A tilted surface is provided in a heating unit and is tilted with respect to a first direction. A movable member includes a roller and is movable along the first direction. A first direction movement mechanism causes the movable member to move along the first direction in an interlocking manner with a movement of an operation member. When the movable member moves in an interlocking manner with the movement of the operation member in a first operation direction, the roller rolls on the tilted surface to cause the heating unit to move toward a second side against a bias force of a bias member. When the movable member moves in the interlocking manner with the movement of the operation member in a second operation direction, the roller rolls on the tilted surface, and the bias member causes the heating unit to move toward a first side.

A fixation device according to an embodiment includes: a belt member extending in a first direction; a cleaning member extending in the first direction and in contact with the belt member to clean the belt member; an opposing member extending in the first direction, and opposed to the cleaning member in a second direction across the belt member, to form a nip portion with the cleaning member; and a support member supporting the opposing member. The opposing member is configured, when the opposing member and the support member are removed from the fixation device, to be supported by the support member such that the opposing member is restricted from moving in the first direction and is movable in the second direction relative to the support member.

A fixing device is installable into a main housing of an image forming apparatus and includes a heating rotator, a pressure rotator, a first temperature sensor, a second temperature sensor, an external connector, an intermediate circuit board, a first side frame, a second side frame, and a connecting frame. The heating rotator includes a heater. The pressure rotator nips a sheet in combination with the heating rotator. The external connector is connectable to a main housing connector of the main housing. The intermediate circuit board is configured to relay signals from the first temperature sensor and the second temperature sensor to the external connector. The connecting frame connects the first side frame and the second side frame. The connecting frame is made of metal and is connected to a ground of the main housing. The ground of the intermediate circuit board is electrically continuous with the connecting frame.

An image forming apparatus includes an attachment section to which a first fixing unit that performs a fixing operation of fixing an image on a recording material by using power from an alternating current power supply and a second fixing unit that performs the fixing operation by using power from a direct current power supply are attached, an alternating current power supply section that receives the power supplied from the alternating current power supply, and a direct current power supply section that receives the power supplied from the direct current power supply, in which the attachment of the first fixing unit to the attachment section and the supply of the power from the direct current power supply to the direct current power supply section are not executable simultaneously, and the attachment of the second fixing unit to the attachment section and the supply of the power from the alternating current power supply to the alternating current power supply section are not executable simultaneously.

An image forming apparatus includes an apparatus main body having an opening portion, an opening and closing member supported to open/close relative to the apparatus main body; a fixing unit detachably supported with respect to the apparatus main body via the opening portion, including a heating unit and a pressure roller forming a fixing nip and a pair of conveyance rotation members having a conveyance nip, including a urging portion for urging the fixing unit toward a second position from a first position. In a case where the sheet is jammed while being caught in the fixing nip and the conveyance nip, and in a case where urging force of the urging portion acts on the sheet, a tensile force acting on the sheet is less than a binding force of the fixing nip and the conveyance nip.

A print apparatus includes a toner image forming portion to form a toner image on a print medium, a fuser to fuse the toner image onto the print medium, and an air blower. duct guides cooling air from the blower to the fuser. The duct includes an outer wall, an inlet formed in the outer wall facing the blower, and an outlet facing the fuser. A slider may be slidable in a width direction of the print medium so as to adjust an opening amount of the outlet. A flexible guide member is provided to guide the cooling air from the inlet of the duct to the outlet. An outlet side end portion of the flexible guide member is connected to an end portion of the slider and an inlet side end portion thereof is slidably supported on the outer wall of the duct.

A removable unit includes a heater, an exterior housing and a grip. The exterior housing is made of metal and houses the heater. The grip is made of a material having a lower thermal conductivity than the metal. The grip is exposed on a part of an outer face of the exterior housing.