| 摘要 |
PURPOSE: An image forming apparatus, a method for controlling the same, a developing apparatus and a memory medium are provided to detect a residual amount of developer with high accuracy and detect a utilized amount of the developing apparatus from the start of use. CONSTITUTION: An image forming apparatus has a developing apparatus(151) for developing a latent image on an image bearing member corresponding to image information. The developing apparatus is detachably attached to the image forming apparatus. The image forming apparatus includes the first detection device for detecting an amount of developer in the developing apparatus, the second detection device for detecting a utilized amount of the developer in the developing apparatus based on the image information, and a processing unit(241) for judging a utilized amount level of the developing apparatus based on results of detection of the first detection device and the second detection device. The processing unit judges the utilized amount level of the developing apparatus using the result of detection of the first detection device and the result of detection of the second detection device until the result of detection of the first detection device reaches a predetermined value, and judges the utilized amount level of the developing apparatus using the result of detection of the first detection device after the result of detection of the first detection device has reached the predetermined value. |
