Abstract: In a roller to affect a temperature of a print substrate in a digital printer, a hollow roll is mounted to a shaft. Channels are provided for a heat transport medium in the hollow wall. A roller shell of the hollow roll is comprised of arc-shaped segments extending over a width of the hollow roll. The segments end laterally in arms designed so that the arms of adjacent segments are connected to each other. The channels extend over the width of the hollow roll and are assembled respectively from the segments of the roller shell. A respective covering plate is clamped between the arms of the respective segments.

Abstract: 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 heater contactable to and heating the fixing roller. The sheet is output from the apparatus after the unfixed toner image is fixed on the sheet. In a cleaning mode for cleaning the fixing unit, a predetermined unfixed toner image is formed on the sheet, the sheet is fed to the fixing unit, the toner is transferred from the sheet onto the fixing roller in the fixing nip, the toner transferred onto the fixing roller is brought into contact to the heating member, and thereafter, the toner on the fixing roller is transferred onto the sheet in the fixing nip.

Abstract: A laser fixing device includes: a laser beam irradiating device which irradiates a recording medium that is conveyed while carrying an unfixed toner image, with a laser beam; and a laser beam absorbing member which is disposed in an optical path of the laser beam that is emitted to a back side of a position where the recording medium is conveyed, and which absorbs the laser beam.

Abstract: A fixing device including a heating roller; a pressure roller forming a nip section by making contact with the heating roller; a controller for controlling the surface temperature of the heating roller so that it becomes a predetermined set temperature; an amount of decrease detector for detecting an amount of decrease in the surface temperature of the pressure roller between before and after the passing of the paper sheet through the nip section; a determiner for specifying a required temperature required to perform the fixing for the paper sheet on the basis of the amount of decrease and for determining whether the set temperature is acceptable as the required temperature; and a temperature compensator for correcting the set temperature so that the set temperature is acceptable as the required temperature in the case that the determiner has determined that the set temperature is not acceptable as the required temperature.

Abstract: A heater for a fusing apparatus that is used in an image forming apparatus includes a carbon fiber filament; a holding pipe which receives the carbon fiber filament; and terminals which are disposed opposite ends of the holding pipe and connects the carbon fiber strands with an electric power source. The carbon fiber filament may be formed of any of one to seven carbon fiber strands and each of the carbon fiber strands may have linear density of any of 1-70 tex.

Abstract: A fixing device slide member has a surface 40a of a sheet body 40, which surface is made of heat-resistant resin. A specific wear rate on the surface 40a of the sheet body 40 in the ring-on-disc test is 10×10?8 mm3/(N×m) or less on condition that a counterpart material is aluminum, roughness Ra is equal to 0.2 micrometer, PV is equal to 51.2 MPa×m/min, and measuring time is 50 hours. Thus, the surface 40a of the sheet body 40 is enhanced in wear resistance so as to be free from generation of worn powder, which suppresses torque increase in a pressurizing belt caused by the worn powder.

Abstract: A fixing unit fixes a toner image transferred onto a recording medium to the recording medium by heating and pressurizing the toner image. An auxiliary power supply unit includes a charging element that is charged by a power supplied from a main power supply unit. Each of the main power supply unit and the auxiliary power supply unit supplies a power to the fixing unit. A power control unit controls the main power supply unit and the auxiliary power supply unit, so that the power supplied from at least one of the main power supply unit and the auxiliary power supply unit to the fixing unit is kept sufficient.

Abstract: 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 recording material. The recording material P is heated when passed through a fixing nip portion formed between the fixing heater and the pressure roller. The pressurization conditions between the fixing heater and the pressure roller can be changed. The heat fixing apparatus includes a fixing member which adjusts the lengthwise heat distribution of the fixing heater by changing the applied current proportion of the plurality of resistance-type heat generation layers according to the pressurization conditions between the fixing heater and the pressure roller.

