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Electrophotography > Control Of Electrophotography Process > Control Of Fixing > Temperature Control Temperature ControlTemperature Control patent applications listed are from June 2005 to current and include Date, Patent Application Number, Patent Title, Patent Abstract summary and are linked to the corresponding patent application page.10/11/07 - 20070237536 - High precision-heating and fusing apparatus A high precision-heat fusing device is provided for heating unfused toner images in an electrostatographic reproducing machine. The high precision-heat fusing device includes (a) an endless rotatable shell defining an interior and having an exterior surface, a first end, a second end, and an axis for rotation; (b) a plural ... 10/04/07 - 20070230984 - Image heating apparatus and image forming apparatus An image heating apparatus comprising an endless belt for heating an image on a recording material; heating means for heating a part of the endless belt; driving means for rotating the belt; a first contact member for contacting an inner surface of the belt; stand-by control means operable in a ... 10/04/07 - 20070230983 - Image heating apparatus and image forming apparatus An image heating apparatus includes a rotatable image heating member for heating an image on a recording material; a pressing member for forming a nip, with the image heating member, in which the recording material is nipped and conveyed; heating means for heating a part of the image heating member; ... 09/27/07 - 20070223952 - Fixing device and image forming apparatus including the same The present invention realizes a fixing device and an image forming apparatus in each of which (i) the amount of power consumption is small and (ii) a wait time from when a command for starting printing is inputted until when printing is started is short. The fixing device of the ... 09/13/07 - 20070212092 - Image forming apparatus According to an aspect of the present invention, an image forming apparatus comprising: a heater heating unit configured to heat a heater at a first temperature or a second temperature lower than the first temperature when waiting for fixation of a formed image; and a heat control unit configured to ... 09/13/07 - 20070212091 - Heating apparatus and induction heating control method In an aspect of this invention, a fixing device includes a heating member including a first area and a second area formed of conductive members (e.g., aluminum and iron) having different magnetic permeability ratios, and an induction heating unit which generates a magnetic field from a coil to induction-heat this ... 08/16/07 - 20070189795 - Power control method and apparatus to heat a heating roller A power control method and apparatus to heat a heating roller. The power control method includes heating a heating roller provided to fix a toner image of print data in an image forming apparatus, the heating roller having a heating resistor to receive roller power, the power control method includes ... 08/09/07 - 20070183806 - Heating apparatus, fixing apparatus, and image forming apparatus A heating apparatus includes a heating roller that is heated by heating units, a main power supply that supplies power from an external power supply to the main heating unit, and an auxiliary power supply that supplies power to the auxiliary heating unit. The auxiliary power supply further includes a ... 07/19/07 - 20070166067 - Fixing device A fixing device for infallibly reduce the heating output without using a control circuit if an excessive temperature rise of a rotary heating member is predicted even if the control circuit fails or runs away. In the fixing device (200), heating of a fixing belt (230) for heat-fixing an unfixed ... 06/21/07 - 20070140719 - Image forming apparatus The aim of the present invention is to provide an image forming apparatus that accurately detects surface temperature of a rotating body using a noncontact temperature detection section and corrects the detected temperature according to the temperature of the surrounding area. The present invention detects the temperature of a thermal ... 06/21/07 - 20070140718 - Multivariate predictive control of fuser temperatures A fusing apparatus includes a fuser roll and a pressure roll which define a nip therebetween. Two heating elements heat the fuser roll. One of the heating elements is configured for heating a first portion of the fuser roll while a second of the heating elements is configured for heating ... 06/21/07 - 20070140717 - Image forming apparatus and image forming method An image forming apparatus includes image forming means for forming an image on a recording material; a plurality of image heating means for sequentially heating an image on the recording material ; and switching means for switching a number of the image heating means to be used for heating the ... 06/14/07 - 20070134018 - Fuser apparatus, image forming apparatus including the fuser apparatus, and fuser controlling method A fuser apparatus including: a fuser member having an endless contact surface to be brought into contact with each of successively transported recording media and a non-contact surface and being arranged to apply heat to the recording medium from the contact surface to fix a toner on the recording medium; ... 06/14/07 - 20070134017 - Fixing device and image forming apparatus A fixing device includes a pressure thermister for detecting temperature of a pressure roller. The fixing device also includes a thermal coating member on the opposite side of the pressure roller with respect to the pressure thermister. The thermal coating member has a thermal conductivity of 10 W/m·K or more. ... 