Abstract: An apparatus for inclining a roller on which a pressure belt is suspended to perform a deviation control of the pressure belt, which can well perform the deviation control of the pressure belt even when the pressure belt has been spaced apart from a fixing roller. A fixing device is provided with a pressure belt suspended on rollers, a deviation control device adjusting the deviation of the pressure belt, and a pressure unit bringing the pressure belt into pressure contact with a fixing roller to form a nip portion. The deviation control device is designed to be moved with the pressure unit.

Abstract: An image forming apparatus has a endless conveying belt (50) which conveys a sheet (P) on which an image is to be formed, and is twisted 720 degrees, and a plurality of suspending members which suspend the conveying belt (50). The conveying belt (50) is suspended on the suspending member like a figure of eight, and conveys a sheet (P) by rotation driving of the conveying belt (50).

Abstract: In a fixing apparatus capable of reducing unevenness in temperature distribution in an axial direction while reducing heat loss at an end portion, a fixing belt 11 extended around a fixation roller 13 and a fixation tension roller 14 is heated by a coil unit 28 for effecting induction heating. The fixation tension roller 14 is assembled by inserting a heat pipe 15 into a hollow roller 14a. At both end portions, the hollow roller 14a is covered with a cover portion having small holes.

Abstract: An image heating apparatus including an endless belt for heating an image on a recording material; a supporting member for supporting the belt; a coil for induction heat generation in the belt; control means for controlling a position of the belt in a widthwise direction by inclining the supporting member so as to maintain the position of the belt in the widthwise direction within a predetermined target range; and suppressing means for suppressing a variation of a distance between the belt and the coil with a variation of inclination of the supporting member.

Abstract: An image forming apparatus includes an image forming portion that forms a toner image on a recording material, in which the image forming portion is provided in a main body of the image forming apparatus, a heating apparatus that heats the toner image on the recording material, the heating apparatus being provided in the main body, a discharge path for discharging air in the main body to an exterior, an adsorption filter provided in the discharge path and capable of removing, by adsorption, a compound in the air discharged through the discharge path, and a catalyst filter provided in the discharge path and capable of removing, by a catalytic decomposition, a compound in the discharged air. The catalyst filter is provided at a downstream side of the adsorption filter, along a direction of air discharge.

Abstract: The sheet processing apparatus is equipped with a process tray on which sheets conveyed are stacked, a return belt which moves the sheets stacked on the process tray, a trailing edge stopper which receives an end portion of the sheets moved by the return belt, and a conveyance assist roller which comes into contact with the sheets on the upstream side of the return belt with respect to the sheet moving direction and imparts a load to the movement of the sheets. The return belt moves the sheets to which a load has been imparted by the conveyance assist roller and causes them to be abutted on the trailing edge stopper.

Abstract: The present invention provides a sheet conveying apparatus, an image forming apparatus, and an image reading apparatus capable of stably correcting the delay or the advance of a sheet even if sheet conveying rollers such as a skew feeding correction roller and the like are decentered. The delay amount or the advance amount of the sheet being conveyed is detected by a deviation amount detection unit 53 as well as a control amount setting unit 55 sets the sheet conveying speed and the correction time of a sheet conveying roller 11 which corrects the delay or the advance of the sheet based on the delay amount or the advance amount of the sheet detected by the deviation amount detection unit 53. The control amount setting unit 55 sets the sheet conveying speed and the correction time of the sheet conveying roller 11 so that the delay or the advance of the sheet is corrected when the sheet conveying roller 11 rotates integer multiple.

Abstract: The sheet processing apparatus is equipped with a process tray on which sheets conveyed are stacked, a return belt which moves the sheets stacked on the process tray, a trailing edge stopper which receives an end portion of the sheets moved by the return belt, and a conveyance assist roller which comes into contact with the sheets on the upstream side of the return belt with respect to the sheet moving direction and imparts a load to the movement of the sheets. The return belt moves the sheets to which a load has been imparted by the conveyance assist roller and causes them to be abutted on the trailing edge stopper.

Abstract: An image heating apparatus including an endless belt for heating an image on a recording material; a supporting member for supporting the belt; a coil for induction heat generation in the belt; control means for controlling a position of the belt in a widthwise direction by inclining the supporting member so as to maintain the position of the belt in the widthwise direction within a predetermined target range; and suppressing means for suppressing a variation of a distance between the belt and the coil with a variation of inclination of the supporting member.

Abstract: A sheet processing apparatus includes a processing tray on which sheets are stacked in a bundle form, an intermediate portion stapler which staples the intermediate portion of the sheet bundle stacked on the processing tray, a sheet bundle conveying member which conveys the stapled sheet bundle, a curved sheet bundle conveying path which is downwardly curved on the downstream side of the processing tray with respect to the sheet conveying direction and adapted to guide the sheet bundle conveyed by the sheet bundle conveying member, and a folding device which is arranged in the intermediate portion of the curved sheet bundle conveying path and which folds the stapled sheet bundle, wherein the processing tray is set to be lower on the upstream side than on the downstream side with respect to the sheet conveying direction, and wherein the curved guide path has an extended portion extending to a position under the stacking portion.

