Patent attributes
According to one embodiment, an image forming apparatus includes a storage portion, a first electrode, a second electrode, a measuring unit, a detected portion, an image forming unit, and a controller. The storage portion stores a recording material. The measuring unit measures a change of capacitance between the first electrode and the second electrode. The detected portion is located inside the storage portion and is capable of moving so that at least one of a distance to the first electrode and a distance to the second electrode changes. The image forming unit forms an image with the recording material. The controller controls supplying of the recording material to the storage portion in response to the change of the capacitance measured by the measuring unit.
