An image forming apparatus includes: an image formation part that forms an image on a paper sheet; a conveyor that includes a plurality of conveying members and conveys the paper sheet; a hardware processor that acquires information on a smudge on a paper sheet on which an image has been formed by the image formation part, and identifies, from the plurality of conveying members, one or more dirty conveying member(s) that may have caused the smudge based on at least one of the information on the smudge, information on the conveying members, and information on a job for image formation executed by the image formation part.

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.

A fixing device includes a fixing rotator, a pressure rotator, and a cleaning device. The cleaning device cleans a surface of at least one of the fixing rotator and the pressure rotator. The cleaning device includes a cleaning web, a web holder, a winder, a cleaning pressure rotator, a pressure applier, and a temporary holder. The cleaning web slides over and cleans the at least one of the fixing rotator and the pressure rotator. The web holder holds and sends out the cleaning web. The winder winds the cleaning web. The cleaning pressure rotator presses the cleaning web against the at least one of the fixing rotator and the pressure rotator. The pressure applier presses against the cleaning web along a width direction of the cleaning web perpendicular to a direction in which the cleaning web is wound. The temporary holder temporarily holds the pressure applier.

The present invention is directed to downsize the main body and achieve a good image quality at a low cost. A rotation shaft of a first discharge roller is tilted with respect to that of a second discharge roller. The center of oscillation C of a first discharge roller holding member is provided more upstream in the direction in which a sheet is discharged than a straight line made by the rotation center of the first discharge roller and the rotation center of the second discharge roller.

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 apparatus includes: an image formation part that forms an image on a paper sheet; a conveyor that includes a plurality of conveying members and conveys the paper sheet; a hardware processor that acquires information on a smudge on a paper sheet on which an image has been formed by the image formation part, and identifies, from the plurality of conveying members, one or more dirty conveying member(s) that may have caused the smudge based on at least one of the information on the smudge, information on the conveying members, and information on a job for image formation executed by the image formation part.

An image forming apparatus includes, an image former that forms an image on a sheet, a conveyance path in which the sheet is conveyed to the image former, a sheet detector that is provided in the conveyance path and that detects a type of the sheet conveyed on the conveyance path; and a controller that performs control related to maintenance of the conveyance path based on the type of the sheet detected by the sheet detector.

A roller cleaning mechanism includes a cleaning member making contact with a conveying roller, a holder holding the cleaning member, a housing for the holder, and an urging member. The holder is supported on the housing swingably about a swing shaft parallel to the axial direction of a driving roller. The urging member urges the holder oppositely to the rotation direction of the conveying roller. When the conveying roller rotates, its rotative driving force keeps the holder at a cleaning position where a cleaning face of the cleaning member makes contact with the outer circumferential face of the conveying roller. When the conveying roller is halted, the urging force of the urging member keeps the holder at a retracted position where a part of the cleaning member different from the cleaning face makes contact with the outer circumferential face of the conveying roller.

An image forming apparatus according to the present disclosure includes a paper dust cleaning device configured to remove paper dust adhered to a surface of a conveying roller that conveys a paper sheet in a predetermined conveying direction. The paper dust cleaning device includes a paper dust removing member configured to extend in an axial direction of the conveying roller and come in contact with a surface of the conveying roller; a holder formed in a long shape in the axial direction and configured to hold the paper dust removing member; and a holder support portion configured to hold the holder so that the paper dust removing member comes in contact with the surface of the conveying roller, and configured to support the holder so as to be movable in the axial direction.

A sheet conveyance device includes a rotating member that rotates while in contact with a sheet to convey the sheet, and a cleaning portion that cleans the rotating member. The cleaning portion has a cleaning member that makes contact with the outer circumferential surface of the rotating member to remove foreign substances from the outer circumferential surface of the rotating member and a housing that stores the foreign substances removed from the outer circumferential surface of the rotating member. A part of the housing is arranged at a position where it can make contact with the sheet, and guides the sheet conveyed by the rotating member.