An image formation apparatus comprising: a belt member suspended by a plurality of supporting rotating bodies and thus rotating; a cleaning member removing toner adhering to the belt member; a tray receiving waste toner removed from the belt member by the cleaning member; a vibration mechanism vibrating the tray to move the waste toner toward a lower side of the tray; a steering control mechanism to perform movement control to move the belt member in an axial direction of the supporting rotating bodies while the belt member rotates; and a vibration adjustment mechanism to change a manner of vibration of the vibration mechanism, based on the movement control by the steering control mechanism.

A position detection apparatus detects a position of a target in a predetermined direction. One end of a swinging member contacts the target, and the other end contacts a moving member. Sensors are arranged to output signals corresponding to a position of the moving member that corresponds to a position of the moving member. A detection unit detects the position of the target based on the output signals of the sensors. Measured parts are disposed on the moving member along loci of measuring positions of the sensors so that the sum total of the output signals becomes an even number. The detection unit determines that any one of the sensors failed in a case where the sum total of the output signals of the sensors is an odd number.

An image heating apparatus includes rotatable members; a roller; a detector; a displacing mechanism configured to displace one longitudinal end of the roller from a first position to a second position depending on an output of the detector so as to return the endless belt to the predetermined zone; and a timer configured to count a time in which the endless belt is out of the predetermined zone from displacement of the roller to the second position by the displacing mechanism. When the time counted by the timer is a predetermined time, the displacing mechanism displaces the one longitudinal end of the roller to a third position remoter from the first position than the second position so as to return the endless belt is returned to the predetermined zone.

Provided is a belt driving roller for a belt driving device configured to drive and rotate an endless belt with at least one driving roller of a plurality of rollers over which the belt is hung by its internal surface, wherein the belt driving roller includes an electroviscosity retaining member of which surface viscosity force reversibly changes under an effect of an electric field.

A belt rotating device includes: a meandering correction roller that is rotatably supported within a support frame and is one of a plurality of rollers that stretch an endless belt; a supporting portion that is provided at the support frame and supports a rotating shaft of the meandering correction roller so as to be able to incline the rotating shaft of the meandering correction roller in a one direction; a collar member that is provided on the rotating shaft of the meandering correction roller, contacts the side end of the endless belt in which meandering has occurred, and moves in an axial direction; and an inclination guide portion that is supported by the support frame and has an inclined surface downward and inclined with respect to the shaft of the meandering correction roller, in a position in which the contact portion of the collar member contacts the inclination guide portion.

An ITM module for an imaging device, including a frame; a tension roll disposed in the frame; an ITM belt rotatably coupled to the frame and formed as an endless loop around rolls of the ITM module, including the tension roll; and an adjustment mechanism coupled to an end portion of the frame and to the tension roll, the adjustment mechanism setting an amount of skew of the tension roll relative to the frame. The amount of skew is in a direction that is substantially orthogonal to a process direction of the ITM belt. The adjustment mechanism includes a cam member rotatably coupled to the frame and having a cam surface coupled a first end portion of the tension roll such that rotating the first cam member sets an amount of elevation of the first end portion of the tension roll relative to the frame.

An image forming apparatus includes an image bearing member, a first belt, a driving roller, a first driving source, an inner roller, a second belt, a transfer roller for nipping the first belt and the second belt and for transferring a toner image from the first belt onto the recording material, a downstream roller provided to contact an inner peripheral surface of the second belt on a side downstream of the transfer roller with respect to a recording material conveying direction and for forming a surface, on which the recording material is conveyed, between itself and the transfer roller, and a second driving source for rotationally driving the downstream roller. During transfer in which the toner image is transferred onto the recording material, a surface speed of the downstream roller is set to become higher than an inner peripheral surface speed of the second belt.

An image forming apparatus includes: an image forming unit; a conveying unit; a fixing unit including a heater and a temperature detector; and a controller. The controller is configured to execute: first conveying processing of controlling the conveying unit to start conveying the sheet after a first time period has elapsed since the temperature detected by the temperature detector reaches a first temperature, second conveying processing of controlling the conveying unit to start conveying the sheet in response to the temperature reaches the first temperature, third conveying processing of controlling the conveying unit to start conveying the sheet in response to the temperature reaches a second temperature that is lower than the first temperature, and determination processing of determining, according to a plurality of printing conditions, which of the first conveying processing, the second conveying processing, and the third conveying processing is to be executed.

A biasing force adjusting device includes a roller, a roller holder, a first biasing member, and a second biasing member. The roller faces a mover. The roller holder holds the roller and is displaceable with respect to the mover. The first biasing member applies a first biasing force to the roller holder to press the roller against the mover. The second biasing member applies a second biasing force greater than the first biasing force to the roller holder to press the roller against the mover.