In one example, a device comprises an image transfer member, a platen to form a first nip with the image transfer member, a photo imaging plate to form a second nip with the image transfer member, and a controller to determine first information relating to a characteristic of the first nip, and to determine second information for use in adjusting a relative position of the photo imaging plate and the image transfer member on the basis of the first information.

An imaging apparatus includes a transfer belt, a transfer roller, a conductive roller, and a power source. The transfer roller includes a metal shaft electrically floating during an imaging operation. The conductive device has an electrical resistance lower than an electrical resistance of the transfer roller. The power source is electrically connected to the conductive device, and the power source includes a first supply path to supply a first electrical bias to the conductive device during an imaging operation and a second supply path to supply a second electrical bias to the transfer roller during a cleaning operation.

An image forming apparatus includes a receiving portion to receive an image forming job signal for forming an image on a recording material, an image forming portion to form the image based on the received image forming job signal, and an image heating portion to heat the image, formed on the recording material by the image forming portion, in a nip where the recording material is nipped and fed. An inputting portion inputs a waiting time, and a controller performs an operation in an image forming mode so an image forming operation is not performed until a lapse of the input waiting time from the reception of the image forming job signal, and then the image forming operation is started based on the lapse of the waiting time in a stand-by state in which the image forming apparatus waits for reception of the image forming job signal.

An image forming apparatus includes: a rotating body having a recess in an outer peripheral surface thereof; a sprocket provided coaxially with the rotating body to rotate integrally with the rotating body; a chain having plural links, the chain being wound around the sprocket to circulate in a circulating direction so as to shift from a rotary movement in which the chain rotates in an arc shape conforming to an outer periphery of the sprocket along with the sprocket, to a linear movement; a holder fixed to at least one link of the links of the chain, the holder being configured to hold a leading end portion of a recording medium, the holder being configured to transport the recording medium by performing the rotary movement along with the rotating body and the chain in a state of (i) holding the leading end portion of the recording medium placed on the outer peripheral surface of the rotating body and (ii) being located in the recess, and then shifting to the linear movement along with the chain; and an image forming unit configured to form an image on the recording medium placed on the outer peripheral surface of the rotating body, in which a holding position where the holder holds the recording medium is arranged downstream of an upstream roller of rollers of a most downstream link in the circulating direction among the at least one link to which the holder is fixed.

An image forming apparatus includes: a rotating body having a recess in an outer peripheral surface thereof; a transfer portion that is in contact with the outer peripheral surface of the rotating body, the transfer portion being configured to transfer a toner to a recording medium passing between the rotating body and the transfer portion; and a brush configured to come into contact with the outer peripheral surface of the rotating body to remove a toner adhering to the outer peripheral surface.

An image forming apparatus includes a rotating body that regulates a movement of a transfer roller in a direction along a rotating shaft of the transfer roller. The rotating body includes a first portion located at a first distance from the rotating shaft of the transfer roller in a direction intersecting the rotating shaft of the transfer roller and a second portion located at a second distance that is nearer than the first distance. The rotating body takes a first position for supporting the transfer roller in a separating position by making the first portion abut on the cover in a state where the side cover is closed. The rotating body takes a second position where the second portion is directed to the cover and the transfer roller is in an abutting position in a state where the side cover is closed.

An image forming apparatus includes a main body, a drum cartridge removably attached to the main body, and a belt unit removably attached to the main body. The main body includes a drum power supply, a belt power supply, and a controller configured to start supplying power from the drum power supply to a drum memory of the drum cartridge, start supplying power from the belt power supply to a belt memory of the belt unit, stop supplying the power from the drum power supply to the drum memory after starting supplying the power from the drum power supply to the drum memory, and stop supplying the power from the belt power supply to the belt memory after starting supplying the power from the belt power supply to the belt memory.

In one example, a device comprises an image transfer member, a platen to form a first nip with the image transfer member, a photo imaging plate to form a second nip with the image transfer member, and a controller to determine first information relating to a characteristic of the first nip, and to determine second information for use in adjusting a relative position of the photo imaging plate and the image transfer member on the basis of the first information.

A controller is configured to execute a larger gamut technology mode in which the controller performs image formation by controlling a ratio of a rotation speed of a development roller to a rotation speed of a photosensitive drum such that the ratio becomes a second speed ratio higher than a first speed ratio in a normal mode. The controller is configured to, when the controller executes the larger gamut technology mode, control transfer voltage based on a humidity around an image forming apparatus.

An image forming apparatus includes an image bearing member, a transfer member, a voltage source, a current detecting portion, a controller, and a receiving portion. During the recording material passing through the transfer portion, the controller controls a voltage applied to a transfer member on the basis of a detection result of the current detecting portion so that a current flowing through the transfer member falls within a predetermined range. The controller sets at least one of an upper limit and a lower limit of the predetermined range on the basis of a predetermined voltage changing instruction received by the receiving portion.