Abstract: The fixing device includes: a fixing member including a conductive layer, and fixing toner on a recording medium by heat generation of the conductive layer by electromagnetic induction; a magnetic field generating member generating an alternate-current magnetic field intersecting with the conductive layer; and a magnetic path forming member that has an outer circumferential surface arranged to be in contact with an inner circumferential surface of the fixing member, that forms a magnetic path of the alternate-current magnetic field generated by the magnetic field generating member, and that includes: a magnetic layer having a changing range within a temperature range of about 20 degrees C., the changing range allowing a magnetic property of the magnetic layer to change between ferromagnetic and a paramagnetic properties in accordance with temperature; and an outer circumferential layer made of any one of or both chromium nitride as CrN and chromium nitride as Cr2N.

Abstract: The fixing device includes: a fixing member including a conductive layer capable of self-heating by electromagnetic induction; a drive unit rotationally driving the fixing member; a magnetic field generating member generating an alternate-current magnetic field intersecting with the conductive layer; a fixation pressing member movable so as to come into pressure contact with an outer circumferential surface of the fixing member and to separate from the outer circumferential surface; and a temperature measurement unit that includes a temperature detector and a support portion, that measures temperature of the fixing member with the temperature detector which is pressed by the support portion to be brought into contact with an inner circumferential surface of the fixing member, and that holds a contact state between the temperature detector and the inner circumferential surface in every state where the fixing member is displaced in accordance with movement of the fixation pressing member.

Abstract: A fixing device for fixing a toner image onto a recording medium, includes: a belt member rotatably provided; a heating section that heats the belt member; a pressurization member, placed so as to be pressed against the belt member, that forms a nip portion to allow the recording medium to pass through between the pressurization member and the belt member; and an uniforming section that uniforms a temperature distribution in a longitudinal direction of the pressurization member.

Abstract: A belt fixing device includes an endless belt member, an excitation coil and a deterioration detection unit. The endless belt member includes a metal layer. The excitation coil heats the metal layer by electromagnetic induction. The deterioration detection unit detects deterioration of the metal layer of the belt member through the excitation coil.

Abstract: A roller includes: a columnar metal core; and a layer that covers, to a predetermined thickness, an outer circumferential surface of the metal core, the layer including bubbles inside, and being provided with one or more cuts penetrating the bubbles through each of end surfaces of the layer.

Abstract: A method for manufacturing a heat resistant resin film with a metal thin film is configured to include the steps of: biasing a conductive material to one surface of the heat resistant resin film; and applying electrolytic plating to the heat resistant resin film while using the conductive material biased to the one surface of the heat resistant resin film as an electrode, so as to form a metal thin film on the heat resistant resin film.

Abstract: A fixing apparatus for fixing an unfixed image on a recording material includes: a heating member having a conductive layer, that is rotatably provided; a pressure member that is rotatably provided and that is brought into press-contact with the heating member, thereby forms a fixing nip part to pass the recording material between the pressure member and the heating member; a heating unit that performs induction heating on the heating member via the conductive layer; a driving unit that rotates the heating member; and an attachment/separation unit that attaches or separates the heating member to/from the pressure member.

Abstract: A roller includes: a columnar metal core; and a layer that covers, to a predetermined thickness, an outer circumferential surface of the metal core, the layer including bubbles inside, and being provided with one or more cuts penetrating the bubbles through each of end surfaces of the layer.

Abstract: A belt fixing device includes an endless belt member, an excitation coil and a deterioration detection unit. The endless belt member includes a metal layer. The excitation coil heats the metal layer by electromagnetic induction. The deterioration detection unit detects deterioration of the metal layer of the belt member through the excitation coil.

Abstract: A fixing device for fixing a toner image onto a recording medium, includes: a belt member rotatably provided; a heating section that heats the belt member; a pressurization member, placed so as to be pressed against the belt member, that forms a nip portion to allow the recording medium to pass through between the pressurization member and the belt member; and an uniforming section that uniforms a temperature distribution in a longitudinal direction of the pressurization member.