05/31/07 - 20070122173 - Temperature control device, temperature control method, fixing device, image forming apparatus, temperature control program, computer-readable recording medium, and computer data signal The present invention carries out temperature detection and temperature control accurately in a temperature control device using a noncontact-type temperature detecting section. The temperature control device obtains the surface temperature of a fixing roller by using a temperature correspondence table in which correspondences between output voltage values of a main ... 05/24/07 - 20070116485 - Fixation heater control method and image formation device The present invention employs novel phase control for a fixing heater, which uses first and second heaters, to reduce the generation of a higher harmonic wave current and a power line terminal noise. With four consecutive half wavelengths (two cycles) of a power supply voltage employed as a period, two ... 05/17/07 - 20070110466 - Fixing apparatus and image forming apparatus In a fixing apparatus comprising a heating roller 1, a pressure roller 2, an induction coil 3a that generates magnetic flux, and a temperature detection member (such as a thermistor) 5 that detects the temperature of the heating roller 1, in which the heating roller 1 is caused to generated ... 04/26/07 - 20070092278 - Image forming apparatus, fixation device and heat control method for a fixation device An image forming apparatus comprising a fixation device having a heating part for heating and fixing a toner image formed on a recording medium is provided, which comprises a rotational velocity detecting part for detecting a rotational velocity of a conveyance roller for conveying the recording medium and a control ... 04/26/07 - 20070092277 - Fixing device and image forming apparatus 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 ... 04/19/07 - 20070086804 - Fusing device of electro-photographic image forming apparatus having temperature sensor protecting structure A fusing device of an electro-photographic image forming apparatus is provided having a temperature sensor protecting structure. The fusing device includes a heat roller having a heater and a pressure roller rotating opposed to the heat roller. A temperature sensor housing accommodates a contact-type temperature sensor. A coil spring elastically ... 04/19/07 - 20070086803 - Image-heating device with a first heating member and an adjustable second heating member An image-heating device has a detector for detecting the state of a recording medium at a position between a first fixing unit and a second fixing unit along a conveying path of the recording medium and a controller for controlling a fixing condition of the second fixing unit on the ... 03/15/07 - 20070059013 - Image forming apparatus In an image forming apparatus including a fixing device that uses a pressure belt as at least one of two pressing members, a warm-up time and time for shifting to a standby state are reduced with simple control without increasing power consumption. The two pressing members are brought into a ... 03/15/07 - 20070059012 - Image heating apparatus An image heating apparatus including: an image heating member, which heats an image on a recording material in a nip portion; an air blower, which blows air toward an air blowing port to cool a predetermined area of the image heating member; and a shutter, which opens and closes the ... 03/15/07 - 20070059011 - Image fixing apparatus and image forming apparatus capable of effectively controlling an image fixing temperature An image fixing apparatus controls temperature of a rotating member for fixing with compensation for delay by using a Smith predictor with a controlled object model to reduce temperature ripple effectively. In one example, the image fixing apparatus includes a pair of rotating members to form a nip portion, a ... 03/15/07 - 20070059010 - Image heating apparatus An image heating apparatus including: a heating rotary member, which heats an image on a recording material in a nip portion; an air blowing unit, which blows air toward an air blowing port to cool a predetermined area of the heating rotary member; and a shutter, which opens and closes ... 03/15/07 - 20070059009 - Image heating apparatus An image heating apparatus includes a heating rotatable member for heating, in a nip, an image on a recording material; a heater for heating the image heating member; a cooling device for cooling the image heating member, wherein when a target temperature of the image heating member is changed to ... 03/08/07 - 20070053708 - Image forming apparatus including a plurality of heating devices for heating recording sheet A first heating device heats a recording sheet having a developer image formed thereon, and a cooling device cools the recording sheet having been heated. A second heating device heats the recording sheet having been cooled, thereby giving gloss to the image on the recording sheet. A cooling capability of ... 03/01/07 - 20070047991 - Fixing apparatus, image forming apparatus and fixing apparatus heating method 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 ... 03/01/07 - 20070047990 - Method for minimizing temperature droop in a fuser A method of controlling a fuser assembly within an image forming apparatus having a fuser assembly including a heating member and a backup member cooperating with the heating member to form a nip therebetween for fusing images onto substrates passing through the nip. The method is provided to minimize or ... 02/22/07 - 20070041742 - Image forming apparatus and fixing apparatus thereof An image forming apparatus includes a heating roller part to fix developer to a printing medium, a heating part to heat the heating roller part, a power supplying part to supply electric power to the heating part, and a controlling part to control the heating roller part to have a ... 