| 摘要 |
<p>PURPOSE:To improve offset property and to prevent production of charged toner in reverse polarity in heat roll fixing. CONSTITUTION:This developer is obtd. by adding fine particles of 0.5-7.0mum average particle size to toner particles containing at least a resin, coloring agent, and dispersed particles of charge controlling agent. The average particle size of the charge controlling agent particles is 0.1-5mum, and the amt. of the charge controlling agent on the surface of toner particles is 0.5-5.0 particles % of the whole particle number.</p> |