Abstract: An image forming apparatus includes a halogen heater in a fixing unit; an AC source applying an alternating voltage to the halogen heater; a half-wave control unit that performs the heater half-wave control to control the halogen heater on the half-wavelength basis, according to a heater-on/off pattern set for each control cycle having a predetermined length; a heater-off-time measuring unit that measures heater-off period of time; a phase-control-execution determining unit that determines, based on the measured heater-off period of time, whether the heater phase control is to be performed on the alternating voltage, the phase control being performed by shifting phase of the alternating voltage; and a phase control unit that performs, when the phase control is determined to be performed, the phase control only for a period of time depending on the measured heater-off period of time after switch-on of the heater and before execution of the half-wave control.

Abstract: A fixing apparatus allows harmonic noise and flicker noise caused by alternating current to be reduced. To accomplish this, the fixing apparatus has a power supply unit that supplies AC power from a commercial power supply to a heater, a temperature detection element that detects the temperature of the heater, a setting unit that sets a duty ratio for providing power to the heater such that the temperature detected by the temperature detection element maintains a target temperature, and a control unit that controls the power supply unit such that an average power duty ratio of a single cycle equals the power duty ratio based on the detected temperature, where a single cycle is three or more full waves of the commercial power supply, there being three or more power duty ratios per one half wave of the commercial power supply in a single cycle.

Abstract: A fixing device includes a heating member, a pressing member, a coil, a magnetic core, a path switching member switching a magnetic path between a first path and a second path, and a magnetism adjustment member. The magnetism adjustment member allows a passage of a magnetic flux from the magnetic core towards the heating member within the magnetic field range when the magnetic field path is switched to the first path, and shields the magnetic flux without allowing the passage of the magnetic flux within the magnetic field range when the magnetic path is switched to the second path. Further, the magnetism adjustment member has a plurality of ring-shaped portions formed of a single wire material having an endless shape. Each of the ring-shaped portions extends in a longitudinal direction of the magnetic core according to a size of the sheet.

Abstract: A cylindrical rotating member rotatably supported in a device in state where it is configured to contact a medium and that is heated in state where it is supported in the device, including: an elastically deformable base body that is a metal cylinder extending in a width direction of the medium, the width direction intersecting a transport direction of the medium, the base body being configured such that: when the base body is rotated and a portion of the base body reaches a contact-portion at which the base body contacts the medium, the portion of the base body elastically deforms, applies pressure to the medium, increases the size of a contact-area with the medium and applies heat to the medium; and after the base body is further rotated and the portion of the base body has passed the contact-portion, the base body elastically recovers its original shape is provided.

Abstract: A temperature control apparatus includes a temperature sensor which detects a temperature of a heating element, a controller for controlling heat generation of the heating element in accordance with a detected temperature by the temperature sensor, and a monitoring circuit which monitors the detected temperature, and stops operation of the controller in a predetermined stop period defined on the basis of the detected temperature when a predetermined operation mode of plural operation modes is set.

Abstract: In a fixing apparatus provided with a plurality of fixing heaters having heat distribution characteristics that are different from each other inside a fixing roller, and an image forming apparatus provided with the fixing apparatus, an auxiliary heater is provided, the auxiliary heater being provided inside the fixing roller and to which power is distributed only during the warm-up period until the fixing roller in a lower temperature state reaches a predetermined fixing temperature. The plurality of fixing heaters includes a first fixing heater having first heat distribution characteristics that mainly heats a center portion of the fixing roller, and a second fixing heater having second heat distribution characteristics that mainly heats both end portion regions of the fixing roller.

