An image forming apparatus includes a drive source, an object configured to be driven by the drive source, and a drive transmission mechanism including a driving member, a driven member, an intermediate member, an urging member, and an actuating portion. The intermediate member is configured to move in an axial direction. The intermediate member includes a shaft portion extending in the axial direction, and a positioning portion configured to determine a position of the driven member in a direction orthogonal to the axis. The shaft portion includes a receiving portion configured to receive a force. The receiving portion is positioned inward of the positioning portion in a radial direction of rotation of the intermediate member.

A unit includes: a developing device configured to develop an electrostatic charge image that is formed on a surface of an image carrier, as a toner image with a developer including a flat toner containing a flat pigment, the developer being accommodated in the developing device; and a transfer device including an intermediate transfer belt onto which the toner image formed on the surface of the image carrier is primarily transferred, a primary transfer device configured to primarily transfer the toner image formed on the surface of the image carrier to a surface of the intermediate transfer belt, and a secondary transfer device configured to secondarily transfer the toner image on the surface of the intermediate transfer belt to a surface of a recording medium, wherein the intermediate transfer belt contains a resin and conductive carbon particles, and after the flat toner adheres to an outer circumferential surface of the intermediate transfer belt in a loading amount of 3 g/cm.sup.2, in a case where air is blown to the outer circumferential surface from an upper side of the outer circumferential surface while increasing a blowing pressure, all the flat toner adhering to the outer circumferential surface is separated from the outer circumferential surface at a blowing pressure of 25 kPa or less.

A toner conveying device for conveying toner, comprising: a first conveying portion; and a second conveying portion conveying the toner conveyed from the first conveying portion. The first conveying portion further includes: a first screw which includes a first rotation shaft and a first blade portion, the first screw including an engaging portion and a first protruded portion on a first end portion; and a first conveying passage forming member having a first inner wall face which forms a first conveying passage. The second conveying portion includes: a second screw which includes a second rotation shaft and a second blade portion, the second screw including an engaged portion and a second protruded portion on a second end portion; and a second conveying passage forming member having a second inner wall face which forms a second conveying passage, and which is connected with the first conveying passage forming member.

An image forming apparatus includes an image bearing member, a transfer member, a moving portion, a driving portion, a voltage applying portion, a first detecting portion, and a second detecting portion. On the basis of a detection result of the first detecting portion when a first test voltage is applied to the transfer member by the voltage applying portion, the second detecting portion sets a second test voltage. The second detecting portion detects a position of the transfer member on the basis of a detection result of a current value by the first detecting portion acquired when the second test voltage is applied to the transfer member by the voltage applying portion.

An image forming apparatus includes: a paper feeding part that houses a medium to be fed; a belt-shaped image holding part that holds an image on a surface of the image holding part and rotates; a transfer part disposed to face the image holding part and transfers an image onto a medium from the image holding part in a final transfer region; and a cleaning part that removes a deposit on the surface of the image holding part passed through the final transfer region, in which a downstream side of the paper feeding part in a transport direction of a medium is inclined to be closer than an upstream side of the paper feeding part to the final transfer region, and the image holding part is inclined upward on a downstream side of the final transfer region toward the downstream side in a rotation of the image holding part.

A transport device includes a rotating body including a recessed portion on an outer surface, a rotatable heat unit that is in contact with the outer surface of the rotating body and forms an interposition region in which a recording medium is interposed between the heat unit and the rotating body, a transport unit that: (i) includes a hold member capable of holding a portion of the recording medium near a leading edge, (ii) transports the recording medium by moving the hold member in a rotational direction of the rotating body with the hold member contained in the recessed portion, and (iii) causes the hold member to pass through the interposition region, and a controller that controls rotation of the rotating body such that the recessed portion stops at a position upstream or downstream of the interposition region in the rotational direction when an anomaly is detected.

An image forming apparatus controls the number of rotations of a photosensitive drum based on information related to the use of the photosensitive drum and a suspension time in a rotation operation of rotating the photosensitive drum after a lapse of the suspension time between a first image forming operation of forming an image on a transfer material and a second image forming operation performed after the first image forming operation.

A toner is provided. The toner comprises a maleic-acid-modified polyolefin having a polypropylene block in a main chain and having a weight average molecular weight of 60,000 or more.

An image forming apparatus includes a plurality of image bearing members, a transfer unit including an intermediate transfer belt, a plurality of transferring members which sandwich the intermediate transfer belt between the plurality of image bearing members and themselves, a biasing member which biases each of the plurality of transferring members toward the plurality of image bearing members via the intermediate transfer belt, and a frame which supports the intermediate transfer belt, the plurality of transferring members, and the biasing member, and an apparatus main body which supports the plurality of image bearing members and the transfer unit. The apparatus main body includes a supporting portion which supports the transfer unit and a biasing force receiving portion of which a position is between the plurality of transferring members in a moving direction of the surface of the intermediate transfer belt and which is capable of supporting the transfer unit.

An image forming apparatus includes: a toner image former that forms a toner image on an outer peripheral surface of a photosensitive rotating body and that transfers the toner image having been formed onto a transfer receiving object; a detector that detects a grayscale abnormality of the toner image on the photosensitive rotating body or the transfer receiving object; a cleaner that cleans the outer peripheral surface of the photosensitive rotating body; and a hardware processor that causes the cleaner to clean when the detector detects the grayscale abnormality at a same position in a main scanning direction per circumferential length of the photosensitive rotating body in a sub-scanning direction.