| 摘要 |
<p>Finely dispersed toner with a mean particle size 30 mu is mixed with a small amount of a stable, tough non-melting polymeric additive which has a lower particle size. Pref. the polymeric additive is more electro-negative than sulphur and has a critical surface tension below 33 dyn/cm, e.g. polyvinylidene fluoride.</p> |
