Toner
AssigneeCanon Kabushiki Kaisha
InventorsMizuho HANATANI, Takeshi HASHIMOTO, Hayato IDA
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Abstract
Toner that improves a charging rise speed under a high-humidity environment while maintaining an improvement in image quality due to a reduction in a static adhesion force under a low-humidity environment is provided. The toner includes toner particles containing an amorphous polyester, and barium titanate particles present on a surface of the toner particles, wherein the amorphous polyester includes a carboxy group. The barium titanate particles include a barium titanate core and a fatty acid having carbon number 6 or more firmly fixed to a surface of the barium titanate core. A hydroxy group amount of the barium titanate particles measured using a titration method is 15 μmol/g or more and 1300 μmol/g or less.
Claims11
Toner comprising:
- toner particles containing an amorphous polyester;
- and
- barium titanate particles present on a surface of the toner particles,
- wherein the amorphous polyester includes a carboxy group,
- wherein (i) the barium titanate particles include a barium titanate core and a fatty acid having carbon number 6 or more firmly fixed to a surface of the barium titanate core, and
- wherein (ii) a hydroxy group amount of the barium titanate particles measured using a titration method is 15 μmol/g or more and 1300 μmol/g or less.
Dependencies are inferred from the claim text.