| 摘要 |
PURPOSE:To obtain the toner which has an excellent offset resistance property in a wide fixing temp. range and has good fixability and blocking resistance by compounding a specific resin having a residual carboxyl group, a specific resin having a glycidyl group or beta-methyl glycidyl group and a resin consisting of a copolymer of a styrene monomer and a (meth)acrylate monomer at specific ratios. CONSTITUTION:The resin compsn. for the toner contains the resin (A) which is obtd. by bringing into reaction a polyvalent metal compd. into reaction with the copolymer of the styrene monomer, the (meth)acrylate monomer and the vinyl monomer having the carboxyl group and has the residual carboxyl group, the resin (B) consisting of the copolymer of the vinyl monomer having the glycidyl group or beta-glycidyl group and other vinyl monomers and the resin (C) consisting of the copolymer of the styrene monomer and the (meth)acrylate monomer as its essential resin components. The respective resins are so compounded that the max. peak mol. wt. of the mol. wt. distribution of the mixture composed of the above-mentioned resin (A) and resin (B) attains 3,000 to 80,000 and the max. peak mol. wt. of the mol. wt. distribution of the resin (C) attains 100,000 to 200,000. |
