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US 2022/0197165 A1Published application
Toner, resin particles, developer, toner storage unit, image forming apparatus, method for producing toner, and image forming method
AssigneeRicoh Company, Ltd.
InventorsTomomi Harashima, Junichi Watanabe, Hiroshi Yamashita, Shinya Nakayama
Life of this patent
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Abstract
Provided is a toner including toner base particles. Each toner base particle includes a crosslinked component. The crosslinked component includes a nonlinear polymer having 3 or more branches, terminals of which are metal ion crosslinked, and a glass transition temperature Tg of the nonlinear polymer as measured by differential scanning calorimetry is −60° C. or higher but lower than 0° C.
Claims14
A toner comprising
- toner base particles, each toner base particle including
- a crosslinked component,
- wherein the crosslinked component includes a nonlinear polymer having 3 or more branches, terminals of which are metal ion crosslinked, and
- a glass transition temperature Tg of the nonlinear polymer as measured by differential scanning calorimetry is −60° C. or higher but lower than 0° C.
1 more element
A toner comprising
- toner base particles, each toner base particles including
- a crosslinked component,
- wherein the crosslinked component includes a binder resin, and the binder resin includes a tetrahydrofuran (THF) insoluble component,
- the THF insoluble component includes a nonlinear polymer having 3 or more branches, and metal ions, and
- a glass transition temperature Tg of the THF insoluble component as measured by differential scanning calorimetry is −60° C. or higher but lower than 0° C.
2 more elements
Resin particles each comprising
- a crosslinked component,
- wherein the crosslinked component includes a binder resin, and the binder resin includes a tetrahydrofuran (THF) insoluble component,
- the THF insoluble component includes a nonlinear polymer having 3 or more branches, and metal ions, and
- a glass transition temperature Tg of the THF insoluble component as measured by differential scanning calorimetry is −60° C. or higher but lower than 0° C.
1 more element
Dependencies are inferred from the claim text.