Patent ID: 8293447
Filing Date: 2012-10-23
Classification: G03G

Abstract:
1. A process for manufacturing a toner, comprising: (a) preparing a carboxyl group-containing vinyl resin by initially synthesizing a vinyl resin and thereafter, adding a monomer containing a carboxyl group to the vinyl resin, thereby synthesizing the carboxyl group-containing vinyl resin; (b) preparing a glycidyl group-containing vinyl resin by initially synthesizing a vinyl resin and thereafter, adding a monomer containing a glycidyl group to the vinyl resin, thereby synthesizing the glycidyl group-containing vinyl resin; (c) reacting the carboxyl group-containing vinyl resin with the glycidyl group-containing vinyl resin to obtain a styrene/acryl resin; (d) melt-kneading the styrene/acryl resin and a colorant; (e) pulverizing the resulting kneaded product; and (g) classifying the resulting pulverized product, wherein: (i) an obtained toner has a binder resin and a colorant, (ii) the binder resin in the toner contains 60% by mass or more of the styrene/acryl resin; (iii) the binder resin in the toner contains a THF-insoluble fraction A which is an extraction residue obtained by carrying out Soxhlet extraction with tetrahydrofuran (THF) for 16 hours; (iv) the THF-insoluble fraction A contains a TOL-insoluble fraction B which is an extraction residue obtained by carrying out Soxhlet extraction with toluene (TOL) for 16 hours; (v) a mass ratio (B/A) between the THF-insoluble fraction A and the TOL-insoluble fraction B is in a range of 0.1≦B/A≦0.5.