摘要:
A toner including a binder; a colorant; and a wax, wherein the binder includes a polyester resin; and a reaction product of a polymer having a group capable of reacting with an active hydrogen with a compound having an active hydrogen, wherein the polyester resin includes tetrahydrofuran(THF)-soluble resin components in an amount of from 50 to 85% by weight; and chloroform-insoluble components in an amount of from 0 to 30% by weight, and wherein the toner satisfies the following relationship (1): 5% by weight
摘要:
A toner including toner particles comprising a binder resin; and at least two kinds of particulate resins which are located on at least a surface of the toner particles, wherein the toner satisfies at least one of the following relationships (TgA−TgB)≧20° C., wherein TgA and TgB represent glass transition temperatures (Tg) of a particulate resin (A) having a highest Tg and a particulate resin (B) having a lowest Tg among the at least two kinds of particulate resins, respectively; and 100,000≦Mwc≦6,000,000 and 8,000≦Mwd≦800,000, wherein Mwc and Mwd represent weight average molecular weights (Mw) of a particulate resin (C) having a highest Mw and a particulate resin (D) having a lowest Mw among the at least two kinds of particulate resins, respectively, wherein Mwc>Mwd.
摘要:
A toner for developing an electrostatic image having a good combination of hot offset resistance and low temperature fixability. The toner includes (1) a resin having at least one group that can react with a compound having an active hydrogen in an amount of 2 pieces per molecule of the resin, and a colorant. The toner satisfies the following relationship: 3≦G=R−Rideal≦20, where G represents a ratio of a weight of components other than the colorant and the resin that are insoluble in the organic solvent to total weight of the toner, R represents a weight ratio of components included in the toner that are insoluble in the organic solvent to the total weight of the toner, and Rideal represents an ideal weight ratio of the colorant and the resin, which is calculated from a formula of the toner.
摘要:
A toner manufacturing method is provided including emulsion-polymerizing monomers including an aromatic vinyl monomer, to prepare a particulate resin dispersion; mixing the particulate resin dispersion and a colorant dispersion including a black metallic material, to prepare an aggregation dispersion including aggregated resin particles including the colorant therein; heating the aggregation dispersion to a temperature of not less than a glass transition temperature of the particulate resin to unite each of the aggregated particles to prepare a toner dispersion; and washing the toner dispersion to obtain the toner; a toner manufactured by the above method, and a developer using the toner.
摘要:
There are provided a method for producing a toner which includes: emulsifying and dispersing an oil phase in an aqueous phase so as to form oil droplets; and aggregating the oil droplets so as to associate each other, wherein the oil droplets exhibit non-Newtonian viscosity at the time of aggregating, a method for producing a toner which includes: emulsifying and dispersing an oil phase in an aqueous phase so as to form oil droplets; and aggregating the oil droplets so as to associate each other, wherein the oil droplets exhibit non-Newtonian viscosity at the time of aggregating, as well as a toner obtained by such methods.
摘要:
A toner including toner particles comprising a binder resin; and at least two kinds of particulate resins which are located on at least a surface of the toner particles, wherein the toner satisfies at least one of the following relationships (TgA−TgB)≧20° C., wherein TgA and TgB represent glass transition temperatures (Tg) of a particulate resin (A) having a highest Tg and a particulate resin (B) having a lowest Tg among the at least two kinds of particulate resins, respectively; and 100,000≦Mwc≦6,000,000 and 8,000≦Mwd≦800,000, wherein Mwc and Mwd represent weight average molecular weights (Mw) of a particulate resin (C) having a highest Mw and a particulate resin (D) having a lowest Mw among the at least two kinds of particulate resins, respectively, wherein Mwc>Mwd.
摘要:
A toner is prepared by dissolving and/or dispersing a modified polyester resin in an organic solvent to yield a solution or dispersion, the modified polyester resin being reactive with a compound having an active hydrogen group, mixing the solution or dispersion with an aqueous medium containing resin particles, and subjecting the modified polyester resin to crosslinking and/or elongation in the aqueous medium. The binder resin further includes a crystalline polyester resin in addition to the modified polyester resin.
摘要:
A toner manufacturing method is provided including emulsion-polymerizing monomers including an aromatic vinyl monomer, to prepare a particulate resin dispersion; mixing the particulate resin dispersion and a colorant dispersion including a black metallic material, to prepare an aggregation dispersion including aggregated resin particles including the colorant therein; heating the aggregation dispersion to a temperature of not less than a glass transition temperature of the particulate resin to unite each of the aggregated particles to prepare a toner dispersion; and washing the toner dispersion to obtain the toner; a toner manufactured by the above method, and a developer using the toner.