DEVELOPER
PURPOSE:To obtain the titled developer having improved electric chargeability and fluidity and capable of obtaining a clear image having no fog by sticking very fine powders of silicic acid on the surface of the toner powders, and by setting freely the coarse silicic acid fine powders among the tone...
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| Format: | Patent |
| Sprache: | eng |
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| Zusammenfassung: | PURPOSE:To obtain the titled developer having improved electric chargeability and fluidity and capable of obtaining a clear image having no fog by sticking very fine powders of silicic acid on the surface of the toner powders, and by setting freely the coarse silicic acid fine powders among the toner powders. CONSTITUTION:The fine silicic acid powders are sticked on the surface of the toners, and the coarse silicic acid powders are set freely among the toner powders. The titled developer is obtd. by externally mixing fine silicic acid powders by means of a dry method, followed by externally mixing the fine silicic acid powders by means of a wet method for relatively short period. The usable toner powder is not specified, if the toner treated with a milling step, the encapsulated toner and the toner powder produced by the suspension polymerization are used. Thus, the toner having the improved electric chargeability and fluidity is obtd. |
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