Abstract: The present invention related to an endless belt conveying apparatus and toner image heating apparatus having spring members (thermally responsive members) composed of a shape memory alloy are disposed to both the edges of a pressure fixing belt (pressure belt) in the belt width direction thereof. When the pressure fixing belt offsets to one side in the belt width direction while it travels, one of the spring members, which is heated by the edge of the pressure belt approaching it, is deformed in response to the heat. A roller swing support frame on the belt edge side, which approaches the above spring member, is lifted upward in a gravity direction using a swing pin as a fulcrum in a gravity direction by the operation force generated by the deformation of the one spring member. The swing operation is alternately repeated between the one spring member and the other spring member to thereby correct the inclination of the pressure belt.

Abstract: To remove also VOC gas generated from the discharged sheets, an image forming apparatus comprises an image forming unit which forms an image on a sheet; a tray on which sheets on which images are formed by the image forming unit are stacked; a suction device which sucks air from the surrounding space of sheets stacked up on the tray; and a VOC removing unit which removes VOC contained in the air sucked by the sucking device.

Abstract: An image forming apparatus for forming an image on a recording material includes an image bearing member; a charging device for charging the image bearing member; an air path portion for guiding both ozone produced by charging the image bearing member and volatile organic compounds produced in the image forming apparatus toward the outside atmosphere; a catalyst filter provided in the air path portion; and an activated carbon filter provided in the air path portion. The catalyst filter and the activated carbon filter are disposed in the air path portion in series. The catalyst filter is disposed upstream of the activated carbon filter with respect to a direction of flow in the air path portion.

Abstract: A sheet processing apparatus includes a processing tray on which sheets are stacked in a bundle form, an intermediate portion stapler which staples the intermediate portion of the sheet bundle stacked on the processing tray, a sheet bundle conveying member which conveys the stapled sheet bundle, a curved sheet bundle conveying path which is downwardly curved on the downstream side of the processing tray with respect to the sheet conveying direction and adapted to guide the sheet bundle conveyed by the sheet bundle conveying member, and a folding device which is arranged in the intermediate portion of the curved sheet bundle conveying path and which folds the stapled sheet bundle, wherein the processing tray is set to be lower on the upstream side than on the downstream side with respect to the sheet conveying direction, and wherein the curved guide path has an extended portion extending to a position under the stacking portion.

Abstract: An image heating apparatus including an endless belt for heating an image on a recording material; a supporting member for supporting the belt; a coil for induction heat generation in the belt; control means for controlling a position of the belt in a widthwise direction by inclining the supporting member so as to maintain the position of the belt in the widthwise direction within a predetermined target range; and suppressing means for suppressing a variation of a distance between the belt and the coil with a variation of inclination of the supporting member.

Abstract: A sheet processing apparatus includes a processing tray on which sheets are stacked in a bundle form, an intermediate portion stapler which staples the intermediate portion of the sheet bundle stacked on the processing tray, a sheet bundle conveying member which conveys the stapled sheet bundle, a curved sheet bundle conveying path which is downwardly curved on the downstream side of the processing tray with respect to the sheet conveying direction and adapted to guide the sheet bundle conveyed by the sheet bundle conveying member, and a folding device which is arranged in the intermediate portion of the curved sheet bundle conveying path and which folds the stapled sheet bundle, wherein the processing tray is set to be lower on the upstream side than on the downstream side with respect to the sheet conveying direction, and wherein the curved guide path has an extended portion extending to a position under the stacking portion.

Abstract: A sheet conveying apparatus including: a skew feed amount detecting portion for detecting a skew feed amount of a sheet; a pair of skew feed correcting portions for correcting the skew feed by conveying the sheet by their independent rotations; a conveying amount detecting portion for detecting the sheet conveying amounts by the correcting portions; and a controller for controlling rotations of the correcting portions based on detection results obtained by the skew feed amount detecting portion and the conveying amount detecting portion, wherein, after a skew feed correcting operation-is started, the controller detects a sheet correction amount by the correcting portions based on a detection result obtained by the conveying amount detecting portion, and controls the rotations of the correcting portions so that the sheet correction amount equals to the skew feed amount of the sheet detected by the skew feed amount detecting portion.

Abstract: An apparatus for inclining a roller on which a pressure belt is suspended to perform a deviation control of the pressure belt, which can well perform the deviation control of the pressure belt even when the pressure belt has been spaced apart from a fixing roller. A fixing device is provided with a pressure belt suspended on rollers, a deviation control device adjusting the deviation of the pressure belt, and a pressure unit bringing the pressure belt into pressure contact with a fixing roller to form a nip portion. The deviation control device is designed to be moved with the pressure unit.

Abstract: An image heating apparatus includes an endless belt for heating an image on a recording material at a nip; a pressing pad for pressing the belt at the nip; a supporting member for supporting the belt at an inner surface thereof, the supporting member being displaceable to move the belt in a widthwise direction of the belt; a lubricant application member for applying lubricant onto the inner surface of the belt; and displacing means for displacing the lubricant application member in accordance with a displacement of the supporting member.

Abstract: In a fixing apparatus capable of reducing unevenness in temperature distribution in an axial direction while reducing heat loss at an end portion, a fixing belt 11 extended around a fixation roller 13 and a fixation tension roller 14 is heated by a coil unit 28 for effecting induction heating. The fixation tension roller 14 is assembled by inserting a heat pipe 15 into a hollow roller 14a. At both end portions, the hollow roller 14a is covered with a cover portion having small holes.