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US 11,086,242 B2Granted
Toner and method for producing toner
AssigneeCanon Kabushiki Kaisha
InventorsNaoya Isono, Keiichiro Tsubaki, Yasuaki Murai
Life of this patent
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Abstract
The toner has a toner particle that contains a binder resin, wherein the binder resin contains a styrene-acrylic resin that has a structure derived from a crosslinking agent, the binder resin includes tetrahydrofuran-insoluble matter in an amount of from 5 mass % to 60 mass % of the binder resin, and the crosslinking agent contains a polymeric compound provided by an addition reaction at least between a particular multifunctional (meth)acrylate compound and a particular polyvalent mercapto compound.
Claims6
A toner, comprising:
- a toner particle that contains a hinder resin, the binder resin containing a styrene-acrylic resin having a structure formed by copolymerizing a crosslinking agent with polymerizable monomers that form the styrene-acrylic resin;
- the crosslinking agent containing a polymeric compound provided by an addition reaction between at least a compound represented by formula (1) and a compound represented by formula (2)
- where R1 represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms;
- L1 represents an m-valent linear or branched aliphatic hydrocarbon group optionally having a hydroxy group, or an ether bond-containing m-valent linear or branched aliphatic hydrocarbon group optionally having a hydroxy group;
- m is an integer from 3 to 6;
- L2 represents an alkylene group;
- L3 represents an n-valent linear or branched aliphatic hydrocarbon group optionally having a hydroxy group, or an ether bond-containing n-valent linear or branched aliphatic hydrocarbon group optionally having a hydroxy group;
- and n is an integer from 3 to 6, wherein
- the binder resin includes tetrahydrofuran-insoluble matter in an amount of 5 to 60 mass % of the binder resin.
6 more elements
Dependencies are inferred from the claim text.