A sheet correcting device includes a plurality of curved surface members including curved surfaces, respectively, to deform a sheet along the curved surfaces, the plurality of curved surface members disposed along a conveyance direction of the sheet, a plurality of pressing members disposed facing the curved surfaces of the plurality of curved surface members, respectively, to press the sheet against the curved surfaces of the plurality of curved surface members, respectively, a sheet tensioner to apply tension to the sheet, and a heater to heat the sheet that is bent by the curved surfaces of the plurality of curved surface members.

An image forming apparatus includes a main body, a development cartridge supplying toner accommodated in a toner accommodating portion to an electrostatic latent image formed on a photoconductor to form a toner image, a toner refilling portion in the development cartridge and on which a toner refill cartridge for refilling toner in the toner accommodating portion is mounted, and a controller controlling operations of the image forming apparatus based on a connection between the development cartridge mounted on the main body and the toner refill cartridge mounted on the toner refilling portion. The toner refilling portion connects the toner refill cartridge to the main body through an interface between the development cartridge and the main body.

A sheet sorting device includes a plurality of trays, a tray shifter, a tray stop position detector, and circuitry. The plurality of trays is disposed in multiple stages in a vertical direction and configured to stack a sheet. The tray shifter is configured to move the plurality of trays separately in a tray shift direction. The tray stop position detector is configured to detect stop positions of the plurality of trays separately. The circuitry is configured to cause the tray shifter to move the plurality of trays to home positions in an initial operation, at least one tray having a home position opposite to a home position of another tray in the tray shift direction. The circuitry is configured to, while moving the plurality of trays at a same time in the initial operation, cause the tray shifter to move the trays in directions opposite to each other.

An image forming apparatus that forms images on sheets, includes: a collection unit configured to collect history information relating to operation of the image forming apparatus; a selection unit configured to select, from among a plurality of accomplishment items, an accomplishment item relating to the operation of the image forming apparatus based on the history information; an acquisition unit configured to notify a user of one or more operation options related to the operation of the image forming apparatus that are for accomplishing the accomplishment item selected by the selection unit, and to acquire a selection result of whether or not the one or more operation options are to be used; and an operation control unit configured to control the operation of the image forming apparatus in accordance with the selection result.

An organic photoconductor includes a cylindrical body having a surface on which an electrostatic latent image is to be formed, and an optical tag provided on an outer circumferential surface of the cylindrical body. The organic photoconductor may be included in a development cartridge for an image forming apparatus.

A sheet conveying apparatus installed in an image forming apparatus according to the present disclosure includes a first guide member provided to a rear cover and configured to guide a sheet along a conveying path, a second guide member provided to the rear cover and configured to be movable between a first position where the sheet is guided to a nip of intermediate discharging rollers and a second position farther from the nip in a sheet conveying direction than the first position, and a movement mechanism configured to move the second member. When the rear cover is moved from a closed position toward an opened position, the movement mechanism moves the second guide member from the first position to the second position.

An image forming apparatus includes, an image forming portion configured to form a toner image on a sheet using printing toner and apply powder adhesive on the sheet, a fixing portion configured to heat the toner image formed on the sheet and the powder adhesive applied on the sheet by the image forming portion and fix the toner image and the powder adhesive to the sheet, and a bonding portion configured to bond the sheet with the powder adhesive by reheating the sheet having been heated by the fixing portion. The bonding portion is arranged above the image forming portion.

An image forming apparatus includes an image forming part, a toner storage part, a toner conveyance part, a drive motor and a control part. The image forming part forms an image on a sheet using a toner. The toner storage part stores the toner replenished to the image forming part. The toner conveyance part conveys the toner. The drive motor generates a drive force by which the toner conveyance part conveys the toner. The control part generates a control signal for controlling the drive motor, based on information showing a rotational speed of the drive motor. The control part executes a determination processing for determining whether a driving of the drive motor is stopped, based on the control signal.

An image forming apparatus includes an image forming unit having a plurality of members, a control unit, and a sound collecting unit. The control unit controls operations of the plurality of members in a first operation mode in which the image forming unit forms an image on a recording material. The sound collecting unit collects a sound that arises in the image forming apparatus during the first operation mode execution to generate a sound signal. When it is determined, based on the generated sound signal, that an abnormal sound has arisen, the control unit determines a source of the abnormal sound by transitioning to a second operation mode after the first operation mode has ended and causing, in the second operation mode, one or more members, from the plurality of members, that are possible sources of the abnormal sound to operate separately from the remaining plurality of members.

An image forming apparatus includes a cassette, an image forming unit configured to form an image on a sheet fed from the cassette a set position, a guide rail configured to draw out the cassette from the set position, and a movable stopper unit that regulates a movement of the cassette in a draw-out direction by abutting with the cassette while the cassette is drawn out from the set position along the guide rail. The movable stopper unit includes a regulating portion movable between a regulating position where the regulating portion regulates a movement of the cassette within a moving trajectory of the cassette in moving in the draw-out direction and a retracting position where the regulating portion is located outside of the moving trajectory and does not regulate the movement of the cassette, and an urging portion configured to urge the regulating portion to the regulating position.