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US 9,665,023 B2Granted
Toner and two-component developer
AssigneeCanon Kabushiki Kaisha
InventorsKentaro Kamae, Ryuichiro Matsuo, Koh Ishigami, Masaharu Miura, Masayuki Hama, Hiroaki Kawakami
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Abstract
Provided is a toner, including toner particles each containing a binder resin containing a polyester α as a main component, a colorant, a wax, and a crystalline polyester, in which: the polyester α has a polyhydric alcohol unit and a polyvalent carboxylic acid unit; and the polyester α has, as the polyhydric alcohol unit, a polyhydric alcohol unit N derived from an alkylene oxide adduct of a novolac type phenol resin.
Claims6
A toner comprising toner particles each comprising:
- a binder resin containing a polyester α as a main component thereof, said polyester α comprising a polyvalent carboxylic acid unit and a polyhydric alcohol unit comprising a polyhydric alcohol unit N derived from an alkylene oxide adduct of a novolac type phenol resin;
- a colorant;
- a wax;
- and
- a crystalline polyester obtained by subjecting a monomer composition to a condensation polymerization reaction, the monomer composition comprising (i) a monovalent carboxylic acid monomer, (ii) an aliphatic diol having 2 to 22 carbon atoms, and (iii) an aliphatic dicarboxylic acid having 2 to 22 carbon atoms, wherein
- the polyester α comprises 0.1 to 3.0 mol % of the polyhydric alcohol unit N with respect to a total number of moles of the polyhydric alcohol unit.
3 more elements
Dependencies are inferred from the claim text.