| 摘要 |
PURPOSE:To improve copying quality and to decrease toner splashing by incorporating a carbon black, aniline black and binder resin into the toner. CONSTITUTION:The toner contains the carbon black, the aniline black and the binder resin. There are usually correlations in the amt. of the carbon black to be added, image density and toner splashing when only the carbon black is used as a coloring agent. The image density increases but the toner splashing increases when the amt. of the carbon black to be added is increased. On the other hand, the toner splashing arise hardly but the coloring power is weak and, therefore, the image density is insufficient when only the aniline black is used. The relative content of the carbon black is, therefore, lowered by making combination use of the aniline black as the coloring agent. The toner splashing is decreased in this way and the deterioration in the image is substantially prevented in spite of the repetitive use. The good images which are high in density and are less stained are thus obtd. at all times. |
