Abstract: With a fixing apparatus, a shape of a folded portion on the side of a pressure roller of a sliding contact sheet is folded along a shape of the pressure roller, thereby uniformizing a longitudinal pressure distribution and preventing an uneven-gloss image due to pressure reduction.

Abstract: An image forming apparatus is configured to be able to switch a target temperature of an image heating member from a standby target temperature during a standby state in which a pressurizing member is separated from the image heating member to a first target temperature or a second target temperature which is lower than the standby and first target temperatures. The image forming apparatus controls a contacting/separating mechanism such that a time from when an image forming signal is input until when the pressurizing member in the standby state contacts the image heating member and forms a nip is shorter in a case when the target temperature of the image heating member is the second target temperature than in a case when the target temperature of the image heating member is the first target temperature.

Abstract: An image heating apparatus includes a rotatable heating member for heating an image on a recording material in a nip; a nip-forming member for forming the nip together with the heating member; a rotatable rubbing member for rubbing the heating member; a temperature sensor for detecting a temperature of the heating member; a moving mechanism for moving the rubbing member from a position where it is spaced from the heating member to a position where it rubs a surface of the heating member; and a controller for executing, by moving the rubbing member to the position where it rubs the surface of the heating member, a rubbing operation such that the rubbing member rubs the surface of the heating member. The controller executes the rubbing operation depending on the temperature detected by the temperature sensor when the recording material passes through the nip.

Abstract: An image heating apparatus includes a heating roller; a belt forming a heating nip; a heating device for heating the heating roller; a controller for controlling a temperature of the heating roller at temperature depending on thickness of sheet; an air feeding device for feeding air to the belt; an executing portion capable of executing an operation in a mode in which the air feeding device feeds the air into between the belt and the heating roller while the belt is spaced from the heating roller with the belt and the heating member being rotating. When a thin sheet is fed following a thick sheet, the executing portion executes the operation in the mode after the thick sheet passes through the nip and before the thin sheet is fed into the nip.

Abstract: An image heating apparatus includes a coil; a heating member; magnetic cores arranged in a widthwise direction of the heating member; a moving mechanism; and a controller. The controller controls, depending on a recording material size, the moving mechanism so that the cores located outside the cores in a set range with respect to the widthwise direction are moved away from the heating member. When the recording material of a size is conveyed to the image heating apparatus, the controller controls the moving mechanism so that the cores, of the cores in the set range, located outside a recording material passing range with respect to the widthwise direction are only the cores located at end portions of the set range with respect to the widthwise direction.

Abstract: An image heating apparatus includes: a coil; a heating member; magnetic cores; a moving mechanism for moving the magnetic cores; a controller; and a temperature sensor, movable in a widthwise direction of the heating member, for detecting a temperature of the heating member. The temperature sensor is controlled so as to be provided at a set position of an end portion of a set range with respect to the widthwise direction. When the temperature detected by the temperature sensor is increased up to a predetermined temperature, the moving mechanism is controlled so that the magnetic core located at the end portion of the set range with respect to the widthwise direction is moved away from the heating member.