Production method of surface-treated carbon black powder and production method of surface-treated carbon black powder dispersion

摘要

When using for the water black ink for the ink jet printer, the printing density which is superior, printing grade, emission stability and retention stability are shown, the method the finishing carbon black powder dispersing element being produced is offered. Granulation doing the carbon black particulate where cubic measure mean diameter is 100nm - 20 millimicrons with wet method, heating drying, after producing carbon black granulation things such as below hardness 12cN and under pH7, pulverizing processing pulverization ones which pulverization ones where cubic measure mean diameter is 20nm - 20 millimicrons profit, are obtained it is production method of the finishing carbon black powder dispersing element which features that wet it oxidizes processes in water medium.