| 摘要 |
PURPOSE:To obtain the carrier for developing electrostatic charge images with which the initial characteristics are exhibited stably over a long period of time and which have excellent durability by dispersing and incorporating a carbon fluoride having >=100m<2>/g BET specific surface area into a resin coating layer. CONSTITUTION:The carbon fluoride having >=100m<2>/g BET specific surface area is used as the carbon fluoride. The content ratio of the carbon fluoride in the resin coating layer is controlled to the specified range (5 to 60wt.%), by which the uniformity of the dispersion of the carbon fluoride in the resin coating layer is improved. The affinity of the carbon fluoride and the coating resin is improved in this way and the adhesive property between the carbon fluoride and the coating resin is enhanced. The possibility that the carbon fluoride is detached from the carrier surface is lowered and the durability is improved. In addition, the carbon fluoride is eventually uniformly dispersed and incorporated into the resin coating layer and the compounding of the coating resin and the carbon fluoride is accelerated. The carbon fluoride is sufficiently uniformly dispersed and incorporated into the resin coating layer and the good copied images without generating the fogging are stably formed many times. |
