A toner includes binder resin 101 and a coloring agent 102. The coloring agent 102 is configured so that hue of a hue measurement print image printed on a print medium with the toner satisfies 8.6a*(Y)7.9 and 93.4b*(Y)95.4, where a*(Y) and b*(Y) represent an a* value and a b* value of the hue measurement print image and light resistance F of a light resistance measurement print image printed on a print medium with the toner, after an irradiation test in which the light resistance measurement print image is irradiated with light having 0.36 W/m.sup.2 spectral irradiance at a wavelength of 340 nm for 663 hours, is higher than or equal to 70%. The toner is configured so that its melt viscosity at 120 C. is higher than or equal to 1400 Pa.Math.s and lower than or equal to 1600 Pa.Math.s.

The present disclosure relates to toner compositions containing an IR-taggant, and method of making thereof. The disclosure also relates to method for confirming authenticity of an item.

A toner is provided. The toner comprises a glittering pigment and a coloring pigment. The glittering pigment is disposed inside the toner. The coloring pigment comprises a yellow pigment comprising an isoindoline pigment.

Provided is a magenta toner, which is excellent in image density, has an enhanced chargeability, and can be produced at a low cost. The magenta toner comprising a binder resin and a magenta colorant, wherein a compound A represented by the general formula (1) and a compound B represented by the general formula (2) are contained as the magenta colorant, and wherein a total content of the compound A and the compound B is from 3 to 30 parts by mass with respect to 100 parts by mass of the binder resin, and a mass ratio of the content of the compound A to the content of the compound B (compound A/compound B) is from 0.8 to 20.

The present disclosure relates to toner compositions containing an IR-taggant, and method of making thereof. The disclosure also relates to method for confirming authenticity of an item.

A toner includes binder resin 101 and a coloring agent 102. The coloring agent 102 is configured so that hue of a hue measurement print image printed on a print medium with the toner satisfies 8.6a*(Y)7.9 and 93.4b*(Y)95.4, where a*(Y) and b*(Y) represent an a* value and a b* value of the hue measurement print image and light resistance F of a light resistance measurement print image printed on a print medium with the toner, after an irradiation test in which the light resistance measurement print image is irradiated with light having 0.36 W/m.sup.2 spectral irradiance at a wavelength of 340 nm for 663 hours, is higher than or equal to 70%. The toner is configured so that its melt viscosity at 120 C. is higher than or equal to 1400 Pa.Math.s and lower than or equal to 1600 Pa.Math.s.

A process includes forming an emulsion comprising a monomer and a colorant, the colorant further including an anionic functional group and a lipophilic counter ion, and polymerizing the monomer to form a latex, the latex includes polymer nanoparticles having the colorant dispersed therein.

A toner is provided. The toner comprises a glittering pigment and a coloring pigment. The glittering pigment is disposed inside the toner. The coloring pigment comprises a yellow pigment comprising an isoindoline pigment.

A process includes forming an emulsion comprising a monomer and a colorant, the colorant further including an anionic functional group and a lipophilic counter ion, and polymerizing the monomer to form a latex, the latex includes polymer nanoparticles having the colorant dispersed therein.

In a toner containing a binder resin, a pigment, a pigment dispersant, and a fixing assistant, the pigment dispersant has a structure represented by formula (1) or a tautomer thereof and a polymer moiety, the binder resin and the fixing assistant satisfy formula (2), and a hydrophobic parameter HP1 of the pigment dispersant and a hydrophobic parameter HP2 of the fixing assistant satisfy formula (3).

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