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US 8,911,924 B2Granted
Toner and method for producing the same
AssigneeRicoh Company, Ltd.
InventorsTomoyuki Sato, Naohiro Watanabe, Tsuyoshi Sugimoto, Shinya Hanatani, Mamoru Hozumi
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Abstract
A toner including base particles each containing a crystalline polyester and a non-crystalline polyester, wherein the toner has a glass transition temperature of 45° C. or higher where the glass transition temperature is determined from a DSC curve of the toner obtained in the first elevation of temperature thereof, and wherein the toner has a temperature width of 8° C. or lower where the temperature width is a temperature width at ⅓ the height of an endothermic peak attributed to the crystalline polyester in the DSC curve.
Claims10
A toner comprising:
- base particles comprising a crystalline polyester and a non-crystalline polyester,
- wherein
- the toner has a glass transition temperature of 45° C. or higher and a temperature width of 8° C. or lower,
- the glass transition temperature is determined from a DSC curve of the toner obtained in a first elevation of temperature thereof, and
- the temperature width is a temperature width at ⅓ of an endothermic peak height in the DSC curve.
2 more elements
Dependencies are inferred from the claim text.