| 摘要 |
PURPOSE:To provide a developing material which has a good release property from a heating roll at a high temp., offsets hardly in high-speed copying, has a smaller tendencty to aggregation and has the higher resistance to folding after fixing by incorporating a specific modified polyolefin wax, binder resin and coloring agent into said material. CONSTITUTION:The modified PO wax formed by grafting 2-30pts.wt. unsatd. carboxylate to 98-70pts.wt. polyolefin (PO) wax having 0.007-0.6dl/g intrinsic viscosity (100pts.wt.total of both), binder resin and coloring agent are incorporated into the developing material. The heat fixable developing material constituted in such a manner has the excellent release property from the heating roll, etc. even at a high temp. and therefore said material does not offset even if the fixing speed is increased by increasing the temp. of the heating roll. The material has the smaller tendency to aggregation, the excellent developing characteristic and the good resistance to folding after fixing. |
