Abstract: The fixing apparatus includes: a fixing member having base and conductive layers and fixing a toner onto a recording medium when the conductive layer is heated by electromagnetic induction; a magnetic field generating member generating an alternating-current magnetic field crossing the conductive layer; and a magnetic field inducing member arranged so as to face the magnetic field generating member across the fixing member, and inducing the magnetic field into itself or allowing the magnetic field to go through the member. The base layer and the magnetic field inducing member each contain a material having a magnetic permeability change onset temperature in a range from not less than a heating preset temperature of the fixing member to not more than a heatproof temperature of the fixing member. A thickness of the base layer is smaller than a skin depth of the layer at the heating preset temperature of the fixing member.

Abstract: A laminated body has a heat generating layer having crystal grains of a first non-magnetic metal, and a base layer containing a second non-magnetic metal that is different from the first non-magnetic metal.

Abstract: A cylindrical rotating member rotatably supported in a device in state where it is configured to contact a medium and that is heated in state where it is supported in the device, including: an elastically deformable base body that is a metal cylinder extending in a width direction of the medium, the width direction intersecting a transport direction of the medium, the base body being configured such that: when the base body is rotated and a portion of the base body reaches a contact-portion at which the base body contacts the medium, the portion of the base body elastically deforms, applies pressure to the medium, increases the size of a contact-area with the medium and applies heat to the medium; and after the base body is further rotated and the portion of the base body has passed the contact-portion, the base body elastically recovers its original shape is provided.

Abstract: A fixing device includes: a magnetic field generating unit that generates a magnetic field; a cylindrical fixing member that is disposed to face the magnetic field generating unit, generates heat due to electromagnetic induction of the magnetic field, and includes a heat generating layer that has a thickness thinner than a skin depth, and a temperature sensing layer which has a magnetic permeability change starting temperature, in a temperature range from a set fixing temperature to a heat resisting temperature, at which a magnetic permeability starts to decrease continuously, and which contacts with a face of the heat generating layer opposite to the magnetic field generating unit; and a pressure rotating body that is brought into pressure contact with an outer peripheral surface of the fixing member and deformed.

Abstract: A fixing device includes: a fixing roll member; a support roll member; a fixing belt member rotated while being mounted on and tensioned by the fixing roll member and the support roll member; a roll heating unit that heats the fixing roll member; a belt heating unit that heats the fixing belt member; a pressing member that is in press contact with a portion of the fixing roll member, around which the fixing belt member is wound, to form a nip portion; and a temperature controlling device that controls and drives the roll heating unit and the belt heating unit. The temperature controlling device controls the fixing roll member and the fixing belt member to be different temperatures.

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: Provided is a sliding member, including: a substrate; and a non-continuous diamond-like carbon layer provided on a surface of the substrate, the non-continuous diamond-like carbon layer being formed from a plurality of diamond-like carbon layer portions that are separated from one another by grooves. Also provided is a fixing device including: a fixing belt; a pressure member that contacts the outer peripheral surface of the fixing belt; and at least one fixed sliding member on which the fixing belt slides, the fixed sliding member contacting the inner peripheral surface of the fixing belt, at least one of the fixing belt and the fixed sliding member comprising a non-continuous diamond-like carbon layer on a sliding surface between the fixing belt and the fixed sliding member, the non-continuous diamond-like carbon layer being formed from a plurality of diamond-like carbon layer portions that are separated from one another by grooves.

Abstract: A fixing device for fixing a toner image on a recording material, includes a rotatable endless belt member, a pressure member provided to press into contact and form a nip portion with the belt member, through which the recording material passes, and a peeling member provided downstream of the nip portion, peeling the recording material passed through the nip portion from the belt member by bending the belt member to have different shapes at a widthwise middle portion and at both end portions while the belt member is passing through the peeling member.

Abstract: A fixing device includes: a magnetic field generating component that generates a magnetic field; a fixing member including a heat generating layer that is electromagnetically induced by the magnetic field to generate heat; a support disposed at an inner side of the fixing member; a pressure rotating body that applies pressure to the fixing member in the direction of the support; and a pair of magnetic circuit forming members that are disposed with the fixing member and the magnetic field generating component being placed therebetween and can be used while having either elastic deformation or plastic deformation applied thereto.

