Encapsulated toner for heat-and-pressure fixing and method for producing the same
AssigneeKao Corporation
InventorsKanji Yoshimura, Yukiya Sato
Life of this patent
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Abstract
A method for producing an encapsulated toner for heat-and-pressure fixing including the step of forming a heat-fusible core material containing at least a thermoplastic resin and a shell, the shell being formed so as to coat surfaces of the heat-fusible core material with an amorphous polyester by in situ polymerization. In this method, a pH of a suspension during polymerization is adjusted to a range of 9 to 13, and an acid value of the amorphous polyester is from 0.1 to 15 KOH mg/g.
Claims3
A method for producing an encapsulated toner for heat-and-pressure fixing comprising the step of forming a heat-fusible core material containing at least a thermoplastic resin and a shell, said shell being formed so as to coat surfaces of the heat-fusible core material with an amorphous polyester by in situ polymerization, wherein a pH of a suspension during polymerization is adjusted to a range of 9 to 13, and wherein an acid value of the amorphous polyester is from 0.1 to 3 KOH mg/g.
An encapsulated toner for heat-and-pressure fixing comprising a heat-fusible core material containing at least a thermoplastic resin and a shell formed so as to coat surfaces of the heat-fusible core material with an amorphous polyester by in situ polymerization, wherein an acid value of the amorphous polyester is 0.1 to 3 KOH m/g.
Dependencies are inferred from the claim text.