| 摘要 |
PROBLEM TO BE SOLVED: To solve the problem in which: in conveying a toner containing a crystalline resin, when a screw is rotated for a long time or rotated once and stopped and rotated again, the toner is required to have low density to a certain extent to prevent excessive force to be applied on the screw, which may result in clogging of the toner to cause unstable supply of the toner and the occurrence of a large number of white streaks on an image.SOLUTION: After diligent consideration of the problem, the inventors have found that, by controlling a loosened apparent density and a hardened apparent density of a toner containing a crystalline resin to be fallen within a specific range, a force applied on the toner is reduced during conveyance, and accordingly the toner can hardly be compressed, which causes aggregation generated inside a screw to be easily collapsed, and thereby the toner can be stably supplied to a developing device. |
