Abstract: An image forming apparatus includes an apparatus body, a rotatable first rotary member, a rotatable second rotary member, a casing, a sheet discharge port, an opening and closing member, a duct, and a fan. The casing is provided within the apparatus body and storing the first and second rotary members. The sheet discharge port discharges the recording material that has passed through the nip portion out of the casing. The opening and closing member has the sheet discharge port and opens a conveyance path of the recording material from the nip portion to the sheet discharge port. The fan suctions air from the suction port through the duct. The duct is provided on the opening and closing member and comprises a suction port to suction air from the conveyance path. The suction port is provided on the same side as the first rotary member with respect to the conveyance path.

Abstract: A fixing device is disclosed that has a heating rotating member configured to be rotatable and to heat the unfixed toner image; a pressing rotating member configured to be rotatable and to form a fixing nip portion by coming in contact with the heating rotating member; and a separating member configured to separate the recording material having passed through the fixing nip portion from the heating rotating member, the separating member being provided downstream of the fixing nip portion in a conveying direction of the recording material to be opposed to the heating rotating member with a gap in a non-contact state, wherein the pressing rotating member comes in contact with the heating rotating member to form the fixing nip portion that nips and conveys the recording material with a first pressure or a second pressure that is lower than the first pressure, and wherein the separating member moves more downstream in the conveying direction when the pressure of the fixing nip portion is the second pressure than

Abstract: A fixing apparatus includes a belt, a rotary member, a pad member, and a slide member. A distance in the conveyance direction between a first position and a second position is 3.0 mm or less. The first position is a downstream edge of a tip of a projection positioned most downstream in a direction of rotation of the belt. The second position is an upstream edge, in the direction of rotation of the belt, of the guide portion that contacts with the inner circumference surface of the belt. A distance in the pressing direction between a third position and a fourth position is 0.4 mm or more and 2.0 mm or less. The third position is the tip of the projection positioned most downstream in the direction of rotation of the belt. The fourth position is the same position as the second position.

Abstract: A fixing device includes a heating rotating member and a pressure rotating member and performs image formation in one mode out of a plurality of modes including a first mode and a second mode. A time during which one of the heating rotating member and the pressure rotating member moves between an abutment position and a separation position in a case where the image formation is performed in the first mode is a first time, a time during which the one moves between the abutment position and the separation position in a case where the image formation is performed in the second mode is a second time, and the first time is shorter than the second time.

Abstract: A fixing device includes first and second rotary members to form a nip portion, a heating unit, a frame, a bearing member, a moving mechanism, and a restricting member. At the nip portion, the first and second rotary members apply heat and pressure to fix a toner image to a recording material. The moving mechanism moves the second rotary member between a contact position where the first and second rotary members contact to form the nip portion and a separated position where the first and second rotary members are separated from each other. The restricting member includes a restricting portion to restrict the movement of the second rotary member toward the first rotary member. When the first rotary member is supported by the frame and the second rotary member is at the separated position, the restricting member is attachable and detachable between the bearing member and the frame.

Abstract: A fixing device includes an endless belt, a stretching roller, a stretching member, a pressing member, a rubbing member, a moving unit configured to move the rubbing member between a first position at which the rubbing member is separated from the outer peripheral surface of the belt and a second position at which the rubbing member is in contact with the outer peripheral surface of the belt, and a steering roller. In a case where the rubbing member is located at the second position, a region of the belt rubbed by the rubbing member is sandwiched between the stretching roller and the rubbing member. In a case where the rubbing member is located at the first position, the region of the belt rubbed by the rubbing member is separated from the stretching roller and the rubbing member.

Abstract: A fixing apparatus includes a belt, a rotary member, a pad member, and a slide member. A distance in the conveyance direction between a first position and a second position is 3.0 mm or less. The first position is a downstream edge of a tip of a projection positioned most downstream in a direction of rotation of the belt. The second position is an upstream edge, in the direction of rotation of the belt, of the guide portion that contacts with the inner circumference surface of the belt. A distance in the pressing direction between a third position and a fourth position is 0.4 mm or more and 2.0 mm or less. The third position is the tip of the projection positioned most downstream in the direction of rotation of the belt. The fourth position is the same position as the second position.

Abstract: A fixing device includes a heating unit, a pressure unit, a first frame, an urging member, a support member, and a fixing member. The heating unit heats toner carried by a recording medium. The pressure unit pressurizes the heating unit to form a nip portion with the heating unit and fixes a toner image onto the recording medium at the nip portion with the heating unit. The first frame moves to a first position where the heating unit is exposed and moves to a second position where the heating unit is covered. The urging member urges the heating unit to position the heating unit. The support member supports one end of the urging member and the fixing member fixes the support member to the fixing device.

Abstract: A fixing device includes a heating rotating member and a pressure rotating member and performs image formation in one mode out of a plurality of modes including a first mode and a second mode. A time during which one of the heating rotating member and the pressure rotating member moves between an abutment position and a separation position in a case where the image formation is performed in the first mode is a first time, a time during which the one moves between the abutment position and the separation position in a case where the image formation is performed in the second mode is a second time, and the first time is shorter than the second time.

Abstract: A fixing apparatus includes a belt, a steering roller, a slide member, and a pressing rotation member that forms a nip portion by pressing the belt and is disposed to face the slide member. The belt applies heat to a recording material and has an inner circumferential surface that receives a lubricant applied onto the inner circumferential surface. The pressing rotation member fixes a toner image onto the recording material by applying heat and pressure to an unfixed toner image in the nip portion, in cooperation with the belt. An end portion of the belt on one end side in a belt width direction takes a position outside an end portion of the slide member on the one end side and a position inside the end portion of the slide member on the one end side while the steering roller is in operation.

