Abstract: A heating device includes: a heater including plural heating portions that generate different amounts of heat in a width direction that crosses a transport direction in which a heating object is transported; and plural temperature equalization members that are disposed on the heater and extend in the width direction with an interval provided therebetween in the transport direction, the plural temperature equalization members equalizing a temperature of the heater in the width direction. One of the plural temperature equalization members has a length greater than or equal to a width of a maximum passing region of the heater through which the heating object passes when the heating object has a maximum width. A remaining one of the plural temperature equalization members has a length less than the length of the one of the plural temperature equalization members.

Abstract: A heating device is provided. The heating device includes a heating unit, heating a member to be heated, which is transported, and a contact portion of the heating unit contacting with the member to be heated; a heat pipe, having a first end and a second end opposite to the first end in a widthwise direction, and contacting with a portion of the heating unit different from the contact portion so as to extend in the widthwise direction crossing a transport direction of the member to be heated; a rotating body, rotating so as to press the member to be heated; and a power input unit, having a gear disposed on a second end side of the heat pipe and inputting a rotational force at least to the rotating body. The first end of the heat pipe has a thickness smaller than that of the second end.

Abstract: A fixing device includes a movable belt; and a planar heat-generating section that is in contact with the belt and in which, among plural heat-generating portions provided in a movement direction of the belt, a heat-generating portion on an upstream side in the movement direction of the belt has a larger heat generation amount than a heat-generating portion on a downstream side.

Abstract: A fixing device includes a rotatable endless belt; a planar heat-generating section in which at least a downstream end portion in a movement direction of the belt is in pressure contact with a rotating body via a pressure contact portion and a cross-sectional shape of a downstream edge portion being in contact with an inner surface of the belt is formed in a curved shape having a curvature radius of 0.01 mm or more 0.2 mm or less or in a shape in which the edge portion is cut out over the dimension; and a holding section that is disposed inside the belt and holds the planar heat-generating section to be in pressure contact with the rotating body.

Abstract: A heating device includes a heating unit that heats a member to be heated, which is transported, as a result of a contact portion of the heating unit being in contact with the member to be heated, a heat pipe that is disposed on a portion of the heating unit different from the contact portion in such a manner as to extend in a widthwise direction crossing a transport direction of the member to be heated and that includes a crimped portion formed at a first end of the heat pipe, a rotating body that rotates in such a manner as to press the member to be heated against the contact portion of the heating unit, and a power input unit that is disposed on a second end side of the heat pipe and that inputs a rotational force at least to the rotating body.

Abstract: A fixing device includes a movable belt; and a planar heat-generating section that is in contact with the belt and in which, among plural heat-generating portions provided in a movement direction of the belt, a heat-generating portion on an upstream side in the movement direction of the belt has a larger heat generation amount than a heat-generating portion on a downstream side.

Abstract: A fixing device includes a rotatable endless belt; a planar heat-generating section in which at least a downstream end portion in a movement direction of the belt is in pressure contact with a rotating body via a pressure contact portion and a cross-sectional shape of a downstream edge portion being in contact with an inner surface of the belt is formed in a curved shape having a curvature radius of 0.01 mm or more 0.2 mm or less or in a shape in which the edge portion is cut out over the dimension; and a holding section that is disposed inside the belt and holds the planar heat-generating section to be in pressure contact with the rotating body.

Abstract: A heating device includes a heating unit that heats a member to be heated, which is transported, as a result of a contact portion of the heating unit being in contact with the member to be heated, a heat pipe that contacts with a portion of the heating unit different from the contact portion in such a manner as to extend in a widthwise direction crossing a transport direction of the member to be heated and that includes a crimped portion formed at a first end of the heat pipe, and a power-supply connection unit that is disposed on a second end side of the heat pipe and that is connected to a wiring line through which power is supplied to the heating unit.

Abstract: A thermally conductive pipe includes a pipe having closed both end portions; a working fluid that is enclosed in inside of the pipe and that is vaporized and liquefied; and a liquid transfer member that extends in a longitudinal direction of the inside of the pipe and that transfers the liquefied working fluid at least in the longitudinal direction. An occupancy rate of a cross-sectional area of the liquid transfer member to a cross-sectional area in a transverse direction of the inside of the pipe is in a range of 20% or more and 50% or less.

Abstract: A thermally conductive pipe includes a pipe of which both end portions are closed, a working liquid that is sealed inside the pipe and vaporizes and liquefies, and a liquid transfer unit that exists along a longitudinal direction inside the pipe and transfers the liquefied working liquid at least in the longitudinal direction, in which the liquid transfer unit has, in a case of being viewed in a cross section of the pipe, which is orthogonal to the longitudinal direction, a first liquid transfer unit that is in contact with at least a partial range of an inner wall surface of the pipe and a second liquid transfer unit that is not in contact with the inner wall surface of the pipe and the first liquid transfer unit.

