resin to generated cyan, magenta and yellow toners, each of cyan, said magenta and yellow pigments, respectively, being present in an amount of from about 20 to about 40 weight percent, and wherein each of said cyan, magenta and yellow pigments possesses an average particle diameter size of from about 0.001 to about 3 microns, and wherein said black pigment possesses an average particle diameter of from about 0.001 to about 0.1 micron.

A combination of toners consisting essentially of a combination of four toners, each for the development of electrostatic latent images enabling the formation of full color gamut images, and wherein the four toners are comprised of a cyan toner, a magenta toner, a yellow toner, and a black toner, each of said toners being comprised of resin and pigment, and wherein the pigment for the cyan toner is a .beta. copper phthalocyanine, the pigment for the magenta toner is a xanthene silicomolybdic acid salt of Rhodamine 6G basic dye, the pigment for the yellow toner is a diazo benzidine, and the pigment for the black toner is carbon black wherein the fused images obtained with said toner combination has a Gardner Gloss value of from about 40 to 70 gloss units, wherein from about 70 to about 98 percent of the transmitted light passing through said fused image contained on a transparency reaches a projection screen from an overhead projector, wherein each of said cyan, magenta, and yellow pigments have a particle diameter size or a agglomerate diameter size of from about 0.01 micron to about 0.3 micron, and from about 0.001 to about 0.1 micron for said black pigment, and said pigments are dispersed into said toner resin uniformly to thereby minimize light scattering and increase color gamut in reflection copy and overhead transparency copy, wherein each of said cyan, magenta, and yellow pigments are dispersed by flushing said cyan, magenta, and yellow pigment into said toner resin, and wherein a cyan, magenta, and yellow pigment water wet cake is mixed with toner resin and the water is removed to generate pigmented resin containing from about 25 to about 50 weight percent of pigment based on weight percent of said toner resin and said pigment, and wherein each of the resulting pigmented resin concentrate products is mixed and diluted with additional toner resin to generate cyan, magenta, and yellow toners containing each of said cyan, magenta, or yellow pigments, respectively, in an amount of from about 2 to about 15 weight percent.

An imaging process which consists essentially of the generation of an electrostatic image on a photoconductive imaging member followed by the development thereof with a combination, set, or gamut of toners, and wherein four toners are selected, and which toners are comprised of a cyan toner, a magenta toner, a yellow toner, and a black toner, each of said toners being comprised of resin and pigment, and wherein the pigment for the cyan toner is a .beta. copper phthalocyanine, the pigment for the magenta toner is a xanthene silicomolybdic acid salt of Rhodemine 6G basic dye, the pigment for the yellow toner is a diazo benzidine, and the pigment for the black toner is carbon black;

• thereafter transferring the developed image to a substrate, and fixing the image thereto, and wherein said cyan pigment, said magenta pigment, and said yellow pigment are prepared by flushing process, and which process consists essentially of mixing a wet cake of said magenta pigment, a wet cake of said yellow pigment, and a wet cake of said cyan pigment with said resin, thereafter heating to remove water enabling a pigment amount of from about 25 to about 50 weight percent, and wherein each of the resulting pigmented resin concentrate product is mixed and diluted with additional toner resin to generate cyan, magenta and yellow toners, each containing said cyan, magenta and yellow pigments respectively, being present in an amount of from about 20 to about 40 weight percent.

A xerographic imaging and printing apparatus consisting of in operative relationship of an imaging member component, a charging component, development components, a transfer component, and a fusing component, and wherein said development components include therein carrier and a combination of four color toners, and wherein the four toners are comprised of a cyan toner, a magenta toner, a yellow toner, and a black toner, respectively, each of said toners being comprised of resin and pigment, and wherein the pigment for the cyan toner is a .beta. copper phthalocyanine, the pigment for the magenta toner is a xanthene silicomolybdic acid salt of Rhodamine 6G basic dye, the pigment for the yellow toner is a diazo benzidine, and the pigment for the black toner is carbon black, wherein said cyan pigment, said magenta pigment, and said yellow pigment are prepared by a flushing process, and which process consist essentially of mixing a wet cake of said magenta pigment, a wet cake of said yellow pigment, and a wet cake of said cyan pigment with said resin thereafter heating remove water enabling a pigment amount of from about 50 weight percent, and wherein each of the resulting pigmented resin concentrate products is mixed and diluted with additional toner resin to generate cyan, magenta and yellow toners, each containing said cyan, magenta and yellow pigments, respectively, being present in an amount of from about 2 to about 25 weight percent.

A combination of four color toners for the development of electrostatic latent images enabling the formation of a full color gamut image, and wherein the four toners consist of a cyan toner, a magenta toner, a yellow toner, are a black toner, each of said toners being comprised of resin and pigment, and wherein the pigment for the cyan toner is a .beta. copper phthalocyanine, the pigment for the magenta toner is a xanthene silicomolybdic acid salt of Rhodemine 6G basic dye, the pigment for the yellow toner is a diazo benzidine, and the pigment for the black toner is carbon black, and wherein each of said cyan, magenta and yellow pigments is dispersed in said toners by a flushing process, which process consists of mixing a wet cake of said magenta pigment, a wet cake of said yellow pigment, and a wet cake of said cyan pigment with said toner resin, thereafter heating to remove water enabling a pigment amount of about 50 weight percent, and wherein each of the resulting pigmented resin concentrate products is mixed and diluted with additional toner resin to generate cyan, magenta and yellow toners each containing said cyan, magneta and yellow pigments respectively in an amount of from about 20 to about 40 weight percent, and wherein each of said cyan, magenta and yellow pigments posesses an average particle diameter size of from about 0.01 to about 3 microns, and wherein said black pigment possesses an average particle diameter of from about 0.001 to about 0.1 micron.