02/15/07 - 20070036573 - 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 least one first heater, of the ... 02/15/07 - 20070036572 - Fixing apparatus An embodiment of a fixing apparatus according to the present invention is a fixing apparatus provided with a roller for fixing and a plurality of heat sources that heat a surface of the roller, in which a surface temperature of the roller is detected and controlled at a prescribed temperature ... 02/15/07 - 20070036571 - Fixing deviceand fixing method and image forming device A fixing device (23) of the present invention includes a fixing roller (131) contacting a toner image surface, and a pressure roller (132) contacting a surface opposite to the toner image surface. In the fixing device (23), a printing sheet (P) on which unfixed toner image is formed passes through ... 02/15/07 - 20070036570 - Image heating An image heating apparatus is provided that enables the temperature of an image heating element to be maintained stably at a target temperature even when the fixing speed varies, and that enables lower cost and higher efficiency to be achieved. In this apparatus, with a calorific value control section 300 ... 02/08/07 - 20070031159 - Heating device, fixing device and image forming apparatus A heating device, a fixing device and an image forming device are disclosed for making the life-span of a capacitor thereof longer. The heating device includes a heating part having at least one heat generation part generating heat, an electricity storage device supplying electric power at a variable output voltage ... 01/11/07 - 20070009275 - Image forming apparatus This is an image forming apparatus for surely detecting that a recording medium collides with a recording head, regardless of the type and lift-up shape of the recording medium. A recording medium carried out of a recording medium tray by a pair of pick-up rollers is sent to an image ... 01/11/07 - 20070009274 - Fusing device for instantly controlling power A device for fusing and fixing a transferred toner of a predetermined image onto a print paper is provided. In particular, a fusing device which can instantly control induced current provided to a fusing unit in an image printing apparatus which heats the fusing unit using the induced current is ... 01/11/07 - 20070009273 - Image forming apparatus with heating unit control function An image forming apparatus having a heating unit control function in accordance with the present invention energizes one of a plurality of heating units designated by a sequence counter to be energized, halts energize of the heating unit if the time counter finishes the count of the heating period assigned ... 12/28/06 - 20060291884 - Image forming apparatus An image forming apparatus that includes: a reading unit; an image forming unit that forms an image on a sheet; a fixing unit; a mode selecting unit that selects a first mode from plural modes, in the first mode of which a document is read by the reading unit and ... 12/28/06 - 20060291883 - Image formation apparatus and controlling method of fixing roller An image formation apparatus and a method of controlling a fixing unit thereof. The image formation apparatus includes: a fixing unit of applying a heat for fixing a toner on a sheet, and having a heating element mounted at one side of the fixing unit; a switch of controlling supplying ... 11/30/06 - 20060269308 - Temperature detector and fixing device provided therewith A temperature detector 163 according to the invention is so configured as to include a polyimide sheet 163a on which a temperature detection part 163b is mounted, the temperature detection part 163b which is provided on the polyimide sheet 163a and which is composed of a thermistor or the like ... 11/09/06 - 20060251440 - Image forming apparatus The present invention relates to an image forming apparatus that enables the occurrence of print defects due to a first print start time delay to be eliminated without using a temperature sensor that has a small thermal time constant. When the temperature of a fixing belt serving as an image ... 11/02/06 - 20060245779 - Fuser and temperature control method According to one aspect of the present invention, there is provided a fixing apparatus having a non-contact temperature detecting unit which detects temperature by sensing infrared rays emitted from the a heating roller. A difference between a real temperature and the temperature detected by the non-contact temperature detecting unit, which ... 11/02/06 - 20060245778 - Image heating apparatus An image heating apparatus includes an endless belt member; at least two support members, for supporting the belt member, disposed inside the belt member; and an induction heating member, for heating the belt member, disposed opposite to an intermediary portion of the belt member extending between the support members. The ... 11/02/06 - 20060245777 - Roller structure A first roller member is adapted to be fitted on a roller shaft, and includes at least one first portion, extending in a circumferential direction of the roller shaft, and having a first thickness in a radial direction of the roller shaft, and at least one second portion, extending in ... 10/05/06 - 20060222395 - Image forming apparatus A machine (1) has a capacitor switch (20) for switching between a side to drive a first fixing heater (17) by a capacitor (18), and a side to charge the capacitor (18). A battery switch (25) switches between a side to drive a second fixing heater (22) by a battery ... 09/21/06 - 20060210294 - Heating apparatus, heating apparatus control method and noncontact thermal sensing device A fixing apparatus according to one aspect of the present invention comprises a non-contact temperature detecting element 81 allocated in non-contact with a heat roller, the sensing element detecting a temperature of the heat roller. The non-contact temperature sensing section 81 comprises a thermopile P which detects a target temperature ... 