| 摘要 |
PROBLEM TO BE SOLVED: To provide a developing device where the toner powder pressure in the vicinity of a toner replenishing opening can be maintained approximately constant and stable toner replenishing can be carried out to developer and a process cartridge, and an image forming device provided with the developing device. SOLUTION: In this device, a magnet roller 20 and a driving means (not shown) to rotate and drive the magnet roller 20 are installed as a means to feed out magnetic toner inside a toner hopper 8 toward the toner replenishing opening 8a at an approximately constant pressure. |
