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8422902 |
Image forming apparatus that uses fixing member temperature or thickness of recording medium to detect when to halt the rotation drive of a fixing member drive unit
An image forming apparatus forming an image by fixing a developer on a recording medium with heat includes a fixing member, a pressure member, a drive unit, a heat unit, a temperature detection...
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8417137 |
Fixing device and image forming apparatus employing the fixing device
A fixing device includes a rotary fixing member, a counter member to contact the rotary fixing member, a first heater to heat the rotary fixing member, a driving unit to rotate the rotary fixing...
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8391761 |
Fixing device and image forming apparatus including fixing device
A fixing device of belt fixing type is provided. A heat generating member that is a heat generating source for heating a fixing belt has a heat generating layer composed of a resistance heat...
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8385756 |
Failure diagnosis device, failure diagnosis method, image forming device, and recording medium
A first feature quantity computing unit that computes a first feature quantity representing an average of a plurality of driving loads recorded by a driving load of a fixing section recording unit...
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8385755 |
Fixing device having a unit to prevent overheating
A fixing device and an image forming apparatus having the same, and a method of operating the fixing device, the fixing device being provided with a power interruption unit to prevent overheating...
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8369719 |
Image forming apparatus, fusing device thereof and method of controlling fusing device
An image forming apparatus that is capable of preventing a damage to a fusing belt or hazardous conditions due to the overheating of the fusing belt and a fusing device thereof are disclosed. The...
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8364048 |
Fixing device and image forming apparatus including same
A fixing device including a fixing member; a heat source to heat the fixing member; a power supply to supply power to the heat source; a thermostat provided in the middle of a circuit connecting...
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8364049 |
Fixing apparatus and image forming apparatus
A fixing apparatus which heat-fixes a toner image transferred onto a sheet, including: a heating device configured to generate eddy currents in a conductive heating element using a magnetic core...
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8355641 |
Paper wrinkle sign monitoring device, paper wrinkle sign monitoring method, and computer readable medium
A paper wrinkle sign monitoring device includes: at least one timing detecting unit that is set on a transport path of a printing medium, and that detects transport timing of the printing medium;...
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8351804 |
Fixing apparatus
A fixing apparatus capable of performing, even by a short brake, brake assist by which a sheet is stopped at a position where the sheet is visible. Upon occurrence of a wrap jam, brake control for...
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8346112 |
Cooling member included fixing device and image forming apparatus
A fixing device includes a heating member that heats an unfixed toner image on a printing medium, a conveyance device that conveys the printing medium launched from the heating member after the...
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8346106 |
Fixing device and image forming apparatus using same having a second heater outside the recording medium passing area
A fixing device includes a fixing member including a recording medium passing area inside thereof through which the recording medium passes, a first heater disposed in the fixing member to heat the...
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8331838 |
Image forming apparatus with one-sided alignment detection
An image forming apparatus is provided. The image forming apparatus includes a fixing unit to thermally fix an image transferred onto a sheet, a discharge unit to discharge the sheet carried from...
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8315530 |
Fixing device and image forming device
A fixing device includes a heating roller that is internally provided with a heat source member and is rotated by a drive unit; an endless fixing belt that is entrained around the heating roller...
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8311424 |
Fixing device usable with an image forming apparatus
An image forming apparatus includes a fixing roller to fix a toner on a recording medium; a heater to heat the fixing roller; an alternating current (AC) power source to generate an AC electric...
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8311425 |
Fixing unit controlling apparatus and image forming apparatus including the same
A fixing unit controlling apparatus that includes a switching unit of a power supplier to supply power to a fixing unit according to a power supply controlling signal to control a temperature of...
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8306441 |
Printing system and method for handling unfixed pages in such a printing system
A recording medium is moved to a transfer printing station and print images are transfer-printed. The recording medium is transported to a fixing station. A print stop is initiated whereby the...
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8301051 |
Fixing device, image forming apparatus, and method of controlling fixing device
In a fixing apparatus, an internal temperature detection device is arranged within a heat generation region and detects temperature of a fixing device. An external temperature detection device is...
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8295752 |
Fixing device and image forming apparatus
The fixing device includes: a fixing member including a conductive layer capable of self-heating by electromagnetic induction; a drive unit rotationally driving the fixing member; a magnetic field...
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8290387 |
Image heating apparatus
An image heating apparatus includes a coil for generating magnetic flux; a rotatable heater, having an electroconductive layer which generates heat by the magnetic flux, for heating an image on a...
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8285193 |
Sheet processing apparatus and image forming apparatus
A sheet processing apparatus of the invention has: an ejecting unit that is capable of receiving a sheet on which a toner image has been heated and fixed, and ejecting the sheet for a predetermined...
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8285158 |
Image forming apparatus and control method therefor
An image forming apparatus that is capable of preventing an abnormal operation due to a voltage drop of a commercial power source and continuing an image forming operation efficiently even if the...
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8285183 |
Image forming apparatus
An image forming apparatus forms an unfixed toner image on a sheet and includes a fixing unit including a fixing roller, a back-up member forming a nip with the fixing roller, and a rotatable...
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8284420 |
Heating device for supplying power to plural heat sources, heating method and image forming apparatus using the heating device
The heating device includes plural heaters to heat fixing members; a power supplying device to supply power to the plural heaters; and a controller. The controller determines heater activation...
