| 摘要 |
PURPOSE:To obtain a toner good in reproduction performance of full colors by mixing epoxy resins different in softening point. CONSTITUTION:The binder resin is a mixture of 10-90pts.wt. of the epoxy resin having a softening point of 85-110 deg.C and 90-10pts.wt. of the epoxy resin having a softening point of 110-150 deg.C. If either of them is used alone, fixing temperature range becomes not suitable for obtaining sufficient fixing, and if the softening point is below 85 deg.C, the storage stability of the toner brings about a problem, and if above 150 deg.C, a problem on pulverizability is caused, thus permitting sufficient light transmittance as the full color toner to be obtained, accordingly, a projection image of sharp tone to be formed, and storage stability of the image to be enhanced. |