Abstract: An apparatus (100) and method (300) that adjusts a printer fuser nip is disclosed. The apparatus can include a media transport (110) configured to transport a media sheet (112) in a media sheet travel direction. The apparatus can include a fuser assembly (120) configured to fuse an image on the media sheet. The fuser assembly can include a fuser nip (126) that can have a fuser nip width (128) parallel to the media sheet travel direction. The apparatus can include a controller (130) coupled to the fuser assembly, where the controller can be configured to control operations of the apparatus. The apparatus can include a nip width profile generation module (140) coupled to the controller, where the nip width profile generation module can be configured to determine fuser nip width parameters based on media sheet properties and based on fuser assembly properties. The fuser assembly can be adjusted according to the fuser nip width parameters.

Abstract: The heater is capable of improving heat generation uniformity in a sheet feeding area while suppressing the temperature rise of a non-sheet feeding portion. Each of heat generation lines includes a plurality of heat blocks in which a plurality of heat generating resistors are electrically connected in parallel between two conductive members. The heat generation lines are arranged in a lateral direction of the substrate, and the heat blocks are arranged so that the end of the heat block in the heat generation line of a first row does not overlap with the end of the heat block in the heat generation line of a second row in a longitudinal direction of a heater.

Abstract: A fuser roll adapted to fuse toner on the surface of a recording medium is disclosed. The fuser roll includes a non-metallic core having an outer surface, and a resistive heating element covering at least a portion of the outer surface of the core. A current transmitter is provided for transmitting a current to said resistive heating element, and an insulation layer is provided for covering at least a portion of said resistive heating element. A toner release layer is provided for covering at least a portion of said insulation layer.

Abstract: A fixing device includes: a fixing member that touches an unfixed toner image formed on a sheet; a pressing member that causes the sheet to come in pressure contact with the fixing member; a pressing belt that is interposed between the fixing member and pressing member to rotate; a lubricant coating member that coats lubricant on an inner surface of the pressing belt; a pair of first blade members each that touches, through a counter method, an inner surface of both edge portions of the pressing belt in a width direction perpendicular to a rotating direction of the pressing belt, to scrape the lubricant; and a first lubricant guide member arranged from a tip of the first blade members to an inner side, receives the scraped lubricant, and guides the lubricant to the inner side to return to the inner surface of the pressing belt.

Abstract: The invention provides an overheat protection control component for a liquid heating vessel which includes a control body (1); a single-integrated dual-actuation thermally sensitive bimetallic actuator (2) is provided on the upper face of the control body (1), wherein the single-integrated dual-actuation thermally sensitive bimetallic actuator (2) is two integrated and relatively independent actuating units which are formed on a piece of bimetallic strip, and the outer kick limb (3) of either said actuating unit will produce an actuating movement downwards when an overheat state occurs; two groups of switch contacts (6) are also provided on the control body (1), wherein either group of switch contacts (6) cooperate with the outer kick limb (3) of a corresponding actuating unit, and the outer kick limb (3), when producing a downward actuating movement, will open a corresponding group of switch contacts (6) and cut off the power supply of the heater for the liquid heating vessel.

Abstract: An image forming apparatus includes an image carrying member, a transfer unit, a pre-heating unit, a fixing unit, a first temperature sensor, and a first heat controller. The image carrying member carries a toner image. The transfer unit transfers the toner image carried on the image carrying member to a recording medium transported to a transfer position. The pre-heating unit selectively heats the recording medium before the recording medium is transported to the transfer position. The fixing unit fixes the toner image on the recording medium. The first temperature sensor detects temperature of the recording medium as the recording medium passes through the pre-heating unit. The first heat controller changes an amount of heat energy to be applied to the recording medium per unit area of the recording medium by the pre-heating unit. The first heat controller is controlled based on a detection result of the first temperature sensor.

Abstract: 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 roll including a first outer surface and at least one first heating element for heating the first outer surface; a second roll including a second outer surface; a nip between the first outer surface and the second outer surface; a first temperature sensor for sensing a pre-nip temperature at a pre-nip location; and a first voltage modulator connected to each first heating element and the first temperature sensor. The first voltage modulator receives a temperature signal from the first temperature sensor indicative of the pre-nip temperature and modulates an AC voltage supplied to each first heating element to maintain each first heating element continuously ON at a power level ranging from partial power to full power to control the pre-nip temperature.

