Abstract: A toner including a core including at least a colorant, a release agent and a first binder resin; and a shell located overlying the core and including at least a second binder resin, wherein the first binder resin includes a polyester resin including a unit obtained from a diol selected from the group consisting of aliphatic diols and alicyclic diols, and the second binder resin includes a vinyl copolymer, and wherein a weight ratio (S/C) of the shell (S) to the core (C) is from 0.05 to 0.5 and the toner has a volume average particle diameter of from 3 to 8 ?m.

Abstract: The present invention aims at providing non-magnetic toner which is excellent in fixing property and charge property and capable of inhibiting occurrence of scumming, as well as an image forming apparatus and a process cartridge using the non-magnetic toner. A non-magnetic toner comprising: a toner base particle which comprises a binding resin, and a colorant; and external additives, wherein a surface of the toner base particle contains at least a resin having at least silanol group, and the external additives contain at least particles composed of silicon oxide.

Abstract: A toner is provided including a binder resin and a colorant, wherein the toner has a displacement-load curve in which a maximum compression strength is from 0.65 to 1.0 mN and a slope of a line through an origin point and a first shoulder is not less than 1.1 mN/?m; along with an image forming method, an image forming apparatus, and a process cartridge using the toner.

Abstract: A toner containing a mother toner particle containing at least two kinds of resins having a polyester skeleton, and a coloring agent, and a releasing agent, wherein the mother toner particle has a core and a shell layer thereon, and no peak that derives from magnesium, calcium, or aluminum in the mother toner particle is observed in a qualitative analysis using an X-ray fluorescence measuring instrument.

Abstract: A toner is provided including a binder resin, a colorant, and a release agent, which has a volume average particle diameter (Dv) of from 3 to 9 ?m, and wherein the binder resin and the release agent form a sea-island structure in which the island formed of the release agent is dispersed in the sea formed of the binder resin in a cross-sectional image of the toner obtained by a transmission electron microscope (TEM), and the following relationships are satisfied: IB>IA and IB>IC, wherein each of IA, IB, and IC represents an area ratio (%) of the island in an outermost region (A) of the cross-sectional image of the toner, an intermediate region (B) thereof located under the outermost region (A), and an innermost region (C) thereof located under the intermediate region (B); and a method of preparing the toner.

Abstract: To provide a toner containing at least a toner base containing a binder resin and a colorant, and an inorganic fine particle, wherein the inorganic fine particle contains a compound oxide expressed by the following Composition Formula (1): [M1]aSibOc??Composition Formula (1) where “M1” represents a metal element selected from Sr, Mg, Zn, Co, Mn and Ce, “a” and “b” each represents an integer of 1 to 9 and “c” represents an integer of 3 to 9, wherein an average primary particle diameter of the compound oxide is 0.02 ?m to 1.5 ?m, and an average secondary particle diameter of the compound oxide is 0.08 ?m to 3.5 ?m, where the secondary particle is an aggregate of the primary particles.

Abstract: The present invention provides a charge control agent, adapted to control charging ability of resins or compositions containing resins, comprising a copolymer that comprises a polymer block A and a polymer block B, the polymer block A is prepared by copolymerizing a maleimide, which being unsubstituted or substituted for a hydrogen atom of an imide group by an electron-donating group, and styrene or a styrene derivative, and the polymer block B is formed of a polymer of styrene or a styrene derivative.

Abstract: A toner is provided prepared by a wet granulation method, comprising a binder resin and a colorant, wherein the toner adsorbs ammonia (NH3) in an amount of from 70 to 400 ?mol/m2 per unit of specific surface area and carbon dioxide (CO2) in an amount of not greater than 10 ?mol/m2 per unit of specific surface area.

Abstract: A toner including a resin having a polyester skeleton, a coloring agent, a vinyl based copolymer resin, and a releasing agent, wherein the toner is manufactured by dissolving or dispersing a resin including the resin having a polyester skeleton and a mixture of the vinyl based copolymer resin and the releasing agent in an organic solvent to obtain a lysate and/or a dispersion material, dispersing the lysate and/or the dispersion material in an aqueous medium to obtain a liquid dispersion and removing the organic solvent from the liquid dispersion.

Abstract: A toner including a binder resin, a colorant and a release agent, and satisfying the following relationships (1) and (2): 1.0?FT120/FT160?1.5??(1) wherein FT120 is a maximum tensile strength (N) when a recording medium having the toner unfixed on is vertically separated from the surface of a substrate having a temperature of 120° C. at a constant speed after pressed thereto at a pressure of 100 kPa, and FT160 is same except that the substrate has a temperature of 160° C.; 1.0?FP100/FP200?1.5??(2) wherein FP100 is a maximum tensile strength (N) when a recording medium having the toner unfixed on is vertically separated from the surface of a substrate having a temperature of 160° C. at a constant speed after pressed thereto at a pressure of 100 kPa, and FP200 is same except that the pressure is 200 kPa.

