| 摘要 |
PURPOSE:To obtain the title toner having sufficient fixing capacity, offset resistance in a wide range, high preservation stability, and providing superior density of line drawing and density of black solid part by combining a specified toner with a nonspherical electroconductive carrier. CONSTITUTION:In order to obtain a two component developer for electrostatic charge image by combining a toner with a carrier, the toner is one contg. an alpha,beta-unsatd. ethylenic monomer as constituting unit and contg. a binder resin having 40-80 deg.C glass transition point (Tg), >=5,000 number average mol.wt. and 10-40 ratio of the weight average mol.wt./number average mol.wt., and having 10-15mum mean particle size. The carrier is a nonspherical electroconductive carrier having <=10<10>ohm.cm specific resistance and >=200cm<2>/g specific surface area. Thus, the title toner having high fixing capacity at low temp., high offset resistance, high intensity of line drawing and black solid part, as well as high charge stability and durability is obtd. |
