| 摘要 |
PROBLEM TO BE SOLVED: To prevent variation in toner concentration due to quantity of toner with respect to a developing device that toner concentration control is not necessary. SOLUTION: The developing device that a developing chamber is fulfilled with toner and carrier, is provided with a toner feeding path 235, a toner hopper 231 provided with a toner feeding means 232 and a partition member 230-1 making a wall of the developing chamber same as external shape of a developing roll 24. A constant quantity of the toner is fed by the toner feeding means and agitation of developing material inside the developing chamber is improved by the partition member. |
