An imaging system includes a steering roller and a positioning mechanism. The steering roller extends along a longitudinal direction, and being tiltable about a fulcrum to adjust an alignment position of an endless belt. The positioning mechanism is coupled to the steering roller, to position an adjustable position of the fulcrum of the steering roller, along the longitudinal direction of the steering roller. The positioning mechanism includes a guide that extends along the longitudinal direction of the steering roller, and a protrusion that engages with the guide, and that is located at the adjustable position of the fulcrum.

A sheet conveyor includes a conveyance belt configured to rotate to convey a sheet on which a liquid has been applied in a conveyance direction, and a guide configured to guide the sheet to the conveyance belt, a position of the guide being variable in the conveyance direction.

In some examples, a sheet-processing machine includes a transport unit for transporting sheets. The transport unit includes a feed roller configured as an infeed roller and a feed roller configured as a diverting roller, which define a transport plane of sheets. At least two further feed rollers of the transport unit are arranged outside the transport plane. At least one feed roller of the at least two further feed rollers is configured as a pivoting roller that pivots and/or that can be pivoted about a pivot axis. The pivot axis of the pivoting roller is an axis that is normal of an axis of rotation of the pivoting roller, and the pivoting roller is configured to automatically pivot about the pivot axis.

An imaging system includes a steering roller and a positioning mechanism. The steering roller extends along a longitudinal direction, and being tiltable about a fulcrum to adjust an alignment position of an endless belt. The positioning mechanism is coupled to the steering roller, to position an adjustable position of the fulcrum of the steering roller, along the longitudinal direction of the steering roller. The positioning mechanism includes a guide that extends along the longitudinal direction of the steering roller, and a protrusion that engages with the guide, and that is located at the adjustable position of the fulcrum.

A sheet storage device includes a first reel that is disposed along a first axis and around which a first tape is wound; a second reel that is disposed along a second axis and around which a second tape is wound; a drum that is disposed along a third axis so as to wound a sheet, that is sandwiched between the first tape and the second tape at least partially overlapping each other, on an outer peripheral surface of the drum together with the first tape and the second tape; a first tape path between the first reel and the drum; a second tape path between the second reel and the drum; and a changing mechanism disposed in at least one of the first tape path or the second path, the changing mechanism changing a position of a corresponding tape to a direction parallel to the third axis.

A belt driving device includes: an endless belt; a stretch roller to engage the endless belt, the stretch roller including a rotary shaft; a steering roller spaced apart from the stretch roller within the endless belt; an adjustment member located along the rotary shaft of the stretch roller, the adjustment member movable along the rotary shaft; and linking mechanism to couple the adjustment member to the steering roller, the linking mechanism to engage a contact surface of the adjustment member. The contact surface includes contact points positioned at different distances from the rotary shaft to raise the linking mechanism during movement of the adjustment member, to cause the steering roller to tilt at an angle, and to maintain an alignment of the endless belt.

An image forming apparatus includes a first roller having a first portion between tapered portions, which are at each end of the first portion. An outer diameter of each tapered portion decreases with distance from the first portion along a width direction of the first roller. A second roller has a second portion facing the first portion of the first roller and third portions, which are at each end of the second portion. The third portions face the tapered portions of the first roller. A belt of the image forming apparatus has an inner surface contacting the first portion of the first roller and an outer surface forming a nip with the second portion of the second roller. The belt has a protruding portion on the inner surface at each end of the belt in the width direction. The protruding portions face the tapered portions of the first roller.

An image forming apparatus includes a belt conveyance device that corrects leaning of an endless belt member, the belt conveyance device being detachably attachable to an apparatus body of the image forming apparatus; a first guiding portion that supports a first guided portion provided in a frame member supporting rotatably a first roller on which the belt member is laid under tension and guides the belt conveyance device being attached to or detached from the apparatus body; and a second guiding portion that supports a second guided portion provided in a steering unit supporting rotatably a second roller on which the belt member is laid under tension, releases the second guided portion at an attachment position of the belt conveyance device to the apparatus body, and guides the belt conveyance device being attached to or detached from the apparatus body.

A media transport system, includes a transport path, a drive gear at one end of the transport path, a driven gear at an opposite end of the transport path, an endless loop transmission element engaged with the drive gear and the driven gear, a media clamp secured to the endless loop transmission element, and a one-way clutch coupled with the driven gear. The endless loop transmission element is to rotate in one direction to move the media clamp and transport media from the one end of the transport path toward the opposite end of the transport path, and the one-way clutch is to allow rotation of the driven gear in the one direction and resist rotation of the driven gear in an opposite direction.

A media transport system, includes a transport path, a drive gear at one end of the transport path, a driven gear at an opposite end of the transport path, an endless loop transmission element engaged with the drive gear and the driven gear, a media clamp secured to the endless loop transmission element, and a one-way clutch coupled with the driven gear. The endless loop transmission element is to rotate in one direction to move the media clamp and transport media from the one end of the transport path toward the opposite end of the transport path, and the one-way clutch is to allow rotation of the driven gear in the one direction and resist rotation of the driven gear in an opposite direction.