09/21/06 - 20060210293 - Fixing apparatus and heating apparatus control method A fixing apparatus according to one aspect of the present invention comprises a first non-contact temperature detecting section which detects a surface temperature of a heat roller in the vicinity of a heating apparatus, a second non-contact temperature detecting section which is provided in non-contact with a surface of each ... 09/21/06 - 20060210292 - Fixing device of image forming apparatus A fixing apparatus of an image forming apparatus of the present invention, in arrival timing of a temperature falling area of a heat roller passing a nip at opposite position γ of an induction heating coil from temperature detection position β by an infrared temperature sensor around the heat roller, ... 09/14/06 - 20060204266 - Image recording apparatus The image recording apparatus according to the present invention includes a plurality of heater members 34, 35 having different heat distributions, a temperature detecting unit 36 for detecting a temperature of an area where a print medium passes through, a heat controlling unit 51 for controlling a fusing unit at ... 09/14/06 - 20060204265 - Belt type fixing device for use in an image forming apparatus A belt type fixing device of the present invention includes a fix roller, a press roller rotatable in pressing contact with the fix roller, a heat roller accommodating a heat source therein and a belt passed over the fix roller and heat roller. A non-contact type temperature sensor is positioned ... 09/07/06 - 20060198652 - Fixing apparatus and image forming apparatus A temperature of a heating roller is detected by a thermistor and an amount of variation per unit of time of the detected temperature is detected. The output of a coil is increased or decreased by an amount corresponding to an amount of the detected temperature variation, while the temperature ... 09/07/06 - 20060198651 - Image forming apparatus, and storage medium storing a control program for the same An image forming apparatus is disclosed which interrupts the power supply to the sensors that are used during image formation when it is impossible to form an image, thereby allowing the image forming apparatus so save energy more effectively. The image forming apparatus controls the power supply to sensors that ... 08/03/06 - 20060171731 - Fixing apparatus and image forming apparatus An image forming apparatus includes a first heater that heats a heating member, a second heater that heats a support member, and a third heater that heats a facing member. The image forming apparatus further includes a fixing belt wound around between the heating member and the support member, and ... 07/27/06 - 20060165429 - Image forming apparatus, fixing unit having a selectively controlled power supply and associated methodology A fixing unit for use in an image forming apparatus includes a fixing member, a heating source, and a controller. The fixing member is supported rotatably. The heating source heats the fixing member. The controller controls power supply to the heating source. The controller controls a first average power supply, ... 07/27/06 - 20060165428 - Fixing apparatus and image forming apparatus A signal-processing circuit 94 of a simple structure is provided, which generates an operation control signal and a designation signal in accordance with the temperatures detected by temperature sensors 13, 14. The operation control signal and designation signal output from the signal-processing circuit 94 selectively drive a center coil 4 ... 07/20/06 - 20060159479 - Fixing device The present invention provides a fixing device for fixing a toner image formed on paper by sandwiching the paper in a nip region between a heating roller and a pressing roller and pressing the paper while heating the paper to a fixing temperature. This fixing device includes a cleaning roller ... 07/20/06 - 20060159478 - Fixing apparatus and image forming apparatus If the temperature T1 of the middle part of a heat roller 2 is higher than the temperature T2 of the end parts of the heat roller 2 [T1≧(T2−X)], the operating time B of side coils 5 and 6 is set longer than the operating time A of a center ... 07/06/06 - 20060147221 - 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 is applied, a fixing belt 112 is an ... 06/29/06 - 20060140657 - Fixing device and image forming apparatus A fixing device has a magnetic field generator; an electric power supplier for electric power supply to the magnetic field generator; electric power controller for controlling an electric power value to be supplied by the electric power supplier; a fixing member, disposed in the magnetic field, having an electroconductive layer ... 06/29/06 - 20060140656 - Fixing device built in electrophotographic image forming apparatus, temperature control method for fixing device, and recording medium having embodied thereon computer program for the same A fixing device built in an electrophotographic image forming apparatus and a temperature control method for the fixing device are provided. The fixing device comprises a power supplying unit for supplying power to the fixing device; a control variable determination unit for determining control variables corresponding to operating states of ... 06/15/06 - 20060127119 - Image forming apparatus An image forming apparatus includes a fixing device for fixing developer on a recording medium; a heating device for heating the fixing device; a cooling device for cooling the fixing device; a temperature detecting device for detecting a temperature of the fixing device; a heating device control unit for controlling ... 