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| Number | Title | Issue Date |
| 8165513 | Fixing device and image forming apparatus In an image forming apparatus having a fixing rotor (22) that is driven to rotate and fixes an image by heating a recording paper while conveying the paper pressurized against the rotor, an excitation coil (24) that is provided extending in an axial di... | 04/24/2012 |
| 8112024 | Heat fixing apparatus The heat fixing apparatus includes a fixing heater and a pressure roller. The fixing heater has a plurality of resistance-type heat generation layers which are different in heat distribution in the longitudinal direction perpendicular to the direction of conveying a... | 02/07/2012 |
| 8107871 | Apparatuses useful for printing and methods of treating marking material on media Apparatuses useful for printing and methods of treating marking material on media are provided. An exemplary embodiment of the apparatuses includes a first member including a first outer surface; and a roll including a second outer surface forming a nip with the fir... | 01/31/2012 |
| 8041279 | ISO-thermalizing graphite printer structure and method for using same An iso-thermalizing printer structure can be used to provide temperature uniformity across a width of a printer fuser roll or fuser belt. Various embodiments are contemplated, including a solid natural graphite shaft, a solid natural graphite core having a sleeve of... | 10/18/2011 |
| 7835681 | Induction heating device and induction heat fixing device An induction heating device of the invention is made to have a two-layer structure in which at an end of a magnetic core of an induction current generating coil, a litz wire of outside three turns is stacked on a litz wire of inside three turns. The width of a joint... | 11/16/2010 |
| 7764916 | Fixing device and image forming apparatus In an image forming apparatus having a fixing rotor (22) that is driven to rotate and fixes an image by heating a recording paper while conveying the paper pressurized against the rotor, an excitation coil (24) that is provided extending in an axial di... | 07/27/2010 |
| 7715774 | Image forming apparatus which controls heating width of fixing device A fixing device includes a fixing section, a sheet-width detector, a heating-width changing mechanism, a mixed feeding detector, and a controller. The fixing section includes at least a fixing member that fixes a toner image on a recording medium upon application of... | 05/11/2010 |
| 7623819 | Heater controller system for a fusing apparatus of a xerographic printing system A heater controller system for a fusing apparatus configured for fusing marking material to a substrate in a printing system includes a power source for supplying power to a heating element having at least two sections. The controller system further includes at leas... | 11/24/2009 |
| 7565103 | Device for fusing toner on print medium A fusing device for fusing a predetermined toner image on paper, and which controls the heating range of a fusing unit by inputting an eddy current generated by a transformer to a terminal corresponding to the size of paper selected from a plurality of terminals of ... | 07/21/2009 |
| 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 |
| 7424260 | Thermal fixing device and image forming device The contact rate between a heater 1 and a heater holder 2 is made higher at both ends in the longitudinal direction of the heater than at the center. Alternatively, the per-unit-length volume of the heater holder 2 in the longitudinal direction ... | 09/09/2008 |
| 7421219 | Image forming apparatus An image forming apparatus, wherein a heating member heats a toner image formed on a sheet by an image forming portion, including: a first detector detecting a temperature of a first area of a contact area, which is contactable with the sheet, of the heating member,... | 09/02/2008 |
| 7398028 | Image heating apparatus including a cooling unit adapted to cool a heating member In an image heating apparatus including a rotatable heating roller to heat an image on a recording material at a nip part, and a cooling unit to cool the rotatable heating roller, the cooling unit includes a pipe that forms a cooling loop for circulating cooling flu... | 07/08/2008 |
| 7389079 | Image heating apparatus and flexible sleeve used for the same The image heating apparatus includes a flexible sleeve including a stainless base layer; a heater being in contact with an inner circumferential surface of the flexible sleeve; and an elastic roller being in contact with an outer circumferential surface of the flexi... | 06/17/2008 |
| 7371995 | Fixing device and image forming apparatus A fixing device includes: a fixing roller; a center temperature detection unit including a protective member, the center temperature detection unit contacts the fixing roller in an axial center of the fixing roller and detects a temperature of the center section; an... | 05/13/2008 |
| 7373094 | Fixing unit having a plurality of heaters, image forming apparatus and method of determining temperature detecting position of temperature sensor A fixing unit thermally fixes a toner on a recording medium by a fixing member having a plurality of internal heaters and an outer peripheral surface, and a temperature sensor detects a surface temperature of the fixing member at a temperature detecting position. At... | 05/13/2008 |
| 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 |
| 7333743 | Fixing device, image forming apparatus including the fixing device, and fixing method A fixing device for fixing an image formed on a recording material includes first and second rotary members having a nip part therebetween, a heating part that heats the first rotary member, a center portion temperature detecting unit that detects a temperature of a... | 02/19/2008 |
| 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 |
| 7326890 | Image heating apparatus with movable electroconductive member An image heating apparatus for heating an image on a recording material has a magnetic flux generator for generating a magnetic flux; a heat generation member for generating heat by the magnetic flux generated by the magnetic flux generator; a magnetic flux adjustin... | 02/05/2008 |
| 7319840 | Induction heating fixing device and image forming apparatus An induction heating fixing device includes: a heating member for heating a recording medium while rotating along a paper passing direction, and an induction heating unit for heating the heating member, wherein: the heating unit has a plurality of induction coils ar... | 01/15/2008 |
