Toner

摘要

Provided is a toner exhibiting satisfactory fixability even in high-speed fixing process involving a double-sided printing mechanism, keeping stable toner image even after a conveyance step, and doesn't cause curling to a fixing roller even in thin paper. In a toner including toner particles, each of which contains polyester resins A and B, a coloring agent, and a resin composition C, the resin A includes a crystal nucleating agent bonded to a polyester molecular chain including a moiety capable of forming a crystalline structure. The resin B doesn't include a moiety capable of forming a crystalline structure. The composition C is obtained by copolymerizing a vinyl-based resin component with a polyolefin resin component. SP values the resin A, the resin B, the agent, the polyolefin component, and the vinyl-based component satisfy the particular relationships.

主权项

1. A toner, comprising toner particles, each of which contains a polyester resin A, a polyester resin B, a coloring agent, and a resin composition C, wherein:
(1) the polyester resin A comprises a polyester part including a moiety capable of forming a crystalline structure and a crystal nucleating agent part, the crystal nucleating agent part being bonded to an end of the polyester part; (2) the polyester resin B comprises a resin free of a moiety capable of forming a crystalline structure; and (3) the resin composition C comprises a resin composition including a vinyl-based resin component and a polyolefin resin component bonded to each other, and wherein Sa, Sb, Sc, Sd, and Se satisfy the following relationships:
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