06/15/06 - 20060127118 - Image forming apparatus and method to supply power to a fixing device A fixing device for fixing an image formed on a recording material in an image forming apparatus includes a fixing member configured to fix an image formed on the recording material, a heating part that heats the fixing member, a storage unit that is charged by an external power source ... 06/08/06 - 20060120745 - Fixing mechanism for use in image forming apparatus A heating apparatus includes first and second coil members, a heat roller and an input control mechanism. The first and second coil members respectively are part of first and second excitation circuits. The heat roller generates an eddy current inside by a magnetic field generated by the first and second ... 06/01/06 - 20060115289 - Image forming apparatus A fixing device for an image forming apparatus includes a heating roller and a press roller. The press roller is pressed against the heating roller, and the heating roller and the press roller operate to fix an image on a document. The fixing device also includes a heat source that ... 05/11/06 - 20060099002 - Fixing unit, image forming apparatus including the same, and method of controlling the fixing unit A fixing unit, an image forming apparatus including the same, and a method of controlling the fixing unit are provided. The fixing unit includes a heating element to apply heat to a printing medium to fix a transferred image thereon, a temperature sensor to sense temperature of the heating element, ... 05/11/06 - 20060099001 - Image heating apparatus and image forming apparatus A fixing unit is provided with a fixing belt that heats recording paper that bears and moves a toner image, an exciting coil that generates magnetic flux in the fixing belt and causes the fixing belt to produce heat by electromagnetic induction, and a heat production adjustment section that adjusts ... 05/04/06 - 20060093388 - Power supply apparatus and heating apparatus and image forming apparatus A period of a first edge, a voltage change in a first direction of a first pulse signal fed from a zero-crossing detecting circuit, is detected. A second edge, a voltage change in a second direction opposite to the first direction, is generated when a time period equal to half ... 04/27/06 - 20060088329 - Image forming apparatus An image heating apparatus includes a coil for generating a magnetic flux by current flowing therethrough; an image heating member for heating an image on a recording material which is fed therethrough, the image heating member producing heat by eddy current generated by the magnetic flux; electric power supply control ... 04/27/06 - 20060088328 - Image forming apparatus An image forming apparatus includes image forming means for forming an image on a recording material; a heating rotatable member for heating the heating nip on the upper in a heating nip; magnetic flux generating means for generating a magnetic flux for induction heat generation in the heating rotatable member; ... 04/27/06 - 20060088327 - Image heating apparatus An image heating apparatus includes a coil for generating a magnetic flux by a current flowing therethrough; an image heating member having an electroconductive layer in which an eddy current is produced by the magnetic flux by which heat is generated, the image heating member being effective to heat an ... 04/27/06 - 20060088326 - Fixing apparatus A fixing apparatus of an image forming apparatus with high productivity for heavy paper is provided that prevents an abnormal temperature rise of a heated material after a continuous printing operation of heavy paper ends. If the value of a temperature sensor that is provided in a non-passing region of ... 04/20/06 - 20060083529 - Fixing apparatus, and image forming apparatus Disclosed is a fixing apparatus which includes a first rotatable member having an endless configuration, a second rotatable member in pressure contact with the first rotatable member which causes a recording material bearing an image to be nipped and conveyed at a pressure contact portion between the first and second ... 04/13/06 - 20060078344 - Image forming apparatus This invention is intended to control the amount of power to be supplied to a fusing heater below a maximum applicable current value. The engine controller supplies electricity to both of two heating bodies at the same fixed duty D1. At a phase angle al corresponding to the fixed duty ... 03/30/06 - 20060067721 - Fixing unit and image forming apparatus equipped with the fixing unit A fixing unit for an image forming apparatus passes a recording medium with a unfixed toner image through between a pair of rotating bodies to fix the unfixed image to the recording medium. The fixing unit comprises a first heater for heating up one of the rotating bodies, a second ... 03/23/06 - 20060062586 - Apparatus for fixing toner on transferred material The present invention relates to a fixing apparatus which radiates rays to a detection object and which detects the rays returned from the detection object to obtain a temperature signal. The apparatus specifies a radiant ratio of the surface of the detection object using at least one of accumulated image ... 03/23/06 - 20060062585 - 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 temperature without contacting a detection object, a first atmospheric temperature ... 03/16/06 - 20060056870 - Image forming apparatus and temperature control method for fixing device At a time of start of a heater alternate turn-on control, if a main heater detection temperature by a main thermistor is higher than a MAIN target temperature tmh and a sub-heater detection temperature by a sub-thermistor is lower than a SUB target temperature tsh, an engine control unit switches ... 