| 摘要 |
<p>PROBLEM TO BE SOLVED: To obtain a toner capable of preventing its filming on the surface of a photoreceptor, etc., and capable of forming a high density and high quality image having slight surface fog fixed with satisfactory fixability. SOLUTION: A bonding resin whose mol.wt. distribution has at least one peak in the high mol.wt. region (HP) of 20,000-1,500,000 and at least one peak in the low mol.wt. region (LP) of 2,000-20,000 when the mol.wt. is measured by GPC(gel permeation chromatography) is used. In the distribution, the ratio of HP:LP is 25:75 to 50:50 and the melt index of the bonding resin is 4-40g/10min. A specified amt. of a wax dispersing aid represented by the formula is incorporated into the bonding resin and wax is dispersed in the resin so as to attain a particle size distribution including <=30 number% particles each having <=0.1μm particle diameter, >=70number% particles each having 0.1-3.0μm particle diameter and <=0.1number% particles each having >=3.0μm particle diameter.</p> |
