| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a full-color toner compsn. which shows good color reproducibility and which gives excellent image stability without changes in the hue when a full-color image is exposed to light. SOLUTION: This toner compsn. consists of at least a binder resin and a coloring agent, and the binder resin consists of a polyester resin having 2500 to 4500 number average mol.wt., 7000 to 30000 weight average mol.wt., 95 to 120 deg.C softening point and 60 to 75 deg.C glass transition temp. As for the coloring agent, C.I.Pigment Red 122 and C.I.Pigment Red 57:1 are used for the magenta toner, C.I.Pigment Blue 15:3 is used for the cyan toner, and C.I.Pigment Yellow 180 is used for the yellow toner. The coloring agent of the toner preferably contains a product by flashing treatment essentially comprising the polyester resin above described and the color pigments above described, or high-density pigmet pellets.</p> |