03/09/06 - 20060051120 - 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 center portion of the first rotary ... 03/09/06 - 20060051119 - Method for supplying power, and fixing and image forming apparatuses A fixing apparatus includes a first heat generating member that generates heat upon receiving power from a commercial power source, an electrical condenser that stores charge when charged by the commercial power source, and a second heat generating member that generates heat upon receiving power from the electrical condenser. A ... 03/09/06 - 20060051118 - Image forming apparatus and image forming method The invention provides a fixing apparatus fixing apparatus having a heating portion for heat fixing an unfixed developer borne on a recording material, including: a first heating member and a second heating member provided in the heating portion; and a current control unit which controls an AC current to be ... 03/09/06 - 20060051117 - Heating apparatus and image forming apparatus The heating apparatus has a heating member and a pressure member which are mutually pressure-welded to hold and convey and heat a heated member to be heated by a nip portion formed between the heating member and the pressure member, includes a temperature detector, power control means, and a curl ... 02/23/06 - 20060039713 - 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 a fixing member disposed on a recording material conveyance path, a heating part that heats the fixing member to fix the image formed on the recording material by heat, and a storage unit that is charged by ... 02/23/06 - 20060039712 - Method and apparatus for reducing surface temperature variation of an externally-heated fusing roller Reducing variation in the surface temperature of an externally-heated fusing roller (42) in an electrophotographic machine, the variation typically occurring during the beginning of a fusing run, by detecting the beginning of a fusing run and applying a modified fusing temperature set-point characteristic (10) to the fusing roller (42). The ... 01/19/06 - 20060013607 - Fixing device and image forming apparatus using the same A fixing device of the present invention includes a fixing roller 50, a press roller 70, a heat roller 60 provided with a heat source therein, and a fixing belt passed over the fixing roller and heat roller. At least one of the fixing roller 50 and press roller 70 ... 01/12/06 - 20060008286 - Image-forming apparatus and image-forming method In an image-forming apparatus, a temperature sensor is situated in the position where the sensor is insusceptible to steam. The position is, for example, a portion, of a discharge-sensor lever, where a printing material abuts on the discharge-sensor lever. Accordingly, the temperature sensor becomes insusceptible to steam, whereby the image-forming ... 01/05/06 - 20060002730 - Fixing device and image forming apparatus A fixing device has a magnetic field generator; an electric power supplier for electric power supply to the magnetic field generator; electric power controller for controlling an electric power value to be supplied by the electric power supplier; a fixing member, disposed in the magnetic field, having an electroconductive layer ... 12/29/05 - 20050286921 - Image formation apparatus with temperature controller In a temperature detector a smoother circuit receives a pulse signal generated by a pulse signal generation circuit to smooth the signal and transmit it to a first node. A comparator compares a level in voltage transmitted on the node with that in voltage on a second node connected to ... 12/29/05 - 20050286920 - Fixing device, transfer fixing device, and image forming apparatus 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 induction heat generation by the magnetic field formed ... 12/29/05 - 20050286919 - Fixing device and control method therefor Following the end of warm-up, a control unit confirms whether the warm-up time is 10 seconds or more. If the warm-up time is 10 seconds or more, the control unit controls a maximum lamp turn-on time for alternate turn-on at 1.0 second as long as an idle time (t) from ... 12/15/05 - 20050276625 - Printing apparatus, fusing apparatus, and method of controlling fusing temperature of printing apparatus A printing apparatus including a heat roller, a pressure roller, a fusing apparatus, and a method of controlling a fusing temperature of the printing apparatus. The printing apparatus includes a heat roller, a first temperature sensor which senses a temperature of the heat roller, a first heat source which is ... 12/15/05 - 20050276624 - Image heating apparatus and fixing apparatus An image heating apparatus including: a first image heating unit for heating a toner image on a recording material; a second image heating unit for heating the toner image on the recording material heated by the first image heating unit; and a detecting unit for detecting a temperature of the ... 12/01/05 - 20050265743 - Image-forming device A laser printer capable of controlling the operation of a fixing heater to heat a roller, including an energizing circuit for energizing a heater, a temperature detecting circuit such as thermistors, a noise canceling circuit, and a control circuit for controlling the energizing circuit and the heater. After receiving a ... 12/01/05 - 20050265742 - Method for controlling fusing temperature and blower speed based on toner coverage computed from data to be printed and apparatus using the same A method for controlling the fusing temperature and blower speed based on toner coverage computed from data to be printed and apparatuses using the same. The apparatus for controlling a fusing temperature based on a computed toner coverage has a memory for storing a reference fusing temperature by toner coverage, ... 