| 摘要 |
<p>A toner for electrostatic image development which is obtained by suspension-polymerizing, in an aqueous medium containing a dispersant, a composition comprising a colorant, a polymerizable monomer, and a charge control agent, characterized in that (a) the dispersant is a cationic inorganic dispersant and that (b) the charge control agent is a copolymer which comprises vinylaromatic hydrocarbon units, (meth)acrylate units, and (meth)acrylate units containing a quaternary ammonium salt group and has a weight-average molecular weight as determined by gel permeation chromatography with tetrahydrofuran of 25,000 to 40,000 in terms of polystyrene and in which the content of the (meth)acrylate units containing a quaternary ammonium salt group is 1 to 15 wt.%.</p> |
