In accordance with an embodiment, an image forming apparatus includes an operation section configured to receive instruction information specifying a print media, a printer section configured to drive an image carrier, the printer section including the image carrier on which an image including a developing agent to be transferred to a print media may be formed, the image carrier drivable through a transfer section wherein the image is transferred to a print media, and a processing unit configured to determine driving information indicating a driving mode of the image carrier for carrying a developing agent, wherein the driving mode includes a mode where additional driving of the image carrier after transferring an image therefrom is performed after an ordinary image form, and control the printer section to further drive the image carrier, after transferring the developing agent onto the print media, by additionally driving the image carrier.

A sheet processing apparatus includes a conveying portion, a first stack portion on which sheets conveyed are stacked, a first regulating portion which regulates a position of a sheet bundle in a crossing direction crossing to the sheet transport direction, a second regulating portion which regulates a position of a sheet bundle in the conveying direction, a first binding portion binding a corner portion of the sheet bundle by a staple, a second binding portion which binds a corner portion of a sheet bundle without a staple, a second stack portion which stacks a sheet bundle discharged from the first stack portion, and a lifting-lowering motor which lifts and lowers the second stack portion. The lifting-lowering motor is located at a downstream, in the conveying direction, of a first binding position where the first binding portion binds a sheet bundle.

An image forming apparatus includes: a transport unit that transports a recording medium having an image formation surface whose height changes from a front end toward a rear end; a transfer unit that transfers an image onto the image formation surface of the recording medium transported by the transport unit by making contact with the image formation surface; and a support unit that supports the recording medium without hindering contact of the transfer unit with the image formation surface and is transported together with the recording medium by the transport unit.

An image forming system includes: an image forming apparatus; an imaging portion that performs imaging of a belonging of a user, the user being adjacent to the image forming apparatus; a belonging analyzer that identifies the belonging by performing analysis on an image obtained by the imaging portion; a memory that stores a user assistance lookup table including the following pieces of information associated one another in advance: a belonging of a user; a user assistance action; and a target member of the image forming apparatus, the target member to be affected by the user assistance action; a searcher that retrieves a user assistance action and target member both associated with the identified belonging by searching the user assistance lookup table for a record associated with the identified belonging; and a hardware processor that makes the image forming apparatus take the user assistance action by the target member.

The purpose of the present invention is to provide a post-processing apparatus capable of performing conveying to and storing at a predetermined stack tray without causing sheet jamming even when a sheet having larger size than a standard size is introduced. The present invention comprises a post-processing apparatus as a processing tray on which sheets conveyed in a predetermined conveyance direction are stacked into a bundle shape, an aligning device which aligns the sheets conveyed to the processing tray, a binding device which performs a binding process on the sheets aligned by the aligning device, and a controller which controls the aligning device so that a sheet is aligned at a position being apart from the binding device by a predetermined distance when the sheet conveyed to the processing tray has a predetermined size or larger.

In accordance with an embodiment, a fixing device comprises a first rotating body; a second rotating body configured to face the first rotating body and be stretched over a plurality of rotating bodies; and a first mechanism configured to enable at least one among a plurality of the rotating bodies to move to change a nip width between the first rotating body and the second rotating body.

An image forming apparatus includes a first image forming section capable of forming a brilliant developer image, a second image forming section including at least one image forming section capable of forming a black developer image, a transfer section capable of transferring the brilliant developer image and the black developer image onto a medium, and a controller that controls operation of the first image forming section and the second image forming section according to received print data. When forming a brilliant image based on the print data, the controller performs control to form the brilliant image in which relative position between the brilliant developer image and the black developer image is changed depending on a medium type.

In accordance with an embodiment, a fixing device comprises a first rotating body; a second rotating body configured to face the first rotating body and be stretched over a plurality of rotating bodies; and a first mechanism configured to enable at least one among a plurality of the rotating bodies to move to change a nip width between the first rotating body and the second rotating body.

A fixing device includes a hardness adjusting unit to adjust hardness of an outer circumferential surface of a fixing belt at a nip. When a sheet to be passed through the nip is an envelope, and the envelope is passed through the nip by side-flap sheet passing for feeding the sheet so that a fold line between an envelope body and a flap extends in a sheet passing direction through the nip, the hardness adjusting unit brings the outer circumferential surface of the fixing belt at the nip during passage of the sheet into a softer state than when the sheet is a plain sheet.

An image forming apparatus includes: a cassette including a first and a second sheet storage areas, arranged side by side, each on which a sheet having a predetermined size is placeable; a sheet feeder configured to feed the sheet from the first area to an image forming portion; a first sheet sensor; a second sheet sensor; a movement member configured to move the sheet from the second area to the first area when no sheet placed on the first area is detected by the first sheet sensor and the sheet placed on the second area is detected by the second sheet sensor; and an annunciator configured to annunciate that a sheet having a size different from the predetermined size is placed on the cassette when the first sheet sensor does not detect the sheet after a completion of a movement of the sheet.