Abstract: A heating device includes a magnetic field generating unit, and a heat generating body having a heat generating layer generating heat due to electromagnetic induction, and a temperature-sensitive layer. The heat generating layer is disposed opposing the magnetic field generating unit. The temperature-sensitive layer has a Curie temperature greater than or equal to a set temperature of the heat generating layer and less than or equal to a heat-resistant temperature of the heat generating layer, and is disposed at a side of heat generating layer opposite a side where the magnetic field generating unit is disposed such that heat from the heat generating layer is conducted. At temperatures lower than the Curie temperature, the temperature-sensitive layer causes the magnetic field to penetrate in from the heat generating layer, and at temperatures greater than or equal to the Curie temperature, causes magnetic flux of the magnetic field to pass therethrough.

Abstract: A heating device has a magnetic field generating unit generating a magnetic field, a heat generating layer, and a heating/rotating unit. The heat generating layer is disposed so as to oppose the magnetic field generating unit, and is at least electromagnetically induced by the magnetic field to generate heat. The heating/rotating unit includes a supporting layer which supports the heat generating layer, and has n (n?2) metal layers.

Abstract: A fixing unit for fixing a toner image on a recording material includes: a rotatable fixing roll; a fixing belt stretched on the fixing roll; at least one tension roll stretching the fixing belt with the fixing roll; a pressurization member disposed to give a pressure to the fixing roll; and a stripping member disposed to press the outer surface of the fixing belt onto the pressurization member in a vicinity of a downstream side of a first contact portion between the fixing roll and the pressurization member.

Abstract: There is provided a laminated body including a heat generation layer that includes crystalline particles of a non-magnetic metal; and a base layer that includes a magnetic shunt alloy. There are also provided an endless belt, a fixing device and an image forming apparatus using the laminated body.

Abstract: According to the invention, there is provided a laminated body comprising a heat generating layer having crystal grains of a first non-magnetic metal, and a base layer containing a second non-magnetic metal that is different from the first non-magnetic metal.

Abstract: The invention provides a fixing device comprising a first rotary body having a thermosensitive magnetic metal layer, the thermosensitive magnetic metal layer including a thermosensitive magnetic metal material having a Curie point, a second rotary body contacting the first rotary body, and a magnetic field generating unit for generating a magnetic field, the unit being arranged to have a predetermined interval with respect to the inner circumferential face or the outer circumferential face of the first rotary body.

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: Fixing device includes a first cylindrical rotating member having an inner peripheral surface and an outer peripheral surface; a second rotating member which is brought into contact with the first rotating member; magnetic field generation units for generating a magnetic field, the magnetic field generation units being provided at a predetermined distance from the inner or outer peripheral surface of the first rotating member; and a heat generation member that generates heat by a magnetic field, the heat generation member being provided so as to be opposed to the magnetic field generation units across the first rotating member and to be in contact with the first rotating member, having a thickness larger than a skin depth, and containing a magnetic metal material.

Abstract: The invention provides a fixing device having at least: a first rotary body, having a heat generating layer from which heat is generated by action of a magnetic field: a second rotary body contacting the first rotary body; a magnetic field generating unit arranged to have a predetermined separation from the inner circumferential face of the first rotary body or to have a predetermined separation from the outer circumferential face of the first rotary body; and a heat generation controlling member arranged facing the magnetic field generating unit, with the first rotary body being between the heat generation controlling member and the magnetic field generating unit, the heat generation controlling member having at least a temperature-sensitive magnetic material having a Curie temperature and controlling generation of heat of the heat generating layer. The invention further provides an image forming device having at least the mixing device.

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 fixing unit includes a belt module that has a belt member stretched around a rotary roll and a stretching roll, the belt module transporting a recording medium, and a pressing member that is disposed to press the belt module and forming a nip portion between the belt module and the pressing member. The belt module is provided with a peeling member disposed downstream and spaced from the nip portion in a transporting direction of the recording medium, the peeling member supporting the belt member from inside thereof and bending a traveling direction of the belt member.