| 摘要 |
PURPOSE:To suppress the void of images by carrier flying by specifying (resistance value of carrier core material)/(carrier resistance value) to >= 0.020 and incorporating a toner of >= 16mum grain size into a carrier at <= 1.5% number ratio. CONSTITUTION:The (resistance value of carrier core material)/(carrier resistance value) is >= 0.020 and the toner of >= 16mum grain size is incorporated into the carriers at <= 1.5% number ratio. The resistance value of the coating layer of the carrier is decreased and the holding power of the counter charge in the coating layer is optimized by specifying the (resistance value of carrier core material)/(carrier resistance value) to >= 0.020. The content of the large toner of >= 16mum grain size is confined to <= 1.5% number ratio to decrease the ratio at which the large counter charge remains in the coating layer of the high polymer of the carrier. The void of the images by the carrier flying is prevented in this way. |
