Patent ID: 8265496

Claim:
An image forming apparatus comprising: an image forming portion that forms a toner image; a container that is detachably attached to a main body of the image forming apparatus to accommodate toner discharged from the image forming portion; an inflow port that is provided on a side of one end in a longitudinal direction of the container and on a central portion in a width direction of the container, the toner discharged from the image forming portion being caused to flow in the container through the inflow port; a first conveying member that is provided in the container, the first conveying member including a conveying portion that conveys the toner flowing through the inflow port from the one end toward an other end; a second conveying member and a third conveying member that are provided rotatably in the container at both sides of the first conveying member respectively, the second conveying member and the third conveying member including a conveying portion that conveys the toner conveyed by the first conveying member from the other end toward the one end; and a sensor disposed at a downstream side in a toner conveying direction of at least one of the second conveying member or the third conveying member, the sensor detecting toner contained in the container.