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| Number | Title | Issue Date |
| 8112010 | Energization control device and image forming apparatus A heating unit heated upon receiving power supplied from an AC power supply, a temperature detecting unit detecting the temperature of the heating unit, a memory storing power energization pattern in which power energization and non-power energization are performed ... | 02/07/2012 |
| 8112009 | Electrophotographic apparatus having fuser temperature control and corresponding methods Disclosed are a method of forming images on media in an electrophotographic apparatus, and corresponding electrophotographic apparatus. The method includes measuring a temperature of the media with a sensor after the toner particles have been fused to the media, and... | 02/07/2012 |
| 8107843 | Digital fuser using micro hotplate technology In accordance with the invention, there are printing apparatuses and methods of marking and forming an image. The printing apparatus can include one or more digital heating elements disposed in a fuser subsystem, the digital heating element can include an array of h... | 01/31/2012 |
| 8103183 | Heater control with varying control cycle and lighting pattern A heater controlling apparatus for controlling supply of alternating current power to at least one heater that heats a heating object includes a detection unit configured to detect a temperature of the heating object, a determining unit configured to determine a pro... | 01/24/2012 |
| 8099008 | Image heating apparatus with control means for controlling power to the coil that generates magnetic flux 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 hea... | 01/17/2012 |
| 8095029 | Controlling fixing device temperature of an image forming apparatus based on target temperature An image forming apparatus which is capable of accurately detecting the temperature of a fixing roller by a simple circuit configuration without causing a scratch on the surface of the fixing roller. A detection sensor is disposed in a state not in contact with a he... | 01/10/2012 |
| 8095030 | Fixing device and image forming apparatus using the same A fixing device including a fixing member to melt a toner so as to fix a toner image onto a recording medium, a temperature sensor to detect a temperature of the fixing member, and a heater to heat the fixing member based on the temperature detected by the temperatu... | 01/10/2012 |
| 8081893 | Electrophotographic image forming apparatus with improved temperature control An image forming apparatus is provided that has a first pressurizing member, a heating member, and a belt member laid across the heating member and the first pressurizing member in a tensioned state, the belt member being heated by the heating member. The apparatus ... | 12/20/2011 |
| 8078074 | Image forming apparatus and image forming method An image forming apparatus has: an intermediate transfer body which carries an image; a transfer mechanism which transfers the image carried on the intermediate transfer body, onto a transfer surface of a recording medium fixed to a surface of a rotating body; and a... | 12/13/2011 |
| 8078073 | Temperature control of a fixing apparatus using an induction heating system In a fixing apparatus of an embodiment of the invention, a heat roller forwardly and reversely rotated by a drive motor capable of forwardly and reversely rotating is heated by an induction heating coil also when it is reversely rotated. Further, the roller control ... | 12/13/2011 |
| 8068758 | Belt conveyance apparatus and image heating apparatus The image heating apparatus has a plurality of heat generators which are capable of forming a plurality of heat generating distributions in the longitudinal direction for supplying heat to a heating member. Unevenness in temperature is decreased by changing the heat... | 11/29/2011 |
| 8059983 | Phase detecting device, phase control device including the phase detecting device, and fuser control device including the phase control device A phase detecting device includes a power input unit that receives an AC voltage; a phase detector that detects zero-crossing points of the AC voltage, and outputs a phase detecting signal when the zero-crossing points of the AC voltage are detected; and a power swi... | 11/15/2011 |
| 8050583 | Fixing device having heaters controlled based on temperatures detected by first and second temperature detectors A fixing device, an image forming apparatus using the fixing device, and a temperature control method therefor. The fixing device includes a fixing roller, a heat roller including first and second heat sources, a fixing belt, a pressure roller including a pressure h... | 11/01/2011 |
| 8041245 | Apparatuses useful in printing and methods of controlling the temperature of surfaces in apparatuses useful in printing Apparatuses useful in printing and methods of controlling the temperature of surfaces in apparatuses useful in printing are provided. An exemplary embodiment of the apparatuses useful in printing includes a belt including a first surface; at least one heat source fo... | 10/18/2011 |
| 8036559 | Fixing unit and fixing temperature control method A fixing unit that heat-fixes the toner image onto the sheet, has an information acquisition section that acquires information concerning a factor causing the input voltage which is supplied to a heater for heating the heating roller to vary; a temperature setting s... | 10/11/2011 |
| 8036556 | Fixing device having an electric power control system to an induction heating coil for image forming apparatus A fixing apparatus according to an embodiment of the present invention controls, using a CPU and a temperature comparator, an inverter circuit that supplies electric power to an induction heating coil and performs temperature control for a heat roller. The CPU adjus... | 10/11/2011 |
| 8036557 | Fixing device, image forming apparatus, and heating control method for fixing device A fixing device includes a heat roller having a degaussing alloy material, an induction heating member for exciting the heat roller, an inverter circuit for giving power at a predetermined frequency to the induction heating member, and a control unit, and when drivi... | 10/11/2011 |
| 8036558 | Heater controller and image forming apparatus A heater controller is provided. The heater controller includes a switching unit which switches a conduction state of a heater with an AC power source between ON and OFF at a timing at which an AC power voltage becomes zero; and a control unit which controls the swi... | 10/11/2011 |
| 8032047 | 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... | 10/04/2011 |
| 8032045 | Fusing device heated by induced current 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 uni... | 10/04/2011 |