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8280289 |
Fixing apparatus and image forming apparatus including the same
An embodiment of the present invention includes a fixing member; a pressure member for pressing against the fixing member so as to form a nip region between the pressure member and the fixing...
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8265495 |
Heating device and image forming apparatus with abnormality detection
A heating device includes: a driving member configured to rotate; a driven member configured to rotate with the rotation of the driving member; a heater configured to heat a surface of one of the...
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8254802 |
Image heating apparatus
An image heating apparatus including: an image heating member for heating an image formed on a sheet at a nip portion; a temperature detector for detecting temperature of a predetermined region of...
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8238770 |
Fixing device and image forming apparatus
A fixing device includes a fixing roller, a pressure roller and a soaking roller. Temperature of the soaking roller, which contacts with the pressure roller, is measured by a temperature...
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8224192 |
Image forming apparatus
An image forming apparatus forms an image by fixing, on a recording medium, a toner image formed by an image forming unit. The image forming apparatus includes a determination unit which determines...
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8218983 |
Image formation apparatus including hot-roll type fixing device and method for determining malfunction of temperature sensor in the same
A control portion determines whether a malfunction occurs or not in a roller temperature sensor and an ambient temperature sensor by comparing a trajectory (temporal behavior) actually created by...
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8218993 |
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...
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8218984 |
Temperature controlling method of fixing device
In a fixing device, when sheets of small width size are continuously passed and temperature rises in both side parts, a temperature control unit stops print control of an auxiliary lamp. When the...
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8200113 |
Fixing apparatus comprising circuit for suppressing heat generation according to rotation detection signal
A fixing apparatus including a rotation detection circuit which detects the rotation state of the rotating member or pressing member, and one to (N−1) limiting circuits which limit driving of one t...
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8195056 |
Fixing apparatus, printing apparatus, and computer readable medium storing a program for detecting twine
The present invention provides a fixing apparatus including: a pair of rotating bodies that transports a recording medium on which an image is formed by using an image forming material, by...
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8185008 |
Fixing device and image forming apparatus with a temperature detector
A fixing device includes a heater, first and second pressure-applying members, a belt support member, a fixing belt, a contact member and a temperature detector. The fixing belt is entrained about...
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8170436 |
Apparatuses useful for printing and methods of controlling a temperature of a surface in apparatuses useful for printing
Apparatuses useful for printing and methods of controlling a temperature of a surface in an apparatus useful for printing are disclosed. An exemplary embodiment of the apparatuses includes a first...
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8165482 |
Image forming apparatus with failure detection and control method therefor
An image forming apparatus that enables to continue an operation so that electric power consumption does not exceed a power supply capacity even if an electric current sensor breaks down. A...
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8165489 |
Image forming apparatus having cooling fans
An image forming apparatus includes a first fan and a second fan that are configured to generate air in a main body of the apparatus, a controller configured to control operations of the fans, and...
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8155541 |
Fixing device which detects anomaly of heater
A fixing device shifts to the anomaly detection mode in arbitrary timing except during printing. In the anomaly detection mode, a first heat generation member and a second heat generation member...
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8145086 |
Image forming apparatus
An image forming apparatus capable of executing a mode for decelerating a rotation speed of a fixing member and a pressure member between sheets in a continuous print than that during a fixing...
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8139963 |
Image fixing apparatus with safety relay and control thereof
An image fixing apparatus has an integration circuit which is provided in a signal path from a comparison circuit to a relay drive circuit and integrates a signal input to the integration circuit,...
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8139964 |
Fixing device, control method for a fixing device and image forming apparatus
Provided is a fixing device including: a heater; a heating body that is heated by the heater and is caused to rotate; a pressure body that is in contact with the heating body, and is caused to...
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8135292 |
Fixing device and image forming apparatus having the same
A fixing device includes a pressing member, a belt member which rotates in contact with the pressing member and forms a nip with the pressing member, a first roller member and a second roller...
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8131169 |
Apparatus and method for mounting an RF monitoring device onto a fuser roll
A replaceable unit monitor assembly includes a substrate member, multiple thermal insulating stand-off members, and a monitor device mounted on the substrate member. The stand-off members mount the...
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8107867 |
Image fixing device using a belt-driving method, and image forming apparatus using the same image fixing device
An image fixing device, having a belt-driving method to drive an endless belt which is entrained about at least two supporting members, including: a first supporting member on which a light...
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8095023 |
Image forming apparatus
An image forming apparatus having a heating roller and a pressing roller includes a temperature sensing unit provided to be broken when the heating roller is overheated and a pressure releasing...
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8086119 |
Fixing device and image forming device
A fixing device includes a heating rotating body that is heated by a heater and rotates, a pressurizing rotating body that is in contact with a surface portion of the heating rotating body and...
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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...
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8068757 |
Image forming apparatus
In an image forming apparatus including a fixing portion in which a fixing nip portion is defined between a heater and a pressure roller via an endless belt, a pressure setting portion, which sets...
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8068749 |
Fixing apparatus and image forming apparatus provided with fixing apparatus
A fixing apparatus according to one embodiment of the present invention includes a rotating hot roller, a rotating pressure roller, a heating belt that contacts the hot roller and conducts heat, a...
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