Abstract: A fixing apparatus includes a fixing belt that is rotatable and endless, a pad, a pressing rotary member, and a scraping member. The pad contacts an inner circumferential surface of the fixing belt. The pressing rotary member contacts the pad via the fixing belt to form a nip portion. In cooperation with the fixing belt, the pressing rotary member fixes a toner image to a recording material by applying heat and pressure to the recording material at the nip portion. A lubricant is applied to the inner circumferential surface of the fixing belt. The scraping member includes an inclined portion inclined downward toward an outer side of the fixing belt and contacting an edge portion of the fixing belt to scrape the lubricant. The inclined portion is in contact with the edge portion of the fixing belt in an area where an outer surface of the fixing belt faces upward.

Abstract: A fixing device includes an endless belt member, a rotary member, a nip portion forming member and a steering roller. The steering roller is disposed inside the belt member and configured to be swung to control a position of the belt member in a width direction of the belt member. The steering roller includes a lubricant impregnated portion impregnated with a lubricant and contacting an inner peripheral surface of the belt member.

Abstract: A fixing apparatus includes a belt, a steering roller, a slide member, and a pressing rotation member that forms a nip portion by pressing the belt and is disposed to face the slide member. The belt applies heat to a recording material and has an inner circumferential surface that receives a lubricant applied onto the inner circumferential surface. The pressing rotation member fixes a toner image onto the recording material by applying heat and pressure to an unfixed toner image in the nip portion, in cooperation with the belt. An end portion of the belt on one end side in a belt width direction takes a position outside an end portion of the slide member on the one end side and a position inside the end portion of the slide member on the one end side while the steering roller is in operation.

Abstract: An image forming apparatus includes an image forming portion, a fixing device detachably mounted on a main assembly of the image forming apparatus and a moving mechanism. The fixing device includes a detecting flag contacting a back surface of the recording material. The detecting flag is positioned in a first position within a conveyance path when the recording material does not exist on the detecting flag and moves in a direction toward the back surface from a front surface relative to the first position when the recording material exists on the detecting flag. The moving mechanism causes the detecting flag to move so as to position the detecting flag in the first position when the fixing device is mounted on the main assembly and in a retracted position when the fixing device is demounted from the main assembly.

Abstract: A fixing device includes first and second rotary members to form a nip portion, a heating unit, a frame, a bearing member, a moving mechanism, and a restricting member. At the nip portion, the first and second rotary members apply heat and pressure to fix a toner image to a recording material. The moving mechanism moves the second rotary member between a contact position where the first and second rotary members contact to form the nip portion and a separated position where the first and second rotary members are separated from each other. The restricting member includes a restricting portion to restrict the movement of the second rotary member toward the first rotary member. When the first rotary member is supported by the frame and the second rotary member is at the separated position, the restricting member is attachable and detachable between the bearing member and the frame.

Abstract: A fixing apparatus includes a fixing belt, a slide member, an opposing member, and a retaining member. The retaining member includes, in a groove portion, a bottom surface portion that is in contact with an opposite surface of the slide member from a slide surface, a side surface portion that is formed on a downstream side of the groove portion in a conveyance direction and intersecting the bottom surface portion, and a continuous portion that is formed between the bottom surface portion and the side surface portion. The slide member includes an abutment portion configured to abut against the side surface portion at a position downstream from a downstream edge of the opposite surface when the slide member is slidden against the fixing belt such that the downstream edge of the opposite surface is positioned upstream from the continuous portion in the conveyance direction.

Abstract: An image forming apparatus includes an image forming unit, first and second rotary members, a cleaning mechanism, and a separating mechanism. The first and second rotary members cooperatively form a nip portion configured to nip and convey the recording material while heating and fixing the tonner image onto the recording material. The cleaning mechanism includes a collecting roller. The cleaning mechanism is configured to clean the first rotary member by bringing the cleaning web into contact with the collecting roller that is in contact with the first rotary member and rotates together with the first rotary member. The separating mechanism is configured to separate the cleaning web from the collecting roller when the collecting roller is separated from the first rotary member.

Abstract: An image heating apparatus includes a first rotary member and a second rotary member that form a nip portion, and, a changing mechanism configured to change a pressing force applied at the nip portion. The changing mechanism includes a worm having both ends supported rotatably, a worm wheel that is meshed with the worm and to which a driving force from the worm is transmitted, a rotatable shaft to which the worm wheel is attached, a cam that is attached to the shaft, and, a displacement mechanism that is abutted against the cam and that is configured to displace the second rotary member with respect to the first rotary member along with a rotation of the cam.

Abstract: A fixing device includes a heating rotating member and a pressure rotating member and performs image formation in one mode out of a plurality of modes including a first mode and a second mode. A time during which one of the heating rotating member and the pressure rotating member moves between an abutment position and a separation position in a case where the image formation is performed in the first mode is a first time, a time during which the one moves between the abutment position and the separation position in a case where the image formation is performed in the second mode is a second time, and the first time is shorter than the second time.

Abstract: A fixing apparatus includes a fixing belt, a slide member, an opposing member, and a retaining member. The retaining member includes, in a groove portion, a bottom surface portion that is in contact with an opposite surface of the slide member from a slide surface, a side surface portion that is formed on a downstream side of the groove portion in a conveyance direction and intersecting the bottom surface portion, and a continuous portion that is formed between the bottom surface portion and the side surface portion. The slide member includes an abutment portion configured to abut against the side surface portion at a position downstream from a downstream edge of the opposite surface when the slide member is slidden against the fixing belt such that the downstream edge of the opposite surface is positioned upstream from the continuous portion in the conveyance direction.