| 摘要 |
<p>PURPOSE:To obtain excellent image reproducibility, flow characteristics, dependency on temp., fixability and sharp meltability and to obtain images of good color tones which are excellent in high reliability and high durability in color images by incorporating specific compds. into the yellow color toner. CONSTITUTION:The compd. expressed by formula is incorporated into this yellow toner. In the formula, X, Y denote chlorine atoms, bromine atoms or iodine atoms. Z denotes hydrogen atoms on 1 to 6C lower alkyl group and lower alkoxy group. A method of melting and kneading a mixture contg. a binder resin, coloring agents, charge control agent, etc., by means of devices, such as heating kneader and two-pieces rolls, capable of mixing under heating, then cooling the mixture to solidify and pulverizing and classifying the mixture by a pulverizing machine of a mechanical type air impingement type, such as ball mill or jet mill, are used as the process for production of this toner. The binder resin is usually used at 99 to 65%, the coloring agents of the compd. expressed by formula at 0.01 to 10 pts.wt. and the charge control agent at 0.1 to 20% (all by weight) in such a case.</p> |