Abstract: A fixing device includes: a pressure belt movable in a revolving motion; a fixing roller; and a pressure member for pressing an inner surface of the belt toward the roller. A fixing nip is formed between the roller and the belt while an elastically deformable surface of the roller is contacted with the belt by pressure applied by the pressure member to the belt. The pressure member includes: an elastic member for applying pressures so that greater pressure is applied to center of the roller than to the ends, the center and the ends being along axis direction of the roller; and a hard member that is disposed parallel to the elastic member on downstream side thereof in a revolving direction of the belt and applies pressures to the roller so that greater pressure is applied to the ends than to the center.

Abstract: A heating device capable of accurately determining a change in the state of a to-be-heated member, caused in a narrow area. An induction heating coil generates magnetic flux by flow of electric current therethrough. The fixing belt generates heat by the action of the magnetic flux generated by the induction heating coil. A first antenna is disposed at a location where the magnetic flux generated by the induction heating coil can be detected assuming that there is no fixing belt. A second antenna is disposed such that at least some area of the second antenna overlaps the first antenna. A control circuit determines whether or not a state of the fixing belt has changed, based on a result of detection by the first antenna and a result of detection by the second antenna.

Abstract: According to an embodiment of the invention, a heat uniforming member, which has an outer diameter smaller than an inner diameter of a hollow member and in which thermal deformation generated by thermal expansion remains, is set in the inside of the hollow member having a center axis, support members are set to both ends of the hollow member to enable supporting of ends of the heat uniforming member, and an endless body having a uniform thermal distribution is formed by heating the hollow member, the heat uniforming member and the support member at a specified temperature for a specific time and causing the heat uniforming member to adhere closely to an inner wall of the hollow member.

Abstract: A fixing device includes a fixing belt for fixing an unfixed toner image onto a recording medium, a planar heating member for heating the fixing belt, and a pressure roller. The heating member includes a ceramic heat generating element having a PTC characteristic, and a high-thermal-conductive heat diffusion member. The fixing belt is formed in an endless shape and is supported around, at least, the high-thermal-conductive heat diffusion member, thereby to be heated. The ceramic heat generating element comes into contact with the fixing belt over the full width thereof with the high-thermal-conductive heat diffusion member interposed therebetween. The high-thermal-conductive heat diffusion member comes into contact with the fixing belt over the full width thereof and diffuses heat generated by the heat generating element, in the traveling direction of the fixing belt.

Abstract: An image forming apparatus includes a heat source of a fixing device to heat when an alternate current signal is supplied thereto; a conduction control circuit for controlling an alternate current power source with a conduction control signal, and for supplying the alternate current signal to the heat source; and a control unit for outputting the conduction control signal in a specific pattern. The conduction control circuit includes a conduction control element for switching between conduction and non-conduction at a zero cross timing of the alternate current power source according to the conduction control signal, and for supplying the alternate current signal.

Abstract: An image heating apparatus has a coil; a rotatable image heating member capable of generating heat by a magnetic flux generated by the coil to heat an image; a temperature detecting member; an electric power supply controller for controlling electric power supply to the coil; and an execution portion for executing a stand-by mode operation in which the image heating member is at rest, and the apparatus waits for input of an image formation signal while the electric power supply controller carries out its power supply control operation such that in the stand-by mode, along no longitudinal line on said image heating member, the temperature of the image heating member exceeds Curie temperature on an entirety of the longitudinal line.

Abstract: An image forming apparatus, such as a printer, includes an image forming unit forming a toner image on an image carrier, a transfer unit for transferring the toner image onto a recording medium, a pair of a fusing rotating body and a pressure rotating body, a fusing unit for fusing the toner image on the recording medium, a temperature detecting unit for detecting the temperature on the surface of the fusing rotating body, and a control unit. An amount of decrease in the temperature of the fusing rotating body surface is measured at a predetermined time, and the time between an image formation request and the arrival of the recording medium, with the toner image formed thereon, at a fusing/nipping portion formed between the fusing rotating body and the pressure rotating body is extended when the temperature decrease amount is greater than a threshold value.

