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| Number | Title | Issue Date |
| 7868272 | Induction heating device and image forming apparatus equipped with such induction heating device In an external heating type induction heating device in which a magnetic field producing means is arranged in the outer circumferential portion of a heating roller 1, two heat generating layers, namely a conductive shaft 1a and a surface heat ge... | 01/11/2011 |
| 7842906 | Image forming apparatus An image heating device has a magnetic flux generator, a heat generating element for generating heat by a magnetic flux from the magnetic flux generator; a magnetic flux confining member, the magnetic flux confining member including a magnetic flux confining portion... | 11/30/2010 |
| 7683297 | Electric power supply control device, heating device and fixing device An electric power supply part supplies electric power to a heat-generating member and a power requiring part. A control part controls electric power supplied to the heat-generating member and the power requiring part. A first mode is to supply electric power to the ... | 03/23/2010 |
| 7679035 | Method and apparatus for water-cooling power modules in an induction calendering control actuator system used on web manufacturing processes An induction heating system used on web manufacturing processes has one or more workcoils each with an associated power module. The power modules are cooled using water. In one embodiment the power modules and the workcoils are in physical contact with a full width ... | 03/16/2010 |
| 7675010 | Fixing apparatus A fixing apparatus an aspect of the present invention includes, a heating object which generates the heat by a magnetic flux produced from a coil which generates a predetermined magnetic flux by electromagnetic induction in accordance with a frequency of an input cu... | 03/09/2010 |
| 7589300 | Image heating apparatus An image heating apparatus is constituted by a coil unit, an image heating member, and a heat transfer member for transferring heat from the coil unit to the image heating member. The heat transfer member is disposed between an inner surface of the image heating mem... | 09/15/2009 |
| 7491917 | Fuser and image forming device A fuser includes a magnetic flux generation unit to generate a magnetic flux, a heating member which is heated by electromagnetic induction of the magnetic flux, a fuser member to contact the heating member and heat a toner image so as to fuse the toner image onto a... | 02/17/2009 |
| 7473871 | Heating apparatus, fixing apparatus and image forming apparatus A heating apparatus that enables an abnormally high temperature detection section that detects, when a heating element heated by means of electromagnetic induction reaches an abnormally high temperature, this abnormally high temperature, to operate speedily and reli... | 01/06/2009 |
| 7465906 | Image heating apparatus An image heating apparatus includes a coil for generating magnetic flux, a rotatable heat generation member for generating heat by the magnetic flux generated by the coil to heat a recording material, and a magnetic flux adjusting member for adjusting a distribution... | 12/16/2008 |
| 7462804 | Induction image heating apparatus In order to prevent non-sheet passing portion temperature rise occurred in a non-sheet passing area of an electromagnetic induction heating member 1, leakage of magnetic flux is reduced by setting a Curie temperature of the heating member 1 to be small... | 12/09/2008 |
| 7456375 | Image heating apparatus of induction heating type and excitation coil unit adapted for the use therein An excitation coil unit for use in an image heating apparatus includes a coil formed with a conductor without an insulation covering and a heat-resistant insulating material covering the coil. It is thus possible to obtain an image heating apparatus of induction hea... | 11/25/2008 |
| 7442905 | Image heating apparatus An image heating apparatus includes magnetic flux generating means; a rotatable heat generation member for generating heat by a magnetic flux generated by the magnetic flux generating means to heat a recording material; a magnetic flux adjusting member, disposed bet... | 10/28/2008 |
| 7437113 | Image forming apparatus with magnetic flux shields and recovery operation An image heating apparatus has a coil for generating magnetic flux, a rotatable heat generation member which generates heat by magnetic flux, a temperature detecting member for detecting a temperature of the heat generation member, an energization controller portion... | 10/14/2008 |
| 7433639 | Fixing device In a fixing apparatus using an induction heating type of heating apparatus, there are provided an excitation apparatus that generates magnetic flux, an opposed core located opposite the excitation apparatus, a fixing belt that is induction-heated by the aforemention... | 10/07/2008 |
| 7427729 | Image heating device and image forming device An image heating apparatus is provided that enables the entire width of a heat-producing medium to be heated uniformly and an excessive rise in temperature to be prevented, without making the configuration complex. In a fixing unit 19 in which this apparatus ... | 09/23/2008 |
| 7425691 | Coil unit and fixing apparatus A fixing apparatus includes a mold (holding member) formed by injection molding to hold a coil so that the coil maintains a predetermined positional relation with respect to a heating roller, and capable of holding a temperature sensor which detects a temperature of... | 09/16/2008 |
| 7424259 | Fixing apparatus A fixing apparatus that enables the calorific value of a heat-producing rotating element to be stabilized and the heat production efficiency of that heat-producing rotating element to be improved. A fixing apparatus (200) is equipped with a heat-producing sle... | 09/09/2008 |
| 7420141 | Thermal processing roller and temperature control apparatus for roller A thermal processing roller includes a heat transfer medium flowing path therein and heats a member to be processed abutting against a surface of the roller or absorbs heat therefrom by heat transfer fluid flowing through the heat transfer medium flowing path, where... | 09/02/2008 |
| 7415234 | Image fixing device of an image forming apparatus A fixing device of an image forming apparatus includes a fixing roller rotatably mounted on a moving path of a printing medium having a toner image transferred thereon to fuse the toner image on the printing medium, a heater mounted in the fixing roller to generate ... | 08/19/2008 |
| 7411164 | Device for inductive injection of thermal energy into a printing form for fixing an image An image fixing device inductively injects thermal energy into a rotating printing form of a press for fixing an image formed on the rotating printing form by means of a digital imaging system. The fixing device has at least one inductor with at least one induction ... | 08/12/2008 |
