| 摘要 |
<p>PROBLEM TO BE SOLVED: To obtain such a fine particle toner that an image of high resolution can be obtd. without fog or fixing defects and curling of a paper can be prevented even when a copying machine is used for a long time. SOLUTION: In the toner, a vinyl copolymer having a styrene monomer and/or (meth)acrylate monomer as the structural unit is used as the main binder. At least the vinyl copolymer shows the max. in each range of 3×10<3> to 4×10<4> and 3×10<5> and 8×10<6> mol.wt. of the mol.wt. distribution and the BET specific surface area of the main binder is 0.02 to 0.2m<2> /g.</p> |
