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US 2011/0300480 A1Published application
Toner Compositions
AssigneeXerox Corporation
InventorsKe Zhou, Karen Ann Moffat, Richard P.N. Veregin, Cuong Vong
Life of this patent
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Abstract
The present disclosure relates to a toner including a core comprising at least one amorphous resin, at least one crystalline resin and one or more optional ingredients such as optional colorants, optional waxes, gels, and combinations thereof. The toner also includes a shell having an environmentally friendly charge control agent co-emulsified with at least one amorphous shell resin.
Claims20
An emulsion aggregation toner comprising:
- a core comprising at least one amorphous resin, at least one crystalline resin, and one or more optional ingredients selected from the group consisting of colorants, waxes, styrene/acrylate gels, and combinations thereof;
- and
- a shell comprising at least one amorphous shell resin co-emulsified with one or more polymeric charge control agents.
An emulsion aggregation toner comprising:
- a core comprising at least one amorphous resin, at least one crystalline resin and one or more optional ingredients selected from the group consisting of colorants, waxes, styrene/acrylate gels, and combinations thereof;
- and
- a shell comprising at least one amorphous resin co-emulsified with a charge control agent selected from the group consisting of
- wherein n is from about 1 to about 1000,
- wherein x is 0.4 to 0.8, y is 0.2 to 0.6, R1,R2, and R3 are each independently hydrogen or an alkyl, and R4 and R5 are each independently an alkyl, and
- a magnesium-aluminum hydroxide carbonate selected from the group consisting of
- Mg4Al2(OH)12(CO3)bZa.nH2O, and
- Mg6Al2(OH)16(CO3)bZa.nH2O
- where b is from 0 to 1, n is from zero to 10, Z is a combination of anions of sebacic acid with one or more C12-C44 fatty acids or a partly fluorinated or perflourinated sulfosuccinic acid (C6-C22)alkyl monoester, and the number a is such that Z accounts for from 1% to 45% by weight, based on the total weight of the compound, and where the ratio between sebacic acid and the fatty acid or the sulfosuccinic monoester is from 1:50 to 5:1, and
- combinations thereof.
7 more elements
A process comprising:
- contacting at least one amorphous resin with at least one crystalline resin and at least one styrene/acrylate gel in a mixture;
- aggregating the mixture to form core particles;
- contacting the core particles with an emulsion comprising an amorphous resin in combination with a charge control agent comprising at least one polymeric charge control agent to form a shell over the particles;
- and
- recovering the toner particles.
2 more elements
Dependencies are inferred from the claim text.