| abstract |
In a developer containing as toner at least a resin component and a coloring agent, when (A) a styrene-acrylic copolymer and (B) a polyester resin is used as the resin component and making the toner to have an electric resistance of 1013 OMEGA .cm or higher and a triboelectrification quantity of an absolute value of 5 mu C/g or more, the resulting developer shows no offset phenomenon and gives excellent image quantity, transfer efficiency and good productivity. |