| 8032046 | Image forming device and image forming method wherein a standby fixing temperature is higher than a low-temperature fixing temperature To control a temperature of a rotating member for fixing an image during standby, an image forming device can suppress overshoot of the temperature of the rotating member occurred when a fixing state is switched to a standby state. Determining the standby temperatur... | 10/04/2011 |
| 8027607 | Image forming apparatus The image forming apparatus, in the case where image forming is performed on a recording medium whose size covers a position of a second temperature detection element perpendicularly disposed to the recording medium conveyance direction, when the detected temperatur... | 09/27/2011 |
| 8023851 | Method and printer assembly for consistent power control in fuser assembly of electrophotographic printer A method for setting a heater element of a fuser assembly to a consistent starting condition to achieve consistency in heating power measurement is provided. The heater element is heated to a first predefined temperature when the temperature of the heater element is... | 09/20/2011 |
| 8019247 | Fusing device and image forming apparatus which turns on an edge heater A disclosed fusing device includes a fusing part; a pressing part rotatably pressed against the fusing part to form a fusing nip for fusing a toner image onto a sheet; a capacitor; a center heater for heating a center portion of the fusing part; an edge heater for h... | 09/13/2011 |
| 8010007 | Image forming apparatus including a plurality of heating units and method of controlling the same A control unit controls supply of power to a plurality of heating units at predetermined control period T1 that is set by a first unit. A second unit sets power supply time t1 for a first heating unit having largest power consumption within the control... | 08/30/2011 |
| 8005389 | Fixing device and temperature control method therefor A fixing device includes a fixing belt, exercitation coils for induction-heating the fixing belt, power supplies that supply high-frequency power to the excitation coils, an output power detecting circuit that detects output electric energy of the power supplies, a ... | 08/23/2011 |
| 8000623 | Fixing apparatus and image forming apparatus A fixing apparatus of the present invention includes a heating roller 2 that is a cylindrical member having a center axis, a pressurizing roller 3 that exerts pressure on the heating roller 2, and a temperature detecting element 6 that de... | 08/16/2011 |
| 7995944 | Fusing device and image forming apparatus having the same A fusing device includes a heating unit which provides heat for fixing toner on paper, a pressure unit which is aligned with the heating unit, and which provides pressure for fixing the toner onto the paper. The fusing device further includes a heat applying unit th... | 08/09/2011 |
| 7991316 | Fixing device There is provided a fixing device 6 including a heating body 22 which has a heating heat generation section 24 subjected to induction heating upon application of alternating magnetic fields generated by a exciting coil 27, a pressure roll... | 08/02/2011 |
| 7983582 | Image forming apparatus and control method therefor An image forming apparatus includes an image carrier, a developing unit, a transfer unit, and a fixer to fix an image formed on a sheet and includes a rotary heat generator including a heat generation layer, a pressure member to form a nip with the rotary heat gener... | 07/19/2011 |
| 7983581 | Fixing method and fixing device with specified temperature relationships for recording medium A fixing method and a fixing device is provided in which an unfixed toner image formed on a recording medium is heat-pressure-fixed by using a fixing unit, wherein the unfixed toner image is fixed when the recording medium passes through at least two fixing units ar... | 07/19/2011 |
| 7970309 | Image forming apparatus including a power-control feature for flicker suppression The image forming apparatus includes an image forming part, a fixing part including a heater and a temperature detection element; and a power-control part that controls power to be supplied to the heater according to the detection temperature of the temperature dete... | 06/28/2011 |
| 7965955 | Image forming apparatus An image forming apparatus is operable in a speed priority mode in which a temperature range that permits a fixing operation via a pressure belt is wide and an image-quality priority mode in which a temperature range that permits a fixing operation via the pressure ... | 06/21/2011 |
| 7957662 | Fixing apparatus and image processing apparatus According to an embodiment, a heating device having a plurality of heating members which heat the heating roller, a first thermoelectric converting section having a plurality of thermoelectric converting elements, each of which has a heat-absorbing surface and a coo... | 06/07/2011 |
| 7957661 | Control of overheating in an image fixing assembly An image fixing assembly includes a heating unit having a heating element and a fusing member enclosing the heating element; a backup member; and a heat conducting member. The fusing member is configured to rotate around the heating element. Further, the fusing memb... | 06/07/2011 |
| 7957663 | Heater, fixing unit and image forming apparatus A heater is operable with a main power supply unit and a chargeable auxiliary power supplying unit. The heater includes a heater part having one or a plurality of heater elements to receive power from the main and auxiliary power supplying units, a detecting part to... | 06/07/2011 |
| 7949274 | Fixing apparatus and temperature control method In a fixing apparatus having a first roller which includes a first heater and a second heater arranged in difference ranges from each other in the direction of rotation axis and an auxiliary heater arranged in a range including the ranges where the first and second ... | 05/24/2011 |
| 7949273 | Fixing device, fixing device temperature control method and image forming apparatus A fixing device has a heating roller and a pressurizing belt which convey the a recording material in mutual contact while fixing a toner on the recording material, a heater which heats the heating roller, a noncontact first thermister which detects a surface temper... | 05/24/2011 |
| 7945181 | Fixing device, image forming apparatus, and fixing-device control method In a fixing device, a fixing unit fixes a toner image transferred onto a recording medium by a heating target unit heated by a plurality of heating units each of which is grouped as a first heating unit to which power is selectively supplied or a second heating unit... | 05/17/2011 |
| 7941066 | Image heating device with duct for air blowing and suction An image forming apparatus comprising a heating rotating body which heats a toner image while nipping and conveying a recording material bearing the toner image, a fan which cools down the heating rotating body, and a duct adapted in such a manner that air which is ... | 05/10/2011 |