12/01/05 - 20050265741 - Image forming apparatus An image forming apparatus has a heating rotator 12 that is heated by a first heat source 18, a pressurizing rotator 24 that is heated by a second heat source 28, that is in pressure contact with the heating rotator 12, and that forms a fixing nip 26 between the ... 10/13/05 - 20050226645 - Image forming system An image forming system has: a manuscript image reading device to scan a manuscript and obtain shade information on the manuscript; an exposure/development device to record a charged latent image in a photosensitive body based on the shade information obtained by said manuscript image reading device, to apply toners to ... 10/06/05 - 20050220474 - Image forming apparatus, power supply control method, and power supply control program An image forming apparatus for forming an image with a fixing member, which fixing member includes a first heating member and a plurality of second heating members is disclosed. The image forming apparatus includes a capacitor, a charging part for charging the capacitor, a first drive part for lighting on/off ... 09/29/05 - 20050214014 - Apparatus and process for fuser control The invention is in the field of fusing and fusing apparatus for print media, particularly for fusing toner to print media and other variations. According to various aspects of the invention, an improved temperature control is provided for a fusing apparatus wherein control is prioritized. According to various further aspects ... 09/29/05 - 20050214013 - Standby temperature control to minimize fuser droop and overshoot A method of operating an electrophotographic printer and particularly the fuser thereof, includes preheating a heated roller of the fuser to a preheat temperature greater than the maximum target temperature for fusing, but less than the maximum temperature of a temperature range for proper fusing. During prolonged standby, the heated ... 09/29/05 - 20050214012 - Fixing device of image forming apparatus employing electro-photographic process and controlling method of the same At least, a temperature of the surface of a heating roller 13 in a region through which paper of small width passes, and a temperature of the surface of a heating roller 13 in a region through which paper of small width does not pass where paper of large width ... 09/22/05 - 20050207775 - Image forming apparatus performing improved fixing temperature control An electrophotographic image forming apparatus includes a device to set a temperature correspondence electrifying duty ratio relative to a fixing heater of a fixing device according to a detected temperature of the fixing device. A device is included to set a power corresponding electrifying duty ratio relative to the fixing ... 09/22/05 - 20050207774 - Fuser and temperature control method According to one aspect of the present invention, there is provided a fixing apparatus having a non-contact temperature detecting unit which detects temperature by sensing infrared rays emitted from the a heating roller and a difference between real temperature and the temperature detected by the non-contact temperature detecting unit, produced ... 09/22/05 - 20050207773 - Image forming apparatus, image forming method, and fixing device thereof An image forming apparatus having a forming unit which forms an image onto a recording medium on the basis of acquired image information, a fixing unit which fixes the formed image by heating the recording medium onto which the image has been formed by the forming unit, and a control ... 09/22/05 - 20050207772 - Fixing apparatus and image forming apparatus A temperature T of the heating roller 2 is detected by a thermistor 10 and an amount of variation (ΔT/AΔ) per unit time t of the detected temperature T is detected. The output of a coil 4 is increased or decreased by an amount corresponding to an amount of detected ... 09/15/05 - 20050201769 - Image fixing device with phase controlled heaters An image fixing apparatus has a first rotatable member heated by a first heater and a first temperature detecting element for detecting its temperature; a first controller for controlling electric supply to the first heater to maintain a detected temperature of the first temperature detecting element at a first target ... 09/15/05 - 20050201768 - Image heating apparatus PID control performs integral control using an integral value of a deviation between a set temperature and current temperature, and therefore when a proportionality factor Kp is large, a fixing belt 230 reaches a target temperature quickly but a subsequent overshoot increases. On the other hand, when the proportionality factor ... 09/15/05 - 20050201767 - Image forming apparatus An image forming apparatus for performing thermal fixing of toner images, including a fixing section, a heating section, a power supply section and a control section, wherein when the control section controls the power supplying section to start supply of the electric power to the heating section, the control section ... 09/01/05 - 20050191075 - Image forming apparatus having temperature sensing element for sensing temperature of recording material According to the present invention, a temperature sensing part of temperature sensing means is arranged to come into contact with the surface opposite to the image surface of a recording material at the time of one-sided printing without providing such an opposed member that comes into contact with the image ... 09/01/05 - 20050191074 - Image forming apparatus and method of controlling a heating unit An image forming apparatus according to an embodiment of the present invention can suppress overshoot by shifting the OFF timing of the central heater lamp from that of the end heater lamp or the recovering timing of the central heater lamp from that of the end heater lamp, when the ... 