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US 9,541,852 B2Granted
Toner and two-component developer
AssigneeCanon Kabushiki Kaisha
InventorsKosuke Fukudome, Shuhei Moribe, Satoshi Mita, Kunihiko Nakamura, Noriyoshi Umeda, Yoshiaki Shiotari, Naoki Okamoto, Tetsuya Ida
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Abstract
A toner contains toner particles. The toner particles are made of a resin containing an amorphous polyester resin, a releasing agent, an additive and a coloring agent. The additive has a polyester portion and a crystalline acrylic portion that are chemically bound to each other.
Claims6
A toner comprising toner particles made of a resin containing:
- an amorphous polyester resin;
- a releasing agent;
- an additive and
- a coloring agent,
- wherein:
- the additive comprises a resin having a polyester portion and a crystalline acrylic portion that are chemically bound to each other,
- the crystalline acrylic portion has a partial structure expressed by the following chemical formula:
- R represents a hydrocarbon group having a carbon number of 18 to 30, and X represents hydrogen or a methyl group, and
- 95% by mole or more of all structural units of the crystalline acrylic portion are structural units derived from only one of acrylic and methacrylic esters.
6 more elements
Dependencies are inferred from the claim text.