| 7242899 | Collar assembly for printer fusing system An apparatus and method for stabilizing a fuser in an imaging apparatus. The apparatus includes a hub having a body. The body comprises an outside diameter configured to be at least partially disposed inside an end of a fuser core. The apparatus also includes an ela... | 07/10/2007 |
| 7228098 | Fusing assembly having a temperature equalizing device A fusing assembly includes (a) a first member having a first edge, a second edge and an end-to-end axis; (b) a second member having a fusing surface forming a fusing nip with the first member, and the fusing nip being located between the first edge and the second ed... | 06/05/2007 |
| 7228087 | Fixing unit with air blowing apparatus An image forming apparatus provided with a fixing unit, the fixing unit comprising: a fixing member having a heating member therein; a pressing member that presses against the fixing member, wherein an image supporting material carrying a toner image is grasped and ... | 06/05/2007 |
| 7215919 | Fixing apparatus using induction heating A fixing apparatus of one embodiment of the present invention has a heating member which is heated by induction heating, a pressing member which supplies a predetermined pressure to the heating member, and induction heating mechanisms which supply a predetermined ma... | 05/08/2007 |
| 7203438 | Image heating apparatus and heater for use therein Image heating apparatus capable of preventing an excessive temperature increase in a sheet non-passing area and heater for use in the image heating apparatus including: a substrate, a heat generating resistor formed on the substrate, and first and second electrodes ... | 04/10/2007 |
| 7199332 | Heating device and image forming device Within a fixing roller (231) are disposed a main heater lamp (234a) for heating a central portion of the fixing roller and a sub-heater lamp (235a) for heating opposite end portions of the fixing roller. MRnh, SRnh and ΣRnh satisf... | 04/03/2007 |
| 7197270 | Induction heating apparatus with rotatable magnetic flux suppressing member A heating apparatus of an electromagnetic inductive heat generating type has a coil for generating a magnetic flux, a roller member for generating heat by the magnetic flux from the coil, and heating a material to be heated, and a magnetic flux shield member for shi... | 03/27/2007 |
| 7187899 | Fuser having reduced axial temperature droop An apparatus is provided for fixing toner to a substrate including a heated fusing roller having a fusing surface. A heater element is located inside the fusing roller. A nip forming member cooperates with the fusing roller to define a fusing nip. A passive temperat... | 03/06/2007 |
| 7177563 | Apparatus for fixing toner on transferred material The present invention relates to a temperature detection apparatus having a radiant temperature detection section including at least a ray emission portion which radiates at least rays and a ray detection portion which detects the rays, and capable of detecting temp... | 02/13/2007 |
| 7155156 | Fixing apparatus A fixing apparatus according to the invention is provided with a heating roller 2 including an elastic member 2b and a metal conductive layer 2c. The elastic member has a greater outer diameter at its end portions than at its centr... | 12/26/2006 |
| 7145111 | Heater drive circuit A heater control circuit performs ON/OFF control of a switching converter for a FET so that an AC line current supplied from a DI terminal becomes approximate to a predetermined value. A current flowing to a heater is stabilized to a predetermined value, and, unless... | 12/05/2006 |
| 7142793 | Xerographic fusing apparatus with a temperature-sensitive positioning mechanism for a heating element An apparatus for fusing print sheets, such as in xerographic printing, comprises a heating element, and a temperature-sensitive mounting for the heating element. The mounting changes a position of the heating element over the course of use of the apparatus, thereby ... | 11/28/2006 |
| 7139499 | Induction heating type of fixing device and image forming apparatus equipped therewith An induction heating type of fixing device to fix a recording material having a toner image thereon, having a heating member, an induction coil divided into a plurality of parts, a temperature detector for detecting a temperature of the heating member, a signal gene... | 11/21/2006 |
| 7130555 | Fixing unit having a plurality of heaters, image forming apparatus and method of determining temperature detecting position of temperature sensor A fixing unit thermally fixes a toner on a recording medium by a fixing member having a plurality of internal heaters and an outer peripheral surface, and a temperature sensor detects a surface temperature of the fixing member at a temperature detecting position. At... | 10/31/2006 |
| 7130556 | Fixing unit A fixing device of the present invention has first and second thermistors which detect the temperatures at predetermined positions in the longitudinally direction of a heating roller, first and second coils which can increase independently the temperatures at the ce... | 10/31/2006 |
| 7107681 | Heating roller, method of producing the heating roller, and heating device, fixing device and image forming apparatus using the heating roller A heating roller including a core of hollow cylinder form and wherein a thickness of the core is thicker in a center portion thereof than in both end portions thereof. Further, a heating device may have the heating roller, a fixing device may have the heating roller... | 09/19/2006 |
| 7099616 | Heating apparatus and image heating apparatus A heating apparatus of an electromagnetic inductive heat generating type using a magnetic flux shield member, the heating apparatus including a coil for generating a magnetic flux, a roller member for generating heat by the magnetic flux from the coil, and heating a... | 08/29/2006 |
| 7082272 | Image forming apparatus An image forming apparatus is provided with a pressing roller for pressing a sheet at the time of a fixing operation; a fixing roller having a hollow portion, facing the pressing roller, rising in temperature by being heated, and fixing a developer to the sheet by s... | 07/25/2006 |
| 7081604 | Heating apparatus and image forming apparatus A heating apparatus includes a core; magnetic flux generating means having an excitation coil provided outside the core; an induction heat generating element for electromagnetic induction heat generation using the magnetic flux generated by the magnetic flux generat... | 07/25/2006 |