| 7397017 | Image heating apparatus A manufacturing method for an image heating apparatus for heating an image on a recording material by a heat from a heat generating element for producing heat by a magnetic flux generated by magnetic flux generating means, the apparatus including a magnetic flux con... | 07/08/2008 |
| 7394045 | Image forming apparatus A heating apparatus includes a heat generation member for generating heat using magnetic flux; a coil for generating the magnetic flux by electric power supply thereto, the coil being disposed in the heat generation member, wherein a material to be heated is fed and... | 07/01/2008 |
| 7390995 | Image forming apparatus, fixing device and image heater having an adjustable exciting member An image forming apparatus includes a fixing device which fixes a toner image on a recording medium. The fixing device includes a heating device. The heating device includes a heat-generating member, an exciting member, and a changing device. The heat-generating mem... | 06/24/2008 |
| 7379699 | Fixing device and image forming apparatus A fixing device is provided with a fixing member for thermally fixing a transferred toner image to a transfer material, and a pressing member held in contact with the fixing member to form a nip portion where the transfer material is caused to pass through, wherein ... | 05/27/2008 |
| 7372008 | Image heating apparatus with electric power supply stop means An image heating apparatus has a magnetic flux generator; a heat generating element for generating heat by a magnetic flux generated by the magnetic flux generator, the heat generating element being effective to heat an image on a recording material; an electric pow... | 05/13/2008 |
| 7369802 | Fusing roller with adjustable heating area and fusing apparatus using the same A fusing roller and a fusing apparatus having the same are provided. The fusing roller includes: an induced coil, which generates an alternating magnetic flux that varies depending on an input alternating current; a heating roller, which is heated by an eddy current... | 05/06/2008 |
| 7368687 | Heating apparatus, control method for same, and image forming apparatus Provided are revolving hot roller(s) 31; heating means 33 for heating zonal portion(s) in direction(s) of revolution of hot roller(s) 31; thermistor(s) 35 which is/are temperature detection means for detecting temperature(s) of hot roller... | 05/06/2008 |
| 7366435 | Fixing controller, image forming apparatus, and fixing control method A fixing controller that utilizes an induction-heating (IH) fixing technique and a 2-CPU fixing technique is provided to reduce the control workload on the main CPU, and to perform a fine control operation, taking advantage of the temperature flexibility that is nat... | 04/29/2008 |
| 7358461 | Fuser and heatfusing control method According to a mode of the present invention, there is disclosed a fixing apparatus comprising a non-contact temperature detection section which detects a temperature by infrared rays radiated from a heating member, to made uniform a surface temperature of the heati... | 04/15/2008 |
| 7359667 | Device for heating fusing and pressure roller using inductive-heat in a fusing device for an image forming apparatus A fusing device for an image forming apparatus including a cylindrical fusing roller, a pressure roller installed opposite to the fusing roller and pressing a sheet of paper passing therebetween, and an inductive heating element simultaneously heating the fusing rol... | 04/15/2008 |
| 7355149 | Coil unit, process for producing the same, and image heating apparatus An electromagnetic induction coil unit for use with an electromagnetic induction heating-type image heating apparatus includes magnetic flux generation means comprising an exciting coil and a magnetic core; a core holder for holding the magnetic core; a coil holder ... | 04/08/2008 |
| 7348524 | Image forming apparatus An image heating device has a magnetic flux generator, a heat generating element for generating heat by a magnetic flux from the magnetic flux generator; a magnetic flux confining member, the magnetic flux confining member including a magnetic flux confining portion... | 03/25/2008 |
| 7349661 | Fusing roller and fusing apparatus using the same A fusing roller and a fusing apparatus using the same are provided. The fusing roller includes a coil unit resistance heated by a predetermined alternating current, and generating an alternating magnetic flux by the alternating current. A heating roller unit is heat... | 03/25/2008 |
| 7349662 | Fixing device and image forming apparatus An image forming unit of a copier is provided with an image fixing unit (fixing device) adopting an induction heating method. A heating roller of this image fixing unit includes a heat producing layer made of a temperature-sensitive magnetic material whose permeabil... | 03/25/2008 |
| 7338049 | Self-cooling ferrfluid seal A self-cooling ferrofluid seal includes a housing having a housing case and an external pole piece integrally connected to the housing case where the housing case has a plurality of heat dissipating surfaces, a magnetic circuit within the housing formed in conjuncti... | 03/04/2008 |
| 7339144 | Magnetic heat generation A magnetic heater is provided having a conductor assembly and a magnet assembly. The magnet assembly is adapted to rotate relative to the conductor assembly about an axis so as to induce eddy currents in the conductor assembly when relative motion is produced betwee... | 03/04/2008 |
| 7340207 | Fusing roller and fusing apparatus adopting the same A fusing roller and a fusing apparatus using the same are provided. The fusing roller includes a coil unit resistance heated by a predetermined alternating current, and an alternating magnetic flux is generated by the alternating current. A heating roller unit is he... | 03/04/2008 |
| 7335863 | Fixing device In a fixing device according to this invention, a coil bobbin around which coils are formed into a predetermined shape is formed at an induction heating portion including a plurality of coils. To minimize the axial temperature difference of a heating roller, the coi... | 02/26/2008 |
| 7333760 | Fixing device with temperature control A fixing device including a magnetic field generating device to generate a magnetic field, a fixing member to heat a recording material by heat generated in a first recording material passing area having a first width on the fixing member by electromagnetic inductio... | 02/19/2008 |
| 7329845 | Heating apparatus, control method for same, and image forming apparatus Provided are revolving hot roller(s) 31; heating means 33 for heating zonal portion(s) in direction(s) of revolution of hot roller(s) 31; thermistor(s) 35 which is/are temperature detection means for detecting temperature(s) of hot roller... | 02/12/2008 |
