An image forming apparatus includes an apparatus main body, an image bearing member unit, a transfer member, a supporting member, and a positioning member. The image bearing member unit and the transfer member are disposed attachable to and detachable from the apparatus main body. The supporting member includes a to-be-contacted portion configured to be in contact with a to-contact portion of the image bearing member unit. The to-be-contacted portion is movable from a first position to a second position by an attachment operation of the image bearing member unit to the apparatus main body, where the first position is a position to be in contact with the to-contact portion, the second position is a position different from the first position, and the second position is a position at which the supporting member is supported by the positioning member and the to-be-contacted portion is out of contact with the to-contact portion.

An image forming apparatus includes an image forming portion, a belt unit including a cleaning unit and an opposing roller, and a swinging mechanism. The swinging mechanism includes a swingable member which is provided in a position different from a rotation center of the opposing roller while holding the opposing roller and the cleaning unit without changing a relative positional relationship between the opposing roller and the cleaning unit and which is swingable about a swing axis.

An image forming apparatus includes a detachable unit attachable to and detachable from an apparatus body, a preceding unit configured to move relative to the apparatus body before the detachable unit is attached to or detached from the apparatus body, and an adhesion-suppressing component provided on the preceding unit and configured to suppress adhesion of floating matter in the apparatus body to a grip of the detachable unit by covering the grip.

An image forming apparatus includes a main body, an upper unit, and a moving mechanism. The main body includes an image forming section. The image forming section forms an image on paper. The upper unit is disposed in an upper portion of the main body. The moving mechanism moves the upper unit to a first position and to a second position. The first position of the upper unit is above a position of the image forming section in the upper portion of the main body. The second position of the upper unit is in the upper portion of the main body and is different from the first position.

An image forming apparatus includes an apparatus body including an image bearing member configured to bear a toner image, a transfer unit including a transfer portion configured to transfer the toner image borne on the image bearing member onto a sheet, the transfer unit being pivotably supported with respect to the apparatus body, an opening/closing unit disposed at a position farther from the apparatus body than the transfer unit is, and openably and closably supported with respect to the apparatus body, and a positioning portion pivotably supported with respect to the apparatus body and configured to position the transfer unit with respect to the apparatus body. The positioning portion is entirely disposed further on an outer side in the apparatus body than a pivot center of the transfer unit in a horizontal direction.

An image forming apparatus includes: a cover configured to be pivotal between a closed position and an open position to open an opening portion through which an intermediate transfer unit is removable, wherein when the cover is moved from an intermediate position to the open position, a secondary transfer unit is changed by using a self-weight of the secondary transfer unit from a first relative position to a second relative position, and wherein when the cover is located in the open position and the intermediate transfer unit is supported in a first position by a guiding portion, a secondary transfer unit interferes with the intermediate transfer unit if located in the first relative position, but does not interfere with the intermediate transfer unit if located in the second relative position.

An image forming apparatus includes an image forming device, a body, an intermediate transfer unit, a cover, and a guide rail. The body has a bottle housing hole in which a toner bottle is removably inserted. The intermediate transfer unit includes an intermediate transfer belt and a plurality of rollers to drive the intermediate transfer belt and is removably disposed between the image forming device and the bottle housing hole. The intermediate transfer unit and the toner bottle are accessible from a front side of the body. The openable and closable cover is disposed at an inlet-and-outlet port of the bottle housing hole. The guide rail is disposed at a lower side of the bottle housing hole to slidably guide the intermediate transfer unit and has a front-side end extended to a position crossing at least a vertical projection line of the cover on the front side of the body.

A pressing device includes an intermediate transfer unit, a secondary transfer unit, a presser, and a drive transmitter. The intermediate transfer unit transfers and conveys a toner image. The secondary transfer unit faces the intermediate transfer unit to form a nip portion between the secondary transfer unit and the intermediate transfer unit and transfers the toner image onto a conveyed material at the nip portion. The presser applies a pressing force for pressing the secondary transfer unit to the intermediate transfer unit at the nip portion. The drive transmitter transmits the pressing force and a conveyance driving force to a driven transmitter of the secondary transfer unit, is restricted in position by the presser, and is movable together with the presser.

A transfer unit includes an endless belt member, belt support rollers, a frame, a meandering detecting sensor, an alignment adjusting mechanism, and a conveyance guide disposed on a downstream side of the belt member with respect to a recording-medium conveyance direction. The alignment adjusting mechanism, based on a detection result of the meandering detecting sensor, causes one end portion of a downstream-side belt support roller of the belt support rollers which is adjacent to the conveyance guide to move along the recording-medium conveyance direction. The alignment adjusting mechanism causes a first end portion of the conveyance guide disposed on a same side as the one end portion of the downstream-side belt support roller to move following movement of the one end portion of the downstream-side belt support roller, and thereby maintains a distance between the belt member and the conveyance guide constant.

An image forming apparatus includes an apparatus body and a unit detachably mounted to the apparatus body and comprising a unit body, a cam, a first movement member, and a second movement member. The unit includes a first contact portion, an urging portion, and a second contact portion. The second movement member is attachable to the first movement member in a first manner or a second manner. A detection pattern of a detection signal differs between a state in which the second movement member is in contact with the first contact portion and a state in which the second movement member is in contact with the second contact portion, and differs between a state in which the second movement member is attached in the first manner and a state in which the second movement member is attached in the second manner.