Provided are a toner, and a developing agent container, an image forming unit and an image forming apparatus including the toner. The toner includes a toner particle. The toner particle includes at least one brilliant pigment particle, binder resin containing the brilliant pigment particle, and a parting agent dispersed in the binder resin, wherein a hydrophobicity degree of the brilliant pigment particle is in a range from 61.2 to 92.7.

Provided is a toner comprising a toner particle including a toner base particle and fine particles present on a surface of the toner base particle, wherein each of the fine particles includes a core fine particle and a condensate of at least one organosilicon compound selected from the group consisting of organosilicon compounds represented by specific structural formulas, the condensate coating the surface of the core fine particle, and in a wettability test of the toner with respect to a methanol/water mixed solvent, a methanol concentration, when a transmittance of light having a wavelength of 780 nm is 50%, is 5.0 to 20.0% by volume: ##STR00001## in above Formulas, each of R.sup.a, R.sup.b and R.sup.c independently represents an alkyl group, an alkenyl group, an acetoxy group, an acyl group, an aryl group, or a methacryloxyalkyl group, R.sup.1 to R.sup.5 each independently represents a halogen atom or an alkoxy group.

An electrostatic charge image developing toner includes a toner particle; a strontium titanate particle that is externally added to the toner particle and that is doped with a metal element having an electronegativity of 1.3 or less; and a silica particle that is externally added to the toner particle, in which in a case where a detected peak intensity of a metal element having an electronegativity of 1.3 or less is Me-R, a detected peak intensity of strontium is SrR, a detected peak intensity of silicon is SiR, and an element proportion of strontium is SrP, Conditions (1) to (3) are satisfied,
0.08 kcpsMe-R10 kcps,(1)
0.1%SrP3.0%, and(2)
0.15SrR/SiR12.(3)

A positively chargeable toner includes a plurality of toner particles. The toner particles each include a toner mother particle and an external additive. The toner mother particle includes a toner core containing a binder resin and a shell layer covering a surface of the toner core. The external additive includes a plurality of silica particles. The silica particles are each present on a surface of the shell layer and include a silica base having a surface treated with a surface treatment agent. The surface treatment agent includes a first treatment agent having a carboxyl group in a molecule thereof. The toner core and each of the silica particles is bonded to each other through a specific covalent bond. An amount of ring-unopened oxazoline groups included in 1 g of the positively chargeable toner as measured by gas chromatography-mass spectrometry is at least 0.10 mol and no greater than 100 mol.

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 higher than 120 C.; and a polyester resin (B) different from the polyester resin (A), wherein the binder resin for toner has a pulverizability index of 25 or more.

A toner includes an external additive particle that is a complex oxide containing a titanium dioxide (TiO.sub.2) and a silicon dioxide (SiO.sub.2). A detection amount of titanium (Ti) detected through an elementary analysis based on energy-dispersive X-ray spectrometry is equal to or higher than about 0.590 percent by weight and equal to or lower than about 0.967 percent by weight.

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.

The problem is solved by a printing toner containing sublimable dye including: toner base particles at least including a binder resin, a disperse dye, and a mold release agent; and an external additive externally added to surfaces of the toner base particles, in which the toner base particles include the binder resin in a proportion of 50% to 95% by mass in the toner base particles, and include, as the binder resin, an aliphatic polyester-based resin in a proportion of 20% to 70% by mass in the toner base particles; and the disperse dye is a sublimable dye.

An external toner additive having a resin fine particle containing a crystalline resin and an inorganic fine particle embedded in the resin fine particle, wherein part of the inorganic fine particle is exposed on the surface of the resin fine particle, and in differential scanning calorimetry of the external toner additive, the maximum endothermic peak temperature T1 ( C.) during a first temperature increase and the maximum exothermic peak temperature T2 ( C.) during a first temperature decrease satisfy the formulae (1) to (3) below, with measurement performed between 40 C. and 150 C. at a rate of increase of 10 C./min during the first temperature increase and between 150 C. and 40 C. at a rate of decrease in temperature of 10 C./min during the first temperature decrease:

T1-T240.0(1)

50.0T1120.0(2)

10.0T280.0(3).

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.