Abstract: 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 recording material. The recording material P is heated when passed through a fixing nip portion formed between the fixing heater and the pressure roller. The pressurization conditions between the fixing heater and the pressure roller can be changed. The heat fixing apparatus includes a fixing member which adjusts the lengthwise heat distribution of the fixing heater by changing the applied current proportion of the plurality of resistance-type heat generation layers according to the pressurization conditions between the fixing heater and the pressure roller.

Abstract: The fixing device is provided with: a fixing member that includes a metal layer; a pressure member that forms a pressure portion between the pressure member and the fixing member, and that is driven to rotate; an electromagnetic induction heating member that causes the metal layer of the fixing member to generate heat; and a heater that is disposed so as to face the electromagnetic induction heating member through the fixing member and so as to be in contact with an inner side of the fixing member, and that is caused to generate heat by a magnetic field. A heat transfer lubricant is provided between the fixing member and the heater disposed on the inner side of the fixing member.

Abstract: A fixing device that includes a first fixing unit including a first heating roller having a metallic roller and a resin layer formed on the metallic roller, and a first pressure roller coming into abutment with the first heating roller; and a second fixing unit having a second heating roller being configured to heat a transfer material heated by the first fixing unit and including a metallic roller, a elastic layer formed on the metallic roller, and a resin layer formed on the elastic layer, and a second pressure roller coming into abutment with the second heating roller is provided.

Abstract: The image heating apparatus includes first and heat generation member, a connection state switching section switching the first and second heat generation members between a serial connection state and a parallel connection state, the connection state switching section C having a first relay having a make contact or a break contact and a second relay having a transfer contact, a drive element provided used for controlling power supplied to the first and second heat generation members, and a capacitor between a power supply path closer to the side of the first and second heat generation members rather than the first relay and a power supply path closer to the commercial power supply side rather than the drive element. The image heating apparatus can suppress an increase in noise level of a noise terminal voltage by performing power control on the heater.

Abstract: A fixing device includes a fixing member that comes into contact with a recording medium while rotating a heating unit that heats the fixing member, a pressing member that presses the recording medium to the fixing member while rotating, and an air supply unit that supplies air to a part included in an angle range of 90 degrees toward a downstream side of the pressing member in a rotating direction from a contact position between the pressing member and the fixing member.

Abstract: A heater control device comprising: a storage unit that stores therein a turn-on pattern of a heater specified in units of a predetermined control cycle including a plurality of half-wavelengths of an alternating-current voltage supplied to the heater so as to prevent flickering; a color temperature detecting unit that detects a color temperature of light emitted from a filament of the heater; and a heater control unit that, while operating in a standby mode in which power supplied to the heater is reduced, causes the heater to be fully turned ON at every first period, and then turns ON the heater in the turn-on pattern when the color temperature exceeds a predetermined threshold after the heater is fully turned ON.

Abstract: An image forming apparatus has an image forming station and a fixing unit. The fixing unit includes a coil for generating a magnetic field for induction heating the heating member. A first core made of a magnetic material is arranged fixedly around the coil. A second core made of a magnetic material is between the first core and the heating member in a generation direction of the magnetic field to form a magnetic path in cooperation with the first core and capable of changing a posture thereof. A shield made of a nonmagnetic metal is arranged along the outer surface of the second core to shield magnetism in the magnetic field and a magnetic shielding portion for changing the posture of the second core between a first posture where the shield shields the magnetism and a second posture where the shield does not shield the magnetism.

