| 摘要 |
PURPOSE:To form an image forming device which minimizes the decrease of visibility by staining with a toner and has excellent durability by incorporating a metallic oxide having <=100mmu primary grain size into the surface layer of an image forming carrier body. CONSTITUTION:The metallic oxide having <=100mmu primary grain size is incorporated into the surface layer 47. The metallic oxide to be incorporated therein is produced by a vapor phase method and has characteristics such as fine primary grain sizes, extremely light chemical purity and large specific surface area which are considerably different from the characteristics of ordinary metallic oxides. The porous surface layer in which the spaces among pigment particles are voids is resulted unless the metallic oxide having <=100mmum primary grain size is incorporated into the surface layer. The toner and color material used therein, etc. are embedded into the gaps by repeated uses and the background is considerably contaminated in such a case. The gaps are packed if the metallic oxide having <=100mmu primary grain size is incorporated into the surface layer. |
