Process for production of electrophotographic toner
AssigneeKao Corporation
InventorsShoichi Murata, Eiji Shirai, Hiroshi Mizuhata, Manabu Suzuki
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AssigneeKao Corporation
InventorsShoichi Murata, Eiji Shirai, Hiroshi Mizuhata, Manabu Suzuki
Estimating the term…
A method for producing an electrophotographic toner, including (1) a step of preparing a thermally treated resin particle dispersion by retaining, for one hour or longer at a temperature satisfying a specific formula, a dispersion of resin particles (A) having a volume median particle size of 0.02 μm to 2 μm and containing a resin containing a crystalline polyester (a1) in an amount of 1 to 50 wt % and an amorphous polyester (b1); (2) a step of preparing an aggregated particle dispersion by aggregating thermally treated resin particles contained in the thermally treated resin particle dispersion prepared through step 1; (2a) a step of preparing resin-fine-particle-attached aggregated particles by adding, to the aggregated particle dispersion prepared through step 2, a dispersion of resin fine particles (B) containing an amorphous polyester (b2) in an amount of 70 wt % or more; and (3) a step of unifying the resin-fine-particle-attached aggregated particles prepared through step 2a.
A method for producing an electrophotographic toner comprising:
Dependencies are inferred from the claim text.