Abstract: An image forming apparatus includes an image forming unit configured to form an image by using a toner based on image data; a detector configured to detect the toner in the image forming unit; a mount portion to which a container containing the toner is mounted; and a controller configured to perform a supply control for supplying the toner from the container mounted to the mount portion, based on a detection result of the detector; determine a usage condition of the container mounted to the mount portion; determine an amount of the toner supplied from the container in the supply control, based on a determination result of the usage condition and the image data; cumulate the amount of the toner supplied from the container in the supply control; and determine a remaining amount of the toner in the container mounted to the mount, based on a cumulated amount.

Abstract: An image forming apparatus including: an image forming unit configured to form an image by using a toner based on image data; a detector configured to detect the toner in the image forming unit; a mount to which a container containing a supply toner is mounted; and a controller configured to: perform a supply control for supplying the supply toner from the container mounted to the mount, based on a detection result of the detector; determine a usage condition of the container mounted to the mount; determine an amount of the supply toner supplied from the container in the supply control, based on a determination result of the usage condition and the image data; cumulate the amount of the supply toner supplied from the container in the supply control; and determine a remaining amount of the supply toner in the container mounted to the mount, based on a cumulated amount.

Abstract: An image forming apparatus includes a belt unit capable of being inserted into and pulled out of the apparatus, the belt unit including a movable endless belt, a supporting frame supporting the endless belt and having an accommodating portion, a grip member which is provided on the supporting frame at a position outside the belt in a widthwise direction of the belt that is orthogonal to a moving direction of the belt and which is movable between a first position in which the grip member is projected out of the accommodating portion in a direction orthogonal to the widthwise direction and a second position in which the grip member is accommodated in the accommodating portion, and an urging member configured to urge the grip member in a direction from the second position toward the first position.

Abstract: A steering roller autonomously steers an intermediate transfer belt. A pre-secondary-transfer roller is disposed at a position upstream of and adjacent to a driving roller also functioning as a transfer inner roller, and includes a rubber material on at least a surface thereof. This suppresses movement of the intermediate transfer belt even when a lateral-deviation converging position is changed by the change of position of the driving roller having large frictional force due to the pressing force of a secondary transfer roller. Hence, the belt deviation amount is reduced, and the time until lateral deviation converges is shortened.

Abstract: A steering roller autonomously steers an intermediate transfer belt. A pre-secondary-transfer roller is disposed at a position upstream of and adjacent to a driving roller also functioning as a transfer inner roller, and includes a rubber material on at least a surface thereof. This suppresses movement of the intermediate transfer belt even when a lateral-deviation converging position is changed by the change of position of the driving roller having large frictional force due to the pressing force of a secondary transfer roller. Hence, the belt deviation amount is reduced, and the time until lateral deviation converges is shortened.