Abstract: A fixing device includes: a fixing belt member configured to be endless and rotatable; driving force transmission members that are disposed on respective ends of the fixing belt member, and transmits a rotational driving force to the fixing belt member; and a pressing member that is disposed to push an outer surface of the fixing belt member and forms a fixing nip part between the pressing member and the fixing belt member, wherein each of the driving force transmission members is fixed to the fixing belt member over an entire peripheral area of the corresponding end of the fixing belt member.

Abstract: A fixing device includes an endless fixing belt which is tensionless in a circumferential direction in a center part in a lateral direction and supported to circularly move, a heating device that heats the fixing belt, a pressure roll contacted with an outer peripheral face and supported to rotate around an axis, a pressure member contacted with an inner peripheral face to exert pressure on the pressure roll, and a support member passed through inside the fixing belt and supporting the pressure member. Preferably, an unfixed toner image on a recording medium passing the nip part which is formed between the fixing belt and the pressure roll is pressurized and heated to be formed into a fixed image, and the fixing belt is kept in a round shape in the circumferential direction near both side edges and supported to rotate around a center axis determined by the support member.

Abstract: A fixing apparatus for fixing an unfixed image on a recording material includes: a heating member having a conductive layer, that is rotatably provided; a pressure member that is rotatably provided and that is brought into press-contact with the heating member, thereby forms a fixing nip part to pass the recording material between the pressure member and the heating member; a heating unit that performs induction heating on the heating member via the conductive layer; a driving unit that rotates the heating member; and an attachment/separation unit that attaches or separates the heating member to/from the pressure member.

Abstract: A fixing device includes: a fixing belt member configured to be endless and rotatable; driving force transmission members that are disposed on respective ends of the fixing belt member, and transmits a rotational driving force to the fixing belt member; and a pressing member that is disposed to push an outer surface of the fixing belt member and forms a fixing nip part between the pressing member and the fixing belt member, wherein each of the driving force transmission members is fixed to the fixing belt member over an entire peripheral area of the corresponding end of the fixing belt member.

Abstract: The present invention provides a fixing belt including a substrate having provided thereon at least a metal heating layer and a releasing layer, wherein at least a protective layer is provided between the metal heating layer and the releasing layer, a manufacturing method thereof, and an electromagnetic induction heat-fixing device using the same.

Abstract: A fixing device includes an endless fixing belt which is tensionless in a circumferential direction in a center part in a lateral direction and supported to circularly move, a heating device that heats the fixing belt, a pressure roll contacted with an outer peripheral face and supported to rotate around an axis, a pressure member contacted with an inner peripheral face to exert pressure on the pressure roll, and a support member passed through inside the fixing belt and supporting the pressure member. Preferably, an unfixed toner image on a recording medium passing the nip part which is formed between the fixing belt and the pressure roll is pressurized and heated to be formed into a fixed image, and the fixing belt is kept in a round shape in the circumferential direction near both side edges and supported to rotate around a center axis determined by the support member.

Abstract: A method for manufacturing a heat resistant resin film with a metal thin film is configured to include the steps of: biasing a conductive material to one surface of the heat resistant resin film; and applying electrolytic plating to the heat resistant resin film while using the conductive material biased to the one surface of the heat resistant resin film as an electrode, so as to form a metal thin film on the heat resistant resin film.

Abstract: The present invention provides a fixing belt including a substrate having provided thereon at least a metal heating layer and a releasing layer, wherein at least a protective layer is provided between the metal heating layer and the releasing layer, a manufacturing method thereof, and an electromagnetic induction heat-fixing device using the same.

Abstract: A magnetic core as a magnetic material that acts on an electromagnetic characteristic of the generated magnetic field and a magnetic field shield member that shields the magnetic field generated by magnetic field generation unit are structured such that magnetic particles are arranged in a base material under a dispersed state. As a result, a magnetic core in which an inductance can be set and a magnetic field shield member in which magnetic field leakage can be suppressed effectively, as well as an excitation coil, a transformer, electric equipment and an electrophotographic apparatus using them are easily provided at low costs.

Abstract: The method for manufacturing a heat resistant resin film with a metal thin film, is configured to comprise the steps of: biasing a conductive material to one surface of the heat resistant resin film; and applying electrolytic plating to the heat resistant resin film while using the conductive material biased to the one surface of the heat resistant resin film as an electrode, so as to form a metal thin film on the heat resistant resin film.