Abstract: A sheet feeding device includes a stacking member, a feeding unit, and a detachable separation unit. The feeding unit feeds sheets stacked from the stacking member. The separation unit separates the fed sheets one by one. The separation unit includes a rotating member to abut and separate from the feeding unit and to rotate, a biasing member to bias the rotating member toward the feeding unit, and an engaged member to be engaged with an engagement member included in the sheet feeding device. The engagement member can move to a first position where the engagement member is engaged with the engaged member, and a second position away from the engaged member. Where the engagement member moves from the first to the second position when the separation unit is attached to the sheet feeding device, the separation unit moves in a detachment direction using the biasing member.

Abstract: A container to store residual transfer toner remaining on an intermediate transfer belt is disposed in a region of a transfer unit, where the region is defined by the inner circumferential surface of the intermediate transfer belt. A single conveyance member, which rotates to convey toner conveyed from an inlet toward the container, is disposed in the inside of the container. An end portion of the conveyance member that is opposite to an end portion on a side of the inlet is located in a central region of the container.

Abstract: A transfer device includes a rubbing member provided in contact with a transfer belt, a supporting member supporting the rubbing member, and a damping member configured to damp vibration of the transfer device. The damping member is fastened to the supporting member, and an end of the damping member in a width direction that is orthogonal to a direction of rotation of the transfer belt is a free end.

Abstract: An image forming apparatus includes a photosensitive member that rotates at a first speed, an intermediate transfer member that rotates at a second speed lower than the first speed, and a collecting member disposed in a state in which a fixed surface is pressed against the rotating intermediate transfer member. The collecting member collects toner remaining on the intermediate transfer member after a toner image is secondarily transferred from the intermediate transfer member to a transfer material.

Abstract: An image forming apparatus includes a photosensitive member that rotates at a first speed, an intermediate transfer member that rotates at a second speed lower than the first speed, and a collecting member disposed in a state in which a fixed surface is pressed against the rotating intermediate transfer member. The collecting member collects toner remaining on the intermediate transfer member after a toner image is secondarily transferred from the intermediate transfer member to a transfer material.

Abstract: A transfer device includes a rubbing member provided in contact with a transfer belt, a supporting member supporting the rubbing member, and a damping member configured to damp vibration of the transfer device. The damping member is fastened to the supporting member, and an end of the damping member in a width direction that is orthogonal to a direction of rotation of the transfer belt is a free end.

Abstract: A transfer device includes a rubbing member provided in contact with a transfer belt, a supporting member supporting the rubbing member, and a damping member configured to damp vibration of the transfer device. The damping member is fastened to the supporting member, and an end of the damping member in a width direction that is orthogonal to a direction of rotation of the transfer belt is a free end.

Abstract: A transfer device includes a rubbing member provided in contact with a transfer belt, a supporting member supporting the rubbing member, and a damping member configured to damp vibration of the transfer device. The damping member is fastened to the supporting member, and an end of the damping member in a width direction that is orthogonal to a direction of rotation of the transfer belt is a free end.

Abstract: An optical detection device includes a light emitting element, a light receiving element, a housing including a first aperture and a second aperture, wherein light emitted from the light emitting element reaches the light receiving element through the second aperture after passing through the first aperture and being reflected by an irradiated surface, and a slope provided in the housing and inclined in an array direction of the light emitting element and the light receiving element, as viewed in a normal direction of the irradiated surface, wherein the slope is provided at a portion on an upstream side of the first aperture in an emission direction of light from the light emitting element, the portion faces the light emitting element in the array direction, and light emitted from the light emitting element enters the portion.

Abstract: An optical detection device includes a light emitting element, a light receiving element, a housing including a first aperture and a second aperture, wherein light emitted from the light emitting element reaches the light receiving element through the second aperture after passing through the first aperture and being reflected by an irradiated surface, and a slope provided in the housing and inclined in an array direction of the light emitting element and the light receiving element, as viewed in a normal direction of the irradiated surface, wherein the slope is provided at a portion on an upstream side of the first aperture in an emission direction of light from the light emitting element, the portion faces the light emitting element in the array direction, and light emitted from the light emitting element enters the portion.