| 摘要 |
PURPOSE:To form a toner good in pulverizability, rich in producibility, high in mechanical strength, and good in durability by specifying a mixing ratio of a positively triboelectrifiable resin to an org. carboxylic acid, and a ratio of a triboelectrification amt. of positively triboelectrifiable resin to that of a low triboelectrifiable resin. CONSTITUTION:An electrostatic charge developing toner contains the resin having a positively triboelectrifiable characteristic, the org. carboxylic acid, preferably, such as lauric acid, in an amt. of 0.1-5pts.wt. per 100pts.wt. of the former resin, and the low triboelectrifiable resin having triboelectrifiable amt. T2(muc/g), ¦T2¦<=1/5¦T1¦, where T1 is that of the former resin. A neutral resin, preferably, such as polystyrene, is used, preferably, in an amt. of 5-70wt% of the total resin. |
