An image forming apparatus includes a transport unit, a transfer unit and a support unit. The transport unit transports a recording medium. The transfer unit transfers an image formed with particles onto an image formation surface of the recording medium transported by the transport unit by an electric field formed between the transfer unit and the image formation surface by making contact with the image formation surface. The support unit supports the recording medium, is transported to the transfer unit together with the recording medium by the transport unit, and is not directly conductive with the transfer unit.

An image forming apparatus includes a paper tray, a pair of conveyance rollers, an image sensor, and a control apparatus. A large number of sheets are stacked and set in the paper tray. The pair of conveyance rollers convey the sheets to a transfer position of an image. The image sensor reads the sheets upstream of the transfer position. The control apparatus processes an output signal from the image sensor. The control apparatus calculates an amount of lateral displacement of the sheet from an output signal when the image sensor reads the sheet, and detects a setting failure of the sheet in the paper tray when the control apparatus continuously calculates an amount of lateral displacement exceeding a predetermined threshold value.

An image forming apparatus includes: an attachment table to which an object is attached; a transfer unit that transfers an image onto the object; and a transport unit that transports the attachment table along a transport path that has a transport start position on one side relative to the transfer unit and has a transport end position on a same side as the transport start position relative to the transfer unit, the transport path extending beyond the transfer unit and the attachment table being transported so as to turn back at a position beyond the transfer unit.

An image forming system includes an image forming apparatus and a feeding device, the image forming apparatus including an image forming unit, a housing, an opening/closing door openable and closable between a first closed position and a first open position, and a support unit openable and closable between a second closed position and a second open position and configured to support a sheet when the support unit is at the second open position, the feeding device being movable in a direction horizontal to the image forming apparatus, configured to move to a coupled position and a decoupled position and feed the sheet to the image forming apparatus when the feeding device is at the coupled position, wherein when the feeding device is at the decoupled position and the opening/closing door is at the first open position, the feeding device overlaps the support unit as viewed from a first direction.

An image forming system includes an image forming apparatus and a feeding device, the image forming apparatus including an image forming unit, a housing, an opening/closing door openable and closable between a first closed position and a first open position, and a support unit openable and closable between a second closed position and a second open position and configured to support a sheet when the support unit is at the second open position, the feeding device being movable in a direction horizontal to the image forming apparatus, configured to move to a coupled position and a decoupled position and feed the sheet to the image forming apparatus when the feeding device is at the coupled position, wherein when the feeding device is at the decoupled position and the opening/closing door is at the first open position, the feeding device overlaps the support unit as viewed from a first direction.

First and second cover portions are arranged above a loading tray and below a transfer belt and overlap a loading surface and the transfer belt. When the loading tray in an extension state moves from a pulled-out position to a mounted position, the second cover portion moves in a mounting direction by movement of the loading tray. When the loading tray in the extension state is located in the mounted position, a protruding portion of the loading tray is located downstream of the housing in the mounting direction, and the second cover portion covers the protruding portion from above. When the loading tray is located in the mounted position, at least a part of the second cover portion has an area located downstream of a first cover downstream end in the mounting direction and overlapping the transfer belt and the loading surface, viewed in the direction of gravitational force.