| 摘要 |
<p>PURPOSE: To produce a toner excellent in fixability and image characteristics such as image density and fog by specifying the temp. of the 1st kneading part of a continuous kneader used in a kneading process. CONSTITUTION: When at least a resin and a colorant are blended, mixed, kneaded with a continuous kneader, pulverized and classified to produce a toner compsn., the set temp. Ta( deg.C) of the barrel of the 1st kneading part of the continuous kneader and the flow softening temp. Tm( deg.C) of the resin are regulated so as to satisfy the relation of Ta<=Tm+20. A known resin fit for a toner may be used as the resin and styrene resin, polyester resin or epoxy resin is especially preferably used. The colorant content is made low if it is enough to color the toner so that a visible image can be formed by development.</p> |
