| 摘要 |
PROBLEM TO BE SOLVED: To make maintainability high and to obtain a stable image over a long term with simple and inexpensive constitution. SOLUTION: A developer cartridge 5 integrally equipped with a supplied developer storing part 5a storing developer to be supplied to a developing container 2 and a recovered developer storing part 5b storing recovered developer recovered from the container 2 is arranged nearly above the container 2. A magnet 7 rotatable centering a shaft 7a is arranged in the vicinity of the recovery port 6b of the storing part 5b, and the developer adhering to the magnet 7 is carried to the vicinity of the recovery port 6b by the rotation of the magnet 7, peeled by a scraper 8 and recovered into the storing part 5b from the recovery port 6b. The recovered amount of the developer is changed in accordance with toner concentration by a toner concentration detecting device 10. |
