Abstract: A heating device includes a conveying unit, a heating unit, a temperature detecting unit and a controller. The conveying unit conveys a recording material. The heating unit includes a plurality of heat sources which are disposed so that locations thereof are different from each other in a conveying direction of the recording material, and heats the conveyed recording material. The temperature detecting unit is positioned on an upstream side in the conveying direction of the recording material with respect to the plurality of heat sources, and detects a temperature of the heating unit. The controller controls one of the plurality of heat sources based on a detecting result obtained by the temperature detecting unit. The one of the plurality of heat sources is positioned on the upstream side in the conveying direction of the recording material.

Abstract: A preheating device includes two first inverting members disposed at different positions while obliquely intersecting a feeding direction of a continuous recording medium on which an unfixed image is formed, the first inverting members inverting the recording medium by passing a back surface of the recording medium, on which the unfixed image is not formed, therealong before a fixing operation, and at least one heating rotating body disposed at a position further on an outside than a side edge portion of the recording medium in the feeding direction to preheat the recording medium before the fixing operation by passing a portion of the back surface of the recording medium present between the two first inverting members so that the portion of the back surface is wound around the heating rotating body.

Abstract: A preheating device includes a heating member that is capable of heating a continuous medium, and a movement unit that moves at least one of the continuous medium and the heating member in a direction in which the continuous medium and the heating member move relatively closer to each other or in a direction in which the continuous medium and the heating member move relatively away from each other. The movement unit moves at least one of the continuous medium and the heating member in the direction in which the continuous medium and the heating member move relatively closer to each other if predetermined heating conditions are satisfied, and the movement unit moves at least one of the continuous medium and the heating member in the direction in which the continuous medium and the heating member move relatively away from each other if the heating conditions are not satisfied.

Abstract: A heating device includes a heating member body having a surface that is configured to contact a continuous medium; plural heat sources that are arranged in a width direction of the continuous medium and that are configured to increase a temperature of the heating member body; an electric power circuit that is configured to supply electric power to the heat sources in accordance with a width of the continuous medium; a heat transfer member that is disposed so as to face the heat sources and that extends in the width direction of the continuous medium; and an overheat prevention device that is disposed in contact with the heat transfer member and that is configured to stop supply of electric power from the electric power circuit if a temperature of the heat transfer member exceeds a predetermined temperature.

Abstract: A heating device includes a heating member body having a surface that is configured to contact a continuous medium; plural heat sources that are arranged in a width direction of the continuous medium and that are configured to increase a temperature of the heating member body; an electric power circuit that is configured to supply electric power to the heat sources in accordance with a width of the continuous medium; a heat transfer member that is disposed so as to face the heat sources and that extends in the width direction of the continuous medium; and an overheat prevention device that is disposed in contact with the heat transfer member and that is configured to stop supply of electric power from the electric power circuit if a temperature of the heat transfer member exceeds a predetermined temperature.

Abstract: An image forming apparatus includes a heating unit that heats a recording material, a contact member that is positioned upstream or downstream from the heating unit in a transport direction of the recording material and is in contact with the recording material, the contact member being configured in such a manner that a portion of the contact member that is in contact with the recording material moves with the recording material, a temperature detection unit that detects a temperature of the contact member, and a control unit that controls, based on a detection result obtained by the temperature detection unit, an output of the heating unit.

Abstract: A preheating device includes a heating member that is capable of heating a continuous medium, and a movement unit that moves at least one of the continuous medium and the heating member in a direction in which the continuous medium and the heating member move relatively closer to each other or in a direction in which the continuous medium and the heating member move relatively away from each other. The movement unit moves at least one of the continuous medium and the heating member in the direction in which the continuous medium and the heating member move relatively closer to each other if predetermined heating conditions are satisfied, and the movement unit moves at least one of the continuous medium and the heating member in the direction in which the continuous medium and the heating member move relatively away from each other if the heating conditions are not satisfied.

Abstract: A heating device includes a conveying unit, a heating unit, a temperature detecting unit and a controller. The conveying unit conveys a recording material. The heating unit includes a plurality of heat sources which are disposed so that locations thereof are different from each other in a conveying direction of the recording material, and heats the convey ed recording material. The temperature detecting unit is positioned on an upstream side in the conveying direction of the recording material with respect to the plurality of heat sources, and detects a temperature of the heating unit. The controller controls one of the plurality of heat sources based on a detecting result obtained by the temperature detecting unit. The one of the plurality of heat sources is positioned on the upstream side in the conveying direction of the recording material.

Abstract: A guide mechanism for a connecting component guides a second connecting component when connecting a first connecting component and the second connecting component to each other. The guide mechanism includes a guide member and an urging member. The urging member urges the guide member and continues to contract until the second connecting component reaches a connection complete position. The guide member includes rotational shafts, inner guide pieces, and outer guide pieces. The rotational shafts are provided on both sides of the second connecting component. The inner guide pieces are rotated about the rotational shafts from first initial positions to first regulating positions. The outer guide pieces are rotated about the rotational shafts from second initial positions to second regulating positions such that the rotation of the outer guide pieces is coupled with the rotation of the inner guide pieces.

Abstract: A transporting device includes a first belt, a second belt that transports a medium in cooperation with the first belt, a first shifting member that shifts the first belt in a width direction of the first belt, a second shifting member that shifts the second belt in a width direction of the second belt, a rotatable member that is rotatable around its own axis, and a forming member provided across the first belt and the second belt from the rotatable member and that forms a nip between the first and second belts in cooperation with the rotatable member. The rotatable member and the forming member cooperate to form the nip at a pressure ratio lower than about 1. The pressure ratio is obtained by dividing a pressure applied to each of two axial ends of the rotatable member by a pressure applied to an axial center of the rotatable member.

Abstract: A guide mechanism for a connecting component guides a second connecting component when connecting a first connecting component and the second connecting component to each other. The guide mechanism includes a guide member and an urging member. The urging member urges the guide member and continues to contract until the second connecting component reaches a connection complete position. The guide member includes rotational shafts, inner guide pieces, and outer guide pieces. The rotational shafts are provided on both sides of the second connecting component. The inner guide pieces are rotated about the rotational shafts from first initial positions to first regulating positions. The outer guide pieces are rotated about the rotational shafts from second initial positions to second regulating positions such that the rotation of the outer guide pieces is coupled with the rotation of the inner guide pieces.

Abstract: A fixing device includes an endless belt, a fixing rotating body that fixes, in cooperation with the belt, a toner image formed on a recording medium nipped between the fixing rotating body and the belt while rotating in contact with the belt, a support member that supports a load with which the fixing rotating body nips the recording medium with the belt so as to form a nip portion to nip the recording medium between the belt and the fixing rotating body, a driving unit that circulates the belt in a state in which the fixing rotating body is separate from the belt, and a wind-on rotating body on which the belt is wound at a position adjacent to the support member on an upstream side in a direction of transport of the recording medium to the nip portion.

Abstract: A fixing device includes an endless belt, a fixing rotating body that fixes, in cooperation with the belt, a toner image formed on a recording medium nipped between the fixing rotating body and the belt while rotating in contact with the belt, a support member that supports a load with which the fixing rotating body nips the recording medium with the belt so as to form a nip portion to nip the recording medium between the belt and the fixing rotating body, a driving unit that circulates the belt in a state in which the fixing rotating body is separate from the belt, and a wind-on rotating body on which the belt is wound at a position adjacent to the support member on an upstream side in a direction of transport of the recording medium to the nip portion.