TONER
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Accused Products
Abstract
Provided is a toner that has excellent low-temperature fixability, hot offset resistance, high image glossiness and fixing wraparound resistance, as well as high durable stability. The toner includes toner particles that contain a binder resin, a colorant and a wax, and fine inorganic particles on a surface of the toner particles, wherein the binder resin contains a polyester resin A and a styrene resin B, and a content ratio A/B of the polyester resin A and the styrene resin B is 85/15 or more and 98/2 or less based on mass, the styrene resin B has a weight average molecular weight Mw of a tetrahydrofuran soluble component of 2,000 or more and 5,000 or less, and the toner has been subjected to a hot-air surface treatment.
21 Citations
17 Claims
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1-8. -8. (canceled)
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9. A method of producing a toner comprising toner particles and fine inorganic particles on a surface of the toner particles, the method comprising:
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mixing a raw material which contains a binder resin, a colorant, and a wax, to obtain a mixed material; melt kneading the mixed material to obtain a resin composition; cooling the resin composition to obtain a cooled product; pulverizing the cooled product to obtain a pulverized product; classifying the pulverized product to obtain a classified product; and treating a surface of the classified product by hot air to obtain the toner particles, wherein; the binder resin contains a polyester resin A and a styrene resin B; a content ratio AB of the polyester resin A and the styrene resin B is 85/15 or more and 98/2 or less based on mass; the styrene resin B is obtained by polymerization of monomers consisting of a styrene and a n-butyl acrylate; and a tetrahydrofuran soluble component of the styrene resin B contained in the binder resin has a weight average molecular weight Mw of 2,000 or more and 5,000 or less. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17)
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Specification