A yellow toner that is, even in small amounts, better in chroma than ever before. Disclosed is a yellow toner comprising a binder resin and a yellow colorant, wherein, as the yellow colorant, a compound A represented by the following general formula (1) and a compound B represented by the following formula (2) or (3) are contained, and wherein, with respect to 100 parts by mass of the binder resin, a content of the compound A is from 1 part by mass to 15 parts by mass, and a content of the compound B is from 0.1 part by mass to 8.0 parts by mass: ##STR00001##

An electrostatic-image developing toner contains toner particles containing a polycondensate resin and hydrophobic external additive particles having a volume average particle size of about 40 to about 200 nm. The electrostatic-image developing toner has a difference between a half-fall temperature T1/2A and a half-fall temperature T1/2B of about 2.0 C. to about 10 C. The half-fall temperature T1/2A is measured with a flow tester after storage in an environment at 50 C. and an absolute humidity of 16.5 g/m.sup.3 for 2 hours. The half-fall temperature T1/2B is measured with a flow tester after storage in an environment at 50 C. and an absolute humidity of 82.7 g/m.sup.3 for 2 hours.

An image forming method uses a toner including toner particles including a binder resin and an ultraviolet light absorber. Content of the ultraviolet light absorber is within a range of 0.1 to 50 mass % with respect to total mass of the toner particles. The method includes: transferring a toner image formed with the toner on a recording medium; and irradiating the toner image transferred on the recording medium with monochromatic light having a maximum emission wavelength within a wavelength range of 280 to 550 nm to melt and fix the toner image.

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 yellow toner that is, even in small amounts, better in chroma than ever before. Disclosed is a yellow toner comprising a binder resin and a yellow colorant, wherein, as the yellow colorant, a compound A represented by the following general formula (1) and a compound B represented by the following formula (2) or (3) are contained, and wherein, with respect to 100 parts by mass of the binder resin, a content of the compound A is from 1 part by mass to 15 parts by mass, and a content of the compound B is from 0.1 part by mass to 8.0 parts by mass:

##STR00001##

An image forming method uses a toner including toner particles including a binder resin and an ultraviolet light absorber. Content of the ultraviolet light absorber is within a range of 0.1 to 50 mass % with respect to total mass of the toner particles. The method includes: transferring a toner image formed with the toner on a recording medium; and irradiating the toner image transferred on the recording medium with monochromatic light having a maximum emission wavelength within a wavelength range of 280 to 550 nm to melt and fix the toner image.

An electrostatic-image developing toner contains toner particles containing a polycondensate resin and hydrophobic external additive particles having a volume average particle size of about 40 to about 200 nm. The electrostatic-image developing toner has a difference between a half-fall temperature T1/2A and a half-fall temperature T1/2B of about 2.0 C. to about 10 C. The half-fall temperature T1/2A is measured with a flow tester after storage in an environment at 50 C. and an absolute humidity of 16.5 g/m.sup.3 for 2 hours. The half-fall temperature T1/2B is measured with a flow tester after storage in an environment at 50 C. and an absolute humidity of 82.7 g/m.sup.3 for 2 hours.

An electrostatic charge image developing toner includes: toner base particles containing a binder resin and a metal pigment; and an external additive containing lanthanum-containing strontium titanate particles.

A coating material which is processable by non-impact printing to form at least a part of a coating layer representing an image, the coating material having an amorphous resin portion, is curable and is configured for being applied with a thickness of at least 15 m, the coating material having one or more of the following: a polyester resin having at least one incorporated acid monomer and wherein at least 10 weight percent of the at least one incorporated acid monomer is isophthalic acid; a polyester resin containing 1 to 100 w-% of cycloaliphatic glycol compounds with respect to the total weight of the glycol compounds of the polyester resin component; an acrylic resin; a fluorine containing polymer; a polyurethane resin.