An image forming apparatus includes a housing having an opening, a cover movable between an open position and a closed position, a first photoconductive drum and a second photoconductive drum, a first exposing head having a first boss and rotatably coupled to the cover, a second exposing head having a second boss and rotatably coupled to the cover, and a cam rotatably coupled to each of the first exposing head and the second exposing head. The cam is configured to rotate each of the first exposing head and the second exposing head. The cam includes (i) a first elongated hole into which the first boss fits and extending a direction intersecting a movement direction in which the cam moves and (ii) a second elongated hole into which the second boss fits and extending in a direction intersecting the movement direction of the cam.

An image forming apparatus includes an apparatus body and a moveable unit. The apparatus body includes an image forming device and a restriction portion. The moveable unit includes an image reading device and is detachably attached to the apparatus body. The moveable unit is opened and closed with respect to the apparatus body by rotation about a rotation shaft when the moveable unit is attached to the apparatus body. The moveable unit is attached to and detached from the apparatus body by moving in an axial direction of the rotation shaft. The moveable unit further includes a restricted portion that engages with the restriction portion that restricts a movement of the moveable unit in the axial direction. The restriction portion or the restricted portion further includes a deformation portion having elasticity. The deformation portion is deformed so that the moveable unit is attached to and detached from the apparatus body.

An apparatus includes an apparatus body, an exterior cover configured to pivot around a pivot shaft extending in a first direction, and extend in the first direction and a second direction orthogonal to the first direction, a first engagement portion including a first engagement surface, and a second engagement portion, the second engagement portion including a facing surface facing the first engagement surface. When viewed in a third direction vertical to an exterior surface of the exterior cover, the first engagement surface and the facing surface at least partially overlap each other. The facing surface includes a second engagement surface and an inclined surface. When viewed in the third direction, a ridgeline formed by the second engagement surface and the inclined surface extends further away from the pivot shaft in the second direction as the ridgeline extends more downstream in the first direction.

An image forming apparatus includes an apparatus main body to which a cartridge is detachably attached. The apparatus main body includes a frame having an opening portion through which the cartridge is attached to the apparatus main body; an opening and closing member supported by the frame rotatably between an open position in which the opening portion is exposed and a closed position in which the opening portion is covered with the opening and closing member and having a stacking surface on which a sheet is to be stacked; a discharging roller discharging the sheet in a discharging direction onto the stacking surface; and a regulating wall which is movably attached to the opening and closing member and extends from the stacking surface toward the discharging roller in a direction intersecting the discharging direction to regulate an upstream edge of the sheet in the discharging direction.

According to an embodiment, an open and close detection device is provided with a moving member, a first lever, a second lever, and the like. The moving member is held to be movable by a holding member within a planar area including an initial position and a detection position. Each of the first lever and the second lever includes a contact guide section, and moves the moving member in association with a closing operation of an open and close member. Also, when one of the first lever and the second lever is to move the moving member, this movement is guided by the contact guide section of the other lever.

An image forming apparatus configured to form an image on a sheet includes a main body, an opening and closing part, a link part, and an urging member. The link part is connected to the main body and the opening and closing part. When the opening and closing part moves between open and closed positions, the link part moves perpendicular to a direction along a rotating shaft of the link part to contact and be received by the main body. The opening and closing part can move in a state in which the link part and the main body contact each other. When the opening and closing part is in the closed position, the link part and the main body are separated from each other, and the opening and closing part is urged toward the main body by the link part urged by the urging member.

A damper mechanism has first and second rail members, a biasing member, and a slide member. The first rail member is fixed inside the opening/closing member along the up/down direction, and has an oblong guide hole formed therein extending along the longitudinal direction. The second rail member has fixed to a top end part thereof an engaging pin inserted through the guide hole, and has a bottom end part swingably supported on the apparatus main body. The biasing member biases the first and second rail members in a direction in which these approach each other. The slide member is made of resin fixed to the engaging pin, slides while in contact with the first rail member and the opening/closing member, and prevents contact between the engaging pin and an inner circumferential rim of the guide hole.

An image forming apparatus includes: an open/close member supported so as to be movable between an open position at which an inside of an apparatus body is exposed and a closed position at which the apparatus body is closed; an engaged portion provided on the apparatus body; an engaging member having an engaging portion that is engageable with the engaged portion and a lever portion that contacts the engaged portion to guide the engaging portion to the engaged portion when the open/close member is moved from the open position to the closed position, the engaging member being provided on the open/close member and being rotatable forward and in reverse; and an urging member that urges the engaging member. The urging direction of the urging member is changeable between fixing and releasing directions in which the engaging member is drawn into and moved away from the engaged portion, respectively.

A branch frame has a first guide surface and a second guide surface. In a state where a first cover is located at an open position, at least part of the first cover is located in a space through which a fixing device passes when the fixing device is detached from a mount portion, and the fixing device is unattachable to and undetachable from the mount portion through a first opening. In a state where the branch frame is attached to a main housing, at least part of the branch frame is located in the space, and the fixing device is unattachable to and undetachable from the mount portion through the first opening. In a state where the first cover and the branch frame are detached from the main housing, the fixing device is attachable to and detachable from the mount portion through the first opening.

An image forming apparatus includes an object disposed in an apparatus body so as to be capable of being taken out through an opening; an opening-closing portion that is rotatable and that covers the opening and rotates upward to open the opening; and an operating portion that is rotatable and disposed in front of the opening-closing portion. The operating portion is disposed at a position on a rotation trajectory along which the opening-closing portion rotates upward and on a path along which the object is taken out of the apparatus body. The operating portion rotates forward so as to be retracted from the rotation trajectory and the path along which the object is taken out and so that the path along which the object is taken out is formed between the operating portion and the opening-closing portion in the open state.