A toner set including a color toner including a binder resin and a colorant, and an invisible toner including a binder resin and a near infrared light-absorbing material, wherein 60-degree glossiness of a solid image of the invisible toner is 30 or greater, and the 60-degree glossiness of the solid image of the invisible toner is higher than 60-degree glossiness of a solid image of the color toner by 10 or greater.

A toner includes a europium complex represented by the following Chemical formula

##STR00001##

where A represents 2-naphthyl group, 2-naphthyl group having a substitution group selected from the group consisting of an alkyl group, an alkoxy group, and a halogen, R represents a fluoroalkyl group having one to three carbon atoms or a methyl group, and R.sup.1, R.sup.2, R.sup.3, and R.sup.4 each, independently represent hydrogen atoms, alkyl groups, or aryl groups, wherein the toner has a hydroxyl value of from 20 to 40 mgKOH/g.

A positively chargeable toner includes a plurality of toner particles. Each of the toner particles includes a toner mother particle and an external additive adhering to a surface of the toner mother particle. The external additive includes a plurality of resin particles. Each of the resin particles has a resin mother particle and a coat layer covering at least a portion of a surface of the resin mother particle. The coat layer contains a specific vinyl resin.

A positively chargeable toner includes a plurality of toner particles. The toner particles each include a toner mother particle and an external additive attached to a surface of the toner mother particle. The toner mother particle contains a binder resin and a wax. The external additive includes a plurality of antioxidant particles. Each of the antioxidant particles includes a base particle containing an antioxidant and having a surface treated with a surface treatment agent. The surface treatment agent has a first functional group and a second functional group in a molecule thereof. The first functional group has stronger positive chargeability than the base particle. The second functional group has stronger hydrophobicity than the base particle.

A binder resin for toner of the present invention comprising: a polyester resin (A) which contains a constitutional unit derived from isosorbide and has a softening temperature of 120 C. or lower; and a polyester resin (B) different from the polyester resin (A), wherein the binder resin for toner has a hygroscopicity index of 2 or less and contains a tetrahydrofuran-insoluble matter at 5% by mass or less.

A positively chargeable toner includes a plurality of toner particles. Each of the toner particles includes a toner mother particle and an external additive adhering to a surface of the toner mother particle. The external additive includes a plurality of resin particles. Each of the resin particles has a resin mother particle and a coat layer covering at least a portion of a surface of the resin mother particle. The coat layer contains a specific vinyl resin.

Disclosed herein are methods of electrostatically printing a cyclodextrin composition on a substrate, the method including forming an electrostatically printable composition comprising a polymer and one or more cyclodextrins, one or more cyclodextrin inclusion complexes, or a combination thereof, and electrostatically printing the composition on a substrate. Also described are electrostatically printable compositions, methods of making the compositions, printing systems employing the compositions, substrates having the composition electrostatically printed thereon, laminates thereof, and uses of the printed substrates and laminates.

A positively chargeable toner includes a plurality of toner particles. The toner particles each include a toner mother particle and an external additive attached to a surface of the toner mother particle. The toner mother particle contains a binder resin and a wax. The external additive includes a plurality of antioxidant particles. Each of the antioxidant particles includes a base particle containing an antioxidant and having a surface treated with a surface treatment agent. The surface treatment agent has a first functional group and a second functional group in a molecule thereof. The first functional group has stronger positive chargeability than the base particle. The second functional group has stronger hydrophobicity than the base particle.

Mixtures are disclosed containing a plurality of charged pigment particles and one or more charge control agents. At least one of the charge control agents has a chemical structure that includes a cationic head group, such as an ammonium cation or an iminium compound, and a non-ionic, polar functional group, other than an acyclic secondary amide group. The mixtures are useful as dispersions for forming electrophoretic media that may be incorporated into electrophoretic displays. Alternatively, the dispersions may be useful for forming electrophotographic toners and dispersions for other printing applications.

Provided is a toner having a toner particle including a binder resin and a colorant, wherein the colorant includes a compound represented by Formula (1) below, a crystal of the compound in the toner particle has a diffraction peak with a full width at half maximum of at least 0.400 and not more than 0.440 in a range of a diffraction angle 2 of at least 5.0 and not more than 6.0 in an X-ray diffraction spectrum using CuK rays,

##STR00001## in Formula (1), X.sub.1 and X.sub.2 each independently represent a hydrogen atom, a chlorine atom or a methyl group.