Abstract:
A heating rotator that is used for heating a developer on a recording medium has a cylindrical body that is made of a metal and both end portions of the cylindrical body is rotatably supported. The cylindrical body has a thick-walled portion at both end portions that is thicker than a center portion in an axial direction of the cylindrical body, and a cross-sectional shape of the heating rotator changes from the end portions toward the center portion in a pressure area of an outer peripheral surface to which pressure is applied by a pressure rotator.
Abstract:
A fixing device includes a fixing member that is rotatably provided and heats an image formed on a recording material to fix the image to the recording material, a contact member that moves the recording material by being rotationally driven while coming into contact with the fixing member, and is provided to be separated from the fixing member, and a rotating member that is mounted on the contact member, is disposed to come into contact with the fixing member while the contact member is separated from the fixing member, rotates while interlocking with the contact member, transmits a rotational driving force from the contact member to the fixing member, and rotates with respect to the contact member when the fixing member is rotated by an external force and a rotational driving force is transmitted to the rotating member from the fixing member.
Abstract:
A fixing device includes a belt-like member provided so as to circularly move, a forming member disposed so as to come into contact with an outer peripheral surface of the belt-like member and forms a pressing portion, where a recording material is pressed, between the belt-like member and the forming member, a contact member that comes into contact with the belt-like member, a heating member positioned on a side more distant from the belt-like member as compared to the contact member, and heats the contact member, a receiving member positioned on a side more distant from the belt-like member as compared to the heating member, and receives heat from the heating member, and a heat transfer portion provided so as to be connected to the receiving member and the contact member, and transfers heat to the contact member from the receiving member.
Abstract:
A heating device includes: a heating member including a heat generation layer that generates heat by electromagnetic induction, and heating a recording medium by electromagnetic induction heating of the heat generation layer; and a pressure member configured to be movable in a direction approaching or away from the heating member, and forming a nip portion with the heating member therebetween, through which the recording medium passes, the pressure member being configured to include: a nip forming portion that forms the nip portion with the heating member therebetween in a state where the pressure member is set at a position in contact with the heating member while pressing; and a driving force transmission portion that is in contact with the heating member in a state where the nip forming portion is set at a position separated from the heating member and transmits a rotational driving force to the heating member.
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 device for fixing a toner image carried on a recording material, including: a belt member that rotates in a state where its major axis is set in a transporting direction of the recording material and its minor axis is set in a direction orthogonal to the transporting direction of the recording material; and a pressing member disposed in pressure contact with a surface of the belt member intersecting a direction of the minor axis of the belt member to form a nip part through which the recording material passes.
Abstract:
A fixing device comprises: a fixing belt that has a surface release layer of a fluorinated-resin tube, the fixing belt being laid across by a fixing roller and a tension roller; a pressurizing member that presses the fixing roller through the fixing belt; and a release member that presses the fixing belt on the pressurizing member, in a substantial vicinity of a downstream of a pressure contact site of between the fixing roller and the pressurizing member, and strips a recording material from the fixing belt, the fixing device fixing a toner image on the recording material by heat.
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 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:
Provided is a fixing device and a fixing method, and an image forming apparatus using the fixing device, in which at least heat is applied to an unfixed toner image formed on a recording material to soften or melt toner of the unfixed toner image into a state of being able to be deformed by an external force, and while maintained in the state of being able to be deformed by the external force, the toner is pressed in a nonheating manner to be flowed. Accordingly, device structure can be simplified to be free of wasteful energy consumption, an image of image quality excellent in transparency of a toner image and in OHP permeability as well as of high glossiness which is free from gloss nonuniformity can be obtained while preventing curling of a recording material.