| 摘要 |
PURPOSE:To enhance dispersion efficiency with a sharp distribution of the size of dispersed grains, by applying an electric field to the dispersed system of a dispersing liquid to electrically charge the grains and causing the same to flow in the grain dispersion. CONSTITUTION:In dispersing organic photoconductive grains in the production of electric photosensitive material, a dispersing liquid 2 and a dispersion medium 3 such as sand are placed into a pot 1, and a shaft 5 consisting of a disk plate 4 is turned. During this time, a port 1 and the shaft 5 are electrically connected with each other through a brush 6 and electric current is allowed to flow from an electric source 7 to electrically charge the grains in the dispersing liquid 2. In doing so, the charge grains flow in the dispersing liquid, thereby eliminating a dead zone where the shearing stress is not influential, resulting in a uniform dispersion of the grains, a high dispersion efficiency, formation of nearly even grain diameter and a sharp grain size distribution. |