Abstract: A toner manufactured by a method including the steps of dissolving or dispersing toner components comprising a binder resin, a colorant, and an encapsulated plasticizer to prepare an oily toner components liquid, and emulsifying or dispersing the oily toner components liquid in an aqueous medium to prepare the toner.

Abstract: A toner kit including a color toner containing a first binder resin and a coloring agent; transparent and colorless resin particulates comprising a second binder resin, wherein the half effusion temperature of the color toner and the half effusion temperature of the transparent and colorless resin particulates measured by a flow tester satisfy the following relationship: (the half effusion temperature of the color toner measured by the flow tester)?(the half effusion temperature of the transparent and colorless particulates measured by the flow tester)>30° C.

Abstract: An image formation method including developing a latent image on an image bearing member with a toner containing a coloring agent and a first binder resin; transferring the toner to a recording medium; transferring a fixing helping particle containing a second binder resin to the recording medium; and fixing the toner and the fixing helping particle on the recording medium, wherein the toner and the fixing helping particle satisfy the following relationships: 6 ?m?Dvc?3 ?m Dvc>10×Dvt Sc<St. In the relationships, Dvc represents the volume average particle diameter of the toner, Dvt represents the volume average particle diameter of the fixing helping particle, Sc represents the average circularity of the toner and St represents the average particle diameter of the fixing helping particle.

Abstract: A toner containing a binder resin including a unit of a polyester resin I having an amino group and another unit of a polyester resin II having an anion functional group and a coloring agent, wherein the toner is manufactured by dissolving or dispersing the polyester resin I, the polyester resin II and the coloring agent in an organic solvent to obtain an oil phase, dispersing the oil phase in an aqueous medium and removing the organic solvent followed by drying.

Abstract: A gloss control particle is provided that is configured to form a transparent and colorless gloss control layer on a colored toner image which is to be fixed on a recording medium upon application of heat, wherein the gloss control particle contains a binder resin and a softening agent configured to soften the binder resin upon application of heat, along with a developer containing the gloss control particle and an image forming method using the developer containing the gloss control particle.

Abstract: Provision of a toner for developing a latent electrostatic image, including a colorant, a binder resin, and a releasing agent, where molecular weight distribution of THF-soluble components of the toner measured by a GPC is in the range of Mw 4,000 to Mw 11,000, and a peak area of low molecular weight components having a molecular weight of 200 to 500 is 3.2% or less based on the whole peak area.

Abstract: A toner including a binder resin, a coloring agent, an infrared absorbing agent having at least a maximum absorption wavelength in a wavelength range of from 700 to 1,100 nm, and a fixed surface protective agent, wherein, for a cross section observation of the toner, the infrared absorbing agent which exists in the vicinity of the fixed surface protective agent occupies at least 60% by area based on the entire area of the infrared absorbing agent and is present inside the toner closer to the surface of the toner than to the center area thereof.

Abstract: A toner is provided including a colorant; a resin composition (A) comprising at least one binder resin and a hydrocarbon wax having a melting point of 70-90° C. in an amount of from 6 to 30% by weight based on total weight of resin composition (A), and having a softening point (T1/2(A)) of from 120 to 150° C.; and a resin composition (B) having a softening point (T1/2 (B)) of from 100 to 130° C., wherein a weight ratio of the resin composition (A) to the resin composition (B) is from 10/90 to 45/55, and the following relationship is satisfied: T1/2(A)?T1/2(B)+3; and the use of the toner in an image forming method, an image forming apparatus, and a process cartridge.

Abstract: A toner having a core containing a colorant, a release agent and a binder resin (A), and a shell containing a binder resin (B), the shell overlying the core, wherein the binder resin (A) contains a resin having a polyester skeleton, the binder resin (B) contains a vinyl copolymer resin, and a weight ratio of the shell to the core is from 0.05 to 0.5, and wherein the toner has a volume average particle diameter of from 3 to 8 ?m; a toner manufacturing method of such the toner can be used in an image forming apparatus and in a process cartridge.

Abstract: A toner including a colorant, a polyester (I), and an urea-modified polyester is provided. The urea-modified polyester is a reaction product of an isocyanate-modified polyester with an amine. The isocyanate-modified polyester is obtained by modifying a polyester (II) with an isocyanate. The polyester (II) has specific number average molecular weight (Mn) and hydroxyl value [OHV]. The toner can be manufactured by dispersing or emulsifying a toner constituent liquid including the colorant, the polyester (I), and the isocyanate-modified polyester, in an aqueous medium. The toner can be used for a one-component developing device.