In an example of the disclosure, a blanket servicing system includes a rotatably mounted endless cleaning surface and a scraper. The endless cleaning surface is to have a first engagement with a blanket to obtain a layer of thermoplastic print agent from the blanket. The endless cleaning surface is to have a second engagement with the blanket to receive residue from the blanket onto the layer of thermoplastic print agent. The scraper is to scrape the endless cleaning surface to transfer the residue from the endless cleaning surface to a collection element.

A device for removing toner attached to a transfer roller in an image forming apparatus is disclosed. The device includes a bar brush to contact an outer circumferential surface of the transfer roller, where the bar brush extends along a part of a longitudinal length of the transfer roller. The device includes an elongated cleaning member to contact the outer circumferential surface of the transfer roller, where the elongated cleaning member extends along the longitudinal length, entirely, of the transfer roller.

An image forming apparatus includes an image carrier, an exposure device, a developing device, a primary transfer device, a secondary transfer device, and a control unit. The exposure device exposes the image carrier to form an electrostatic latent image on the image carrier. The developing device forms a toner image by developing the electrostatic latent image using toner. The primary transfer device primarily transfers the toner image to a transfer body. The secondary transfer device applies a transfer bias to secondarily transfer the toner image to a recording medium. The control unit applies a cleaning bias to the secondary transfer device to remove residual toner after the secondary transfer. When the control unit determines that the toner image based on the exposed electrostatic latent image is not secondarily transferred at a predetermined timing, the first cleaning processing is performed until the subsequent processing is started.

An image forming apparatus comprises a plurality of sheet detection units, provided at different positions along a sheet width direction, configured to detect the sheet conveyed on a conveyance path. A controller determines, by using the plurality of sheet detection units, a presence or absence of a sheet being conveyed in each of a plurality of regions sectioned in the sheet width direction, and determines, based on input image data, a presence or absence of an image to be formed in each of the plurality of regions. The controller further determines, based on the above determination results, whether or not the image to be formed on the sheet being conveyed is to be formed with a deviation from the sheet, and controls an image forming operation in accordance with this determination result.

A device for removing toner attached to a transfer roller in an image forming apparatus is disclosed. The device includes a bar brush to contact an outer circumferential surface of the transfer roller, where the bar brush extends along a part of a longitudinal length of the transfer roller. The device includes an elongated cleaning member to contact the outer circumferential surface of the transfer roller, where the elongated cleaning member extends along the longitudinal length, entirely, of the transfer roller.

An image forming apparatus includes a photosensitive drum, a charging roller, a transfer roller, and a control circuit. The control circuit is configured to perform an alternating bias control. During the alternating bias control, the control circuit causes the charging roller and the transfer roller to rotate in accordance with a rotation of the photosensitive drum, and controls the charging roller to alternately turn off and on to a first bias of a predetermined polarity and the transfer roller to alternately turn off and on to a second bias of the predetermined polarity, such that at least a part of a region of the photosensitive drum biased by the first bias is not biased by the second bias, and that at least a part of a region of the photosensitive drum biased by the second bias is not biased by the first bias.

An image forming apparatus includes an image carrier, an exposure device, a developing device, a primary transfer device, a secondary transfer device, and a control unit. The exposure device exposes the image carrier to form an electrostatic latent image on the image carrier. The developing device forms a toner image by developing the electrostatic latent image using toner. The primary transfer device primarily transfers the toner image to a transfer body. The secondary transfer device applies a transfer bias to secondarily transfer the toner image to a recording medium. The control unit applies a cleaning bias to the secondary transfer device to remove residual toner after the secondary transfer. When the control unit determines that the toner image based on the exposed electrostatic latent image is not secondarily transferred at a predetermined timing, the first cleaning processing is performed until the subsequent processing is started.

An image forming apparatus includes an image carrier, an exposure device, a developing device, a primary transfer device, a secondary transfer device, and a control unit. The exposure device exposes the image carrier to form an electrostatic latent image on the image carrier. The developing device forms a toner image by developing the electrostatic latent image using toner. The primary transfer device primarily transfers the toner image to a transfer body. The secondary transfer device applies a transfer bias to secondarily transfer the toner image to a recording medium. The control unit applies a cleaning bias to the secondary transfer device to remove residual toner after the secondary transfer. When the control unit determines that the toner image based on the exposed electrostatic latent image is not secondarily transferred at a predetermined timing, the first cleaning processing is performed until the subsequent processing is started.

A cleaning device for a rotational body is provided. The cleaning device includes a scraping portion whose edge is pressed against a rotational body to which toner adheres. The scraping portion scrapes the toner off the rotational body. The cleaning device also includes a guide portion that guides a recording medium toward the rotational body, and a guide support portion that supports the guide portion. The guide support portion is disposed at a position separated from the scraping portion in a state in which the guide support portion is pressed by the guide portion that is guiding the recording medium.

A cleaning device includes a cleaning unit, a movement mechanism, and a positioning portion. The cleaning unit includes a cleaning part that has a contact surface extending along an axial direction of a conveyance roller and cleans the conveyance roller, and a cleaning housing that supports the cleaning part. The movement mechanism moves the cleaning unit between a cleaning position and a mounting and removing position. The movement mechanism allows the cleaning part to be brought into contact with the conveyance roller at the cleaning position, allows the cleaning part to be disposed below the conveyance roller in a separated manner at the mounting and removing position and allows the cleaning unit to be mounted on or removed from the apparatus body. The positioning portion restricts a relative position between the cleaning part and the conveyance roller by being brought into contact with the cleaning unit.