Abstract: An image heating device includes a cylindrical film; a heater contacted to an inner surface of the film, wherein the heater includes a substrate, a heat generating resistor provided on the substrate, and an insulating layer for covering the heat generating resistor and is contacted to the film; and a pressing member for pressing the film against the heater to form a nip, between itself and the film, in which a recording material carrying thereon an image is to be nip-conveyed. The heater includes an electroconductive layer, which is grounded, provided at a position between and remote from a film-side surface of the insulating layer and the heat generating resistor.

Abstract: A heat-producing element for a fixing device to carry out heat-fixing after a toner image having been formed using a pulverized toner is transferred on an image support, a heat-producing element for a fixing device in which a thin-leaf graphite-pulverized material of a volume specific resistance of 10?6 ?·cm to less than 10?2 ?·cm is incorporated in a heat-resistant resin as a conductive material.

Abstract: Ink drying apparatus and method for controlling ink drying apparatus are described herein. An example ink drying apparatus includes first and second heating elements positioned adjacent a drying area in a printer, and a controller to determine a temperature of the heating area and to selectively operate, based on the temperature determination, the first heating element in a burst mode and the second heating element in an on/off mode.

Abstract: A fixing device of the present invention is arranged so that: (i) at least both ends of a planar heat-generating member come close to or touch an outer surface of a fixing roller, said both ends being in a circumferential direction when viewed in an axial direction of the fixing roller; and (ii) the planar heat-generating member has, in the vicinity of both the ends, shapes formed gently with respect to the outer surface of the fixing roller when viewed in the axial direction. An almost whole inner surface area of the fixing belt wound around the planar heat-generating member and the fixing roller touches the planar heat-generating member or the fixing roller. The fixing belt is naturally formed, without being distorted at an area where the fixing belt touches the heating member. This allows a fixing device using a planar heat-generating belt type fixing method, which provides a short warm-up time, to be excellent in heat efficiency, consume less power, and have a fixing belt which does not slip easily.

Abstract: The fixing apparatus of an image forming apparatus has a heating device, a feeding device and control device, wherein in a case of continuously forming images onto the material to be heated, wherein the control device changes the turn-on time ratio in accordance with a size of the material to be heated and determines the feeding timing of the material to be heated fed by said feeding device in accordance with temperature distribution of the heating device in a longitudinal direction of the heating member perpendicular to a conveying direction in which the material to be heated is conveyed. It can suppress the occurrence of wrinkles and can improve a throughput.

Abstract: A fixing device according to this invention includes a heating roller, a heater driver, a thermistor, and a CPU. The heating roller has a heater and heats a recording sheet. The heater driver drives the heater. The thermistor detects a surface temperature of the heating roller. The CPU stops an operation of the heater driver when the surface temperature of the heating roller becomes higher than a predetermined temperature and, thereafter, causes the thermistor to perform detection of the surface temperature of the heating roller for a predetermined time period and issues an alarm about occurrence of a first abnormality when the surface temperature of the heating roller fails to drop in the predetermined time period.

Abstract: The present invention includes: a printing portion (12) for performing printing on a printing layer of a sheet material (5) including a sheet-like base having one surface provided with the printing layer and another surface provided with a heat-sensitive adhesive layer; a thermal activation portion (15) for heating the heat-sensitive adhesive layer of the sheet material (5) and generating an adhesive force; a temporary stock portion (14), which is disposed in a transport path for the sheet material (5) between the printing portion (12) and the thermal activation portion (15), for temporarily stocking the sheet material (5); and a casing (19) covering the temporary stock portion (14).

Abstract: The fixing apparatus includes: a fixing member having base and conductive layers and fixing a toner onto a recording medium when the conductive layer is heated by electromagnetic induction; a magnetic field generating member generating an alternating-current magnetic field crossing the conductive layer; and a magnetic field inducing member arranged so as to face the magnetic field generating member across the fixing member, and inducing the magnetic field into itself or allowing the magnetic field to go through the member. The base layer and the magnetic field inducing member each contain a material having a magnetic permeability change onset temperature in a range from not less than a heating preset temperature of the fixing member to not more than a heatproof temperature of the fixing member. A thickness of the base layer is smaller than a skin depth of the layer at the heating preset temperature of the fixing member.

