Process for producing toner for electrostatic charge image development toner for electrostatic charge image development
AssigneeMitsubishi Chemical Corporation
InventorsMasatoshi Maruyama, Hiroya Kodama, Masaya Oota, Shiho Sano
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Abstract
To provide a process for efficiently producing a toner for developing an electrostatic charge image, which is scarcely susceptible to aggregation of the toner and free from blocking during the storage or from soiling the image forming apparatus and which is excellent in image characteristics. A process for producing a toner for developing an electrostatic charge image, characterized by supplying a monomer into a dispersion containing wax and a polymerizable monomer having a C8-100 hydrocarbon group, carrying out the polymerization, followed by flocculation treatment.
Claims11
A toner for developing an electrostatic charge image, which comprises a binder resin and wax, wherein the binder resin comprises a copolymer prepared by using as a starting material, a (meth)acrylate monomer having a C8-100 linear hydrocarbon group, and the content of the (meth)acrylate monomer having a C8-100 linear hydrocarbon group is less than 2 wt % of the entire binder resin and—wherein the number of wax domains satisfying the following formula (1) among wax domains observed by its TEM analysis, is at least 85.0% of the total:
- (1) 0<A<500 (A:
- equiareal circle diameter (nm))
- wherein said copolymer is present at the interface between the binder resin and the wax, and
- wherein said toner is produced by a process comprising supplying a monomer into an aqueous dispersion containing wax and a (meth)acrylate having a C8-100 linear hydrocarbon group, carrying out the polymerization, followed by flocculation treatment.
Dependencies are inferred from the claim text.