Toner
AssigneeCanon Kabushiki Kaisha
InventorsKoji Inaba, Kazumi Yoshizaki, Yasushi Katsuta
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Abstract
To achieve improvements in developing performance, transferring performance, and fixing performance, a toner has a glass transition temperature (TgA) of 40 to 60° C. and a temperature (P1) of the highest peak of 70 to 120° C.; cyclohexane (CHX) insoluble matter in the tetrahydrofuran (THF) soluble matter of the toner has a glass transition temperature (TgB) of 80 to 120° C.; TgA and TgB satisfy a specific formula; the toner has a viscosity at 100° C. of 5,000 to 30,000 Pa·s; and the cyclohexane (CHX) insoluble matter has an acid value of 5 to 40 mgKOH/g.
Claims21
A toner comprising toner particles each containing at least a binder resin, a wax, and a colorant, wherein:
- the toner has (i) a glass transition temperature (TgA) measured with a differential scanning calorimeter of 40 to 60° C., (ii) a peak temperature (P1) of a highest endothermic peak measured with a differential scanning calorimeter of 70 to 120° C., and (iii) a viscosity at 100° C. measured by a flow tester heating method of 5,000 to 30,000 Pa·s;
- cyclohexane (CHX) insoluble matter in tetrahydrofuran (THF) soluble matter of the toner has (i) a glass transition temperature (TgB) measured with a differential scanning calorimeter of 80 to 120° C. and (ii) an acid value of 5 to 40 mgKOH/g;
- and
- the glass transition temperature (TgA) and the glass transition temperature (TgB) satisfy the following formula (1)
- 25° C.≦(TgB−TgA)≦70° C. Formula (1).
Dependencies are inferred from the claim text.