A fixing device includes a roller, an apparatus frame, a connector and a heating unit having a film having a tubular shape, a heater, a heater holder disposed in an internal space of the film, and a unit holder disposed at a position at which the unit holder faces an end surface of the film in a longitudinal direction of the film. The connector includes an engagement portion configured to engage with a to-be-engaged portion of the unit holder in such a manner as to restrict the connector from becoming detached when a force in a direction in which the connector is detached is applied to the connector in a state in which the connector is electrically connected to the heater. The unit holder includes an abutment portion with which the heater holder comes into contact when a force in a direction toward the roller is applied to the connector.

An image forming apparatus includes a pressing mechanism, a body, and a cover. The pressing mechanism includes a pressure lever rotatable about a first shaft, a pressure release lever rotatable about a second shaft, and an elastic body coupling the levers. The pressure lever presses a pressing body against a pressed body. The pressure release lever moves between a holding position to cause the pressure lever to press the pressing body against the pressed body and a release position to cause the pressure lever to release the pressing body from the pressed body. The cover includes a pressing portion to move the pressure release lever from the release position to the holding position in response to a closing operation to close the cover. The pressing portion has an inclined portion contacting and guiding the pressure release lever to restrict an inclination of the second shaft relative to a horizontal direction.

A fixation device according to an embodiment may include: an annular belt; flange members facing both ends of the annular belt, respectively, each including: a flange portion that regulates an end portion of the annular belt; and a support surface that supports an inner circumferential surface of the annular belt; a cleaning roller in contact with an outer circumferential surface of the annular belt; and an opposing member provided between the flange members and facing the cleaning roller with the annular belt therebetween in a region where the annular belt and the cleaning roller are in contact with each other. In a view along an axial direction of the cleaning roller, a first distance from an axial center of the cleaning roller to the opposing member is equal to or greater than a second distance from the axial center of the cleaning roller to the support surface.

A fixing device includes a fixing rotator to fix an unfixed image on a recording medium, a pressure member disposed opposite the fixing rotator to press an outer circumferential surface of the fixing rotator; a heating source disposed inside an inner circumferential surface of the fixing rotator to heat the fixing rotator, and a composite member disposed inside the inner circumferential surface. The composite member includes a first member, a second member attached to the first member, and an inspection region for measurement of glossiness. The first member and the second member have a difference in glossiness. The inspection region allows identification of which one of the first member and the second member is present on a surface of the inspection region based on the glossiness of the inspection region, and determination of that the fixing device has a desired fixing configuration based on a result of the identification.

An image forming apparatus includes an image forming unit, a fixing unit, an open/close member, and a notification unit, wherein the fixing unit is movable by a user's operation between a first position where image forming is performed and a second position different from the first position, in a state where the open/close member is opened, wherein in a case where a paper jam occurs during the image forming, the notification unit notifies the user to open the open/close member and remove a recording medium, and wherein in a case where the user moves the fixing unit from the first position to the second position or the image forming apparatus detects a start of moving the fixing unit to the second position after the user is notified, the notification unit notifies the user to remove the recording medium after returning the fixing unit to the first position.

There is provided an image forming apparatus including: a second duct unit including a second intake port that sucks air between a fixing unit and a transfer unit, a second exhaust port that exhausts air sucked from the second intake port to the outside, and a second duct that forms a second ventilation passage between the second intake port and the second exhaust port; a second duct fan that is provided in the second ventilation passage and generates an air flow from the second intake port toward the second exhaust port; a filter that is provided in the second ventilation passage and removes fine particles; and a control unit that controls operations of a first duct fan and the second duct fan, in which, in a case where a continuous job is started, the control unit starts the operation of the first duct fan when a conveyance distance of a recording material passing through a fixing nip portion reaches a first predetermined value.

An image forming device comprises a fixing device that switches between a pressing state and a pressure-released state of a pressing member with respect to a rotatable fixing member by means of a switching member; and a first access member that covers the fixing device when the first access member is in a closed state, and exposes the fixing device when the first access member is in an opened state, wherein the fixing device includes a second access member that covers a component in a fixing device body when the second access member is in a closed state, and covers the component when the second access member is in an opened state, when closed from the opened state, the first access member activates the switching member to set the pressing member to the pressing state from the pressure-released state, and when opened from the closed state, the second access member activates the switching member to set the pressing member to the pressure-released state from the pressing state.

An image forming apparatus that includes an apparatus main body, a controller, a storage, and a sheet feeding tray is provided. A fixing device that thermally fixes a toner image on a sheet is detachably mounted on the apparatus main body. The controller performs authentication of a user using the image forming apparatus. The storage stores user information indicating of a permission to perform replacement work of the fixing device by the user. The controller further determines whether the replacement work of the fixing device is permitted when a width of the sheet is changed, inquires the user whether to perform the replacement of the fixing device based on one or more determination results, and determines the permission based on the user information at a time of usage by the authenticated user.

A fixing device includes a roller, an apparatus frame, a connector and a heating unit having a film having a tubular shape, a heater, a heater holder disposed in an internal space of the film, and a unit holder disposed at a position at which the unit holder faces an end surface of the film in a longitudinal direction of the film. The connector includes an engagement portion configured to engage with a to-be-engaged portion of the unit holder in such a manner as to restrict the connector from becoming detached when a force in a direction in which the connector is detached is applied to the connector in a state in which the connector is electrically connected to the heater. The unit holder includes an abutment portion with which the heater holder comes into contact when a force in a direction toward the roller is applied to the connector.

An image forming apparatus includes an apparatus body including an opening portion, an detachable unit, a door, and a holding member including a first end portion connected to the apparatus body and a second end portion connected to the door, the holding member being configured to move together with the door and to hold the door positioned at the open position. The holding member is movable from a first position to a second position in a state where the door is positioned at the open position, the first position being a position at which the holding member overlaps with an attachment-and-detachment trajectory of the detachable unit, the second position being a position at which the holding member does not overlap with the attachment-and-detachment trajectory of the detachable unit and allows the detachable unit to be attached to and detached from the apparatus body.