Abstract: Plural main cores and plural sub-cores are arranged spaced apart from each other along a direction orthogonal to a rotating direction of a heat belt. The plural main cores are opposed to a first area where a sheet having first width in the heat belt passes. The plural sub-cores are opposed to second areas that are areas excluding the first area in an area where the sheet having second width larger than the first width in the heat belt passes. The plural sub-cores have thickness in the direction orthogonal to the rotating direction of the heat belt smaller than the thickness of the plural main cores.

Abstract: Disclosed are a light absorption device, a fixing unit including the same and an image forming apparatus including such fixing unit. The light absorption device includes a plurality of dielectric layers containing nano-rods. Surface plasmon resonance generated in response to certain wavelengths corresponding to the dielectric constants of the dielectric layers can result in an improvement in the light absorption efficiency. Further improvements can be realized by adjusting the dielectric constants of the dielectric layers.

Abstract: The invention provides for an inkjet printhead having a plurality of micro-electromechanical vapor bubble generators. Each bubble generator includes a nozzle in fluid communication with an ink chamber, and a heater positioned in thermal contact with ink in the chamber. Each generator also includes drive circuitry configured to provide a modulated pulse to the heater to generate a vapor bubble in the ink in said chamber, the pulse comprising a pre-heat series of a predetermined number of pulses separated by a predetermined period, followed by a trigger pulse of a period twice that of said predetermined period.

Abstract: A standby state is where a pair of rotating bodies stops rotating, and temperature control is performed so that a rotating body reaches a standby temperature. A fixing state is where the rotating bodies are rotating and temperature control is performed so that a rotating body reaches a fixing temperature that changes in accordance with a setting. An image formation apparatus includes a judgment part for judging whether to transition from the fixing state to the standby state, and a fixing controller for, upon a judgment by the judgment part to transition to the standby state, prior to performing temperature control to reach the standby temperature, causing the pair of rotating bodies to rotate, and performing temperature control so that the temperature of a rotating body reaches a predetermined transition temperature range including temperatures higher than a lowest fixing temperature setting, and lower than a highest fixing temperature setting.

Abstract: 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 provided. The fusing device includes a fusing unit which is resistance heated or induction heated by an induced current, and fuses the toner onto the print paper using the generated heat. A sensing unit senses the temperature of the fusing unit. A reference current generating unit generates a predetermined reference current to heat the fusing unit to reach a predetermined temperature based on the temperature of the sensed fusing unit and the reference temperature. A pulse width modulation signal generating unit generates a pulse width modulation signal for generating the induced current so that the induced current corresponding to the reference current is supplied to the fusing unit.

Abstract: A heating lamp unit (40) is mounted on a head carriage (10) of an inkjet printer (1). Since the heating lamp unit (40) is positioned very close to an ink drop, which is discharged from the inkjet head (11) and dropped on a recording medium (30), and that the heating lamp unit can directly harden the ink drop with heat, the ink drop can be efficiently fixed. When the heating lamp unit (40) is arranged very close to the inkjet head (11), there are possibilities of generating clogging of the nozzle of the inkjet head (11) and thermal failure of the inkjet head itself due to heat released from the heating lamp (40). Since the heating lamp unit (40) can be efficiently cooled by a cooling mechanism (50) using heat pipes (51, 52), the inkjet head can be prevented from being heated.

Abstract: According to an aspect of the invention, a fixing device includes, a fixing member that fixes an image onto a sheet, a satellite member arranged parallel to the fixing member with respect to an axial direction and having a smaller heat capacity than the fixing member, an endless belt laid over the fixing member and the satellite member, and a pressurizing member facing the fixing member and forming a nip via the endless belt.