| 摘要 |
A developing apparatus includes a tank configured to contain a developing agent including a toner and a carrier, the tank having a discharge port configured to discharge the developing agent overflowing from the tank, a supplier configured to develop a latent image by using the toner contained in the tank, a replenisher configured to contain the developing agent and to replenish the developing agent into the tank, and a controller configured to estimate an amount of the developing agent in the tank in according with the amount of the supplied developing agent and the amount of the replenished developing agent and to execute a forced discharge for forcibly discharging the developing agent contained in the tank from the discharge port based on the estimated amount of developing agent.
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