08/25/05 - 20050185978 - Image fixing apparatus capable of changing surface condition of fixing rotary member and fixing rotary member for use therein The present invention provides a fixing apparatus including a rotatable member, a heater for heating the rotatable member, and control means which controls a heat generation of the heater, wherein a toner image on a recording material is heated by the rotatable member, the apparatus has a surface condition changing ... 08/25/05 - 20050185977 - Fixing device and image forming apparatus A center thermostat (16) corresponding to a center heater in a heat roller (10) and a side thermostat (17) corresponding to a side heater in the heat roller (10) are so installed that the distances to the center heater (11) and side heater (12) are equal in the diameter direction ... 08/18/05 - 20050180768 - Image forming apparatus An image forming apparatus has a fixing unit that fixes a developer transferred onto a print medium. The apparatus includes a temperature detector and a movement detector. The temperature detector has a thermistor that detects a temperature of or near a fixing member. The movement detector detects that the thermistor ... 08/11/05 - 20050175369 - 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 center and the end of the heating roller, a driving circuit ... 08/11/05 - 20050175368 - Image forming apparatus Power is supplied from a capacitor of an auxiliary power source to a secondary heating element of a heating unit, thereby preventing temperature drop of a fixing roller at the time of continuous paper delivery. An allowable range for starting discharge from the capacitor is set to, for example, 30 ... 08/11/05 - 20050175367 - Fixing device, image forming apparatus, and fixing method A center thermistor 13 associated with a center heater 11 within a heat roller 10 and a side thermistor 14 associated with a side heater 12 within the heat roller 10 are arranged in phase in a circumferential direction of the heat roller 10. In standby state, in a period ... 08/04/05 - 20050169656 - Image heating apparatus having heater for externally heating fixing roller The image heating apparatus for heating a toner image formed on a recording material, comprising, a rotatable member; heating device for heating an outer peripheral surface of the rotatable member, the heating device including a heater for forming a heating nip portion in cooperation with the rotatable member; back-up device ... 08/04/05 - 20050169655 - Image forming apparatus and its control method There are provided an image forming apparatus which can implement on-demand fusing with quick rise in temperature by using the upper current (power) limit of a commercial power supply more effectively and a control method for the apparatus. This image forming apparatus includes a rechargeable battery device capable of charging ... 07/28/05 - 20050163524 - Fixing device and image forming apparatus A fixing device includes a non-contacting thermistor (54) disposed in the vicinity of the surface of a heat roller (21) and an upper cover temperature thermistor (60) for detecting the temperature of a pressure roller (22). The calculated surface temperature (T) of the heat roller 21 is calculated based on ... 07/28/05 - 20050163523 - Image heating apparatus and heater for use therein Rc/Rt≦1/30. ... 06/30/05 - 20050141914 - Fixing device of image forming apparatus An image forming apparatus includes a fixing device having a pressure roller. The surface of the pressure roller is coated with a PFA resin and has an average surface roughness Ra of 0.05 to 0.13 μm. A thermister is provided to detect the surface temperature of the pressure roller. The ... 06/30/05 - 20050141913 - Method of controlling temperature of fuser of image forming apparatus A method of controlling temperature of a fuser of an image forming apparatus. The fuser controlling method comprises measuring the temperature of the fuser, comparing the measured temperature with a previously measured temperature and determining whether the temperature of the fuser is ascending or descending to differentiate a temperature ascending ... 06/23/05 - 20050135827 - Image forming apparatus In an image forming apparatus having single-color mode and full-color mode, to maintain an excellent fusing property of the single-color image and the full-image even on the condition that the temperature of the fixing member is easy to fall, when the temperature of the fusing roller lowers during the image ... 06/09/05 - 20050123315 - Heating device, fixing device using the heating device and image forming apparatus using the fixing device A heating device including a main power source; a sub power source including a capacitor capable of charging and discharging; a heating member including a main heater and an auxiliary heater and configured to heat a material with the heater and the auxiliary heater, wherein the main heater and the ... 06/09/05 - 20050123314 - Method and apparatus for image forming capable of effectively performing an image fixing An image forming apparatus includes an image forming mechanism and an image fixing mechanism which includes a fixing member, a capacitor, a charger, a first heater, a second heater, a sensor, and a controller. The charger charges the capacitor with a first electric power. The first heater heats-the fixing member ... 06/02/05 - 20050117930 - Image forming apparatus and control method thereof An update value for updating a count value is changed in accordance with the time interval of activations of a fixing unit. Every time the fixing unit is activated, the count value is updated in accordance with the update value. The target temperature of the heater of the first rotary ... ### FreshPatents.com Support |