An image forming apparatus is configured such that in a case where images are to be formed on a first surface of a preceding sheet, on a first surface of a succeeding sheet fed to the first conveyance path succeeding to the preceding sheet and on a second surface of the preceding sheet, a first conveyance member is stopped without reversing the preceding sheet to a second conveyance path in a case where the image has been formed on the first surface of the preceding sheet and permission of preparing the image to be formed on the first surface of the succeeding sheet is not issued yet. The first conveyance member restarts conveyance of the preceding sheet to the second conveyance path based on timing when an image forming unit starts preparing the image to be formed on the first surface of the succeeding sheet.

An image forming apparatus with a duplex printing function may include a closeable and openable portion. In one example, the portion may correspond to a cover of the image forming apparatus. The cover may include guiding portions configured to define a return path for duplex printing. In another example, the portion may correspond to a document reading unit including an outer casing. A portion of the outer casing may be configured to guide a recording sheet that is conveyed out of a housing of the image forming apparatus by a switchback roller. In one example, the switchback roller may convey a recording sheet to a position above an upper surface of the outer casing.

An image forming apparatus forms an image on a recording material by using toner containing a release agent, and includes: a fixer that fixes, on the recording material, a toner image formed on the recording material; a reverse transport path that is arranged on a downstream side of the fixer in a recording material transport direction and reverses and transports the recording material after fixing; a reverse roller that is provided on the reverse transport path and reverses and sends out the recording material by reversely transporting the recording material; a transporter that is provided between the fixer and the reverse roller on the reverse transport path; and a release agent remover that removes the release agent adhering to the reverse roller, wherein the transporter includes a release agent adhesion preventer that prevents the release agent from adhering to the transporter.

An image forming system includes an image forming apparatus, a sheet processing device, and control circuitry. The image forming apparatus forms an image on a sheet. The sheet processing device performs post-processing on the sheet. The sheet processing device includes a first conveyance path through which the sheet is conveyed and subjected to the post-processing and a second conveyance path through which the sheet is conveyed without the post-processing. In response to an instruction of print jobs including both a print job of one or N copies subjected to the post-processing and a print job not subjected to the post-processing, the circuitry executes the job not subjected to the post-processing during execution of an M-th copy of the job subjected to the post-processing and causes the sheet to be conveyed through the second conveyance path, where N is two or greater and M satisfies 1≤M<N.

After outputting a first start signal for causing an image forming unit to start formation of an image for a first side of an i-th sheet, a controller causes a feeding member to start feeding of the i-th sheet, and determines whether or not the i-th sheet has already been detected by a detector. In a case where the i-th sheet has been detected before a predetermined time has elapsed, the controller outputs a second start signal for causing the image forming unit to start formation of an image for second side of an (i−1)th sheet. In a case where the i-th sheet has not been detected before the predetermined time has elapsed, the controller outputs the second start signal after the i-th sheet is detected.

An image forming apparatus includes an image forming portion, an oblique movement correcting portion including a first registration roller pair and a first moving portion, a reversing portion, and a re-feeding portion. The reversing portion includes a reversing roller pair and a second moving portion. The re-feeding portion includes a second registration roller pair. When an image is formed on a second surface of a sheet opposite from a first surface of the sheet, a side end position of the sheet is corrected by the second moving portion and oblique movement of the sheet is corrected, and then the side end position of the sheet is corrected again by the first moving means and the sheet is fed to the image forming portion.

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 a cutting part cutting a medium, a transfer part arranged on a downstream side of the cutting part in a carrying direction and transfers a developer image to the medium; a flexure forming part having a guide part and forms a flexure of the medium by bending the medium between the cutting part and the transfer part in the carrying direction; and an opposing part that is arranged opposing the flexure forming part via a carrying path through which the medium is carried, wherein the guide part performs a retreat movement either before or after the cutting part starts to cut the medium, wherein the retreat movement is a movement of the guide part in which the guide part moves in a direction away from the opposing part.

A printer includes an image forming unit configured to form an image on a sheet by an electrophotographic method, and a recording unit configured to record an image on a sheet by an inkjet method. An image recording position of the recording unit is located above an image forming position of the image forming unit.

An image forming apparatus includes an image forming engine, a re-conveyance path configured to guide a sheet, on which an image is formed by the image forming engine, to be switched back and re-conveyed toward the image forming engine. The apparatus also includes a discharge tray, and a discharge path configured to guide the sheet in a sheet discharge direction toward the discharge tray. A stack lever is configured to contact a top surface of the sheet on the discharge tray and press the sheet toward the discharge tray. A guide member is configured to form a part of the re-conveyance path, extend up to a position downstream of the stack lever in the sheet discharge direction above the stack lever, and guide the sheet being conveyed along the re-conveyance path, between the guide member and the stack lever.