IMAGE FORMING APPARATUS

摘要

An image forming apparatus (A) is provided that includes a light-emitting unit (300) which emits light to an image bearing member (100) which bears a developer image and that detects presence or absence of a developer container (T) storing developer or a shape of the developer container on the basis of the number of electrons discharged from or received by the image bearing member when the light-emitting unit emits the light.