Abstract: A thermally conductive pipe includes a pipe having closed both end portions; a working fluid that is enclosed in inside of the pipe and that is vaporized and liquefied; and a liquid transfer member that extends in a longitudinal direction of the inside of the pipe and that transfers the liquefied working fluid at least in the longitudinal direction. An occupancy rate of a cross-sectional area of the liquid transfer member to a cross-sectional area in a transverse direction of the inside of the pipe is in a range of 20% or more and 50% or less.

Abstract: A heating device includes a surface heater unit including a heater portion that generates heat in a region extending in a longitudinal direction, the surface heater unit heating a heating object; and a heat conducting unit having a hollow space in which working fluid is sealed and including a working-fluid transport unit that transports the working liquid in the longitudinal direction, the heat conducting unit being in contact with the surface heater unit. The working-fluid transport unit is provided unevenly in a direction crossing the longitudinal direction in the hollow space.

Abstract: A heating device includes a heating unit that heats a member to be heated, which is transported, as a result of a contact portion of the heating unit being in contact with the member to be heated, a heat pipe that contacts with a portion of the heating unit different from the contact portion in such a manner as to extend in a widthwise direction crossing a transport direction of the member to be heated and that includes a crimped portion formed at a first end of the heat pipe, and a power-supply connection unit that is disposed on a second end side of the heat pipe and that is connected to a wiring line through which power is supplied to the heating unit.

Abstract: A heating device includes a surface heater unit including a heater portion that generates heat in a region extending in a longitudinal direction, the surface heater unit heating a heating object; and a heat conducting unit having a hollow space in which working fluid is sealed and including a working-fluid transport unit that transports the working liquid in the longitudinal direction, the heat conducting unit being in contact with the surface heater unit. The working-fluid transport unit is provided unevenly in a direction crossing the longitudinal direction in the hollow space.

Abstract: A heating device includes a heating unit that heats a member to be heated, which is transported, as a result of a contact portion of the heating unit being in contact with the member to be heated, a heat pipe that is disposed on a portion of the heating unit different from the contact portion in such a manner as to extend in a widthwise direction crossing a transport direction of the member to be heated and that includes a crimped portion formed at a first end of the heat pipe, a rotating body that rotates in such a manner as to press the member to be heated against the contact portion of the heating unit, and a power input unit that is disposed on a second end side of the heat pipe and that inputs a rotational force at least to the rotating body.

Abstract: A heating device includes a heating unit that heats a member to be heated, which is transported, as a result of a contact portion of the heating unit being in contact with the member to be heated, a heat pipe that is disposed on a portion of the heating unit different from the contact portion in such a manner as to extend in a widthwise direction crossing a transport direction of the member to be heated and that includes a crimped portion formed at a first end of the heat pipe, and a power-supply connection unit that is disposed on a second end side of the heat pipe and that is connected to a wiring line through which power is supplied to the heating unit.

Abstract: A heating device includes a rotating unit, a transport belt, a heater, and at least one heat pipe. The rotating unit rotates. The transport belt rotates together with the rotating unit while nipping a heated member together with the rotating unit so as to transport the heated member. The heater has a contact surface in contact with an inner peripheral surface of the transport belt and a non-contact surface not in contact with the inner peripheral surface of the transport belt, and generates heat so as to heat the heated member via the transport belt. The heat pipe is disposed in an oblique direction relative to a belt width direction of the transport belt such that the heat pipe is in contact with the non-contact surface of the heater, and transfers heat in the oblique direction in accordance with a function of a working fluid enclosed inside the heat pipe.

Abstract: A heating device includes a rotating unit, a transport belt, a heater, and a heat pipe. The rotating unit rotates. The transport belt rotates together with the rotating unit while nipping a heated member together with the rotating unit so as to transport the heated member. The heater has a contact surface in contact with an inner peripheral surface of the transport belt and a flat non-contact surface not in contact with the inner peripheral surface, and generates heat so as to heat the heated member via the transport belt. The heat pipe has a flat outer surface in contact with the non-contact surface of the heater and an interior having a cross-sectionally-circular space filled with a working fluid, and transfers heat in a belt width direction of the transport belt in accordance with a function of the working fluid.

Abstract: A heating device includes a surface heater unit including a heater portion that generates heat in a region extending in a longitudinal direction, the surface heater unit heating a heating object; a support unit that supports the surface heater unit; and a heat conducting unit disposed in contact with a surface of the surface heater unit at a side opposite to a side adjacent to the heating object in a region between a center of the heater portion in a direction crossing the longitudinal direction and the support unit.

Abstract: A heating device includes a surface heater unit that generates heat along a surface extending in a longitudinal direction to heat a heating object; a heat pipe disposed to be in contact with a surface of the surface heater unit over a region extending in the longitudinal direction at a side opposite to a side adjacent to the heating object; a friction reducing material provided to a region in which the surface heater unit and the heating object are in contact with each other, the friction reducing material reducing a frictional resistance between the surface heater unit and the heating object; and a heat-conductive material interposed between the surface heater unit and the heat pipe and having a surface tension that differs from a surface tension of the friction reducing material by 3 (mN/m) or more.