| 摘要 |
<p>PURPOSE: To obtain a toner not causing fogging, scattering, filming, etc., and contg. an electric charge controlling agent having satisfactory dispersibility. CONSTITUTION: This toner consists of at least a bonding resin, a colorant and an electric charge controlling agent. The controlling agent is contained by 3-10 pts. wt. per 100 pts. wt. of the bonding resin and the dispersion index of the controlling agent represented by A/S [A is the amt. (wt.%) of the controlling agent exposed to the surface of this toner and S is the surface area (m<2> /g) of this toner] is 1.5-3.5.</p> |
