Abstract: An action member is movable between a first position at which a unit bias member is sandwiched between the action member and a heating unit and a second position. A movement mechanism operates in conjunction with a movement of an operation portion to cause the action member to move from one of the first position and the second position to another one of the first position and the second position. A contact portion of the heating unit comes into contact with a fixing unit by a bias force received from the unit bias member when the action member is at the first position. The action member includes an engagement portion which engages with a part of the heating unit when the action member moves from the first position to the second position. The heating unit engages with the engagement portion to move from a reference position to an evacuation position.

Abstract: A transport device includes: a first rotating body including a shaft portion, a cylindrical portion on an outer periphery of the shaft portion, and a recessed portion in an outer surface of the cylindrical portion; a second rotating body capable of moving from the first rotating body while contacting an outer surface of the first rotating body and nipping a recording medium; a transport unit that includes a holding portion that holds the recording medium, and that transports the recording medium by moving the holding portion in a rotation direction of the first rotating body while the holding portion is disposed in the recessed portion; and a moving mechanism including a cam portion on a side of the cylindrical portion and a contact portion connected to the second rotating body and that comes into contact with the cam portion to separate the second rotating body from the first rotating body.

Abstract: In a longitudinal direction of a heater, a distance from a center portion of the heater to a first temperature detection element is a first distance, and a distance from the center portion of the heater to a second temperature detection element is a second distance greater than the first distance. In a first area which is farther from the center portion of the heater than the second temperature detection element is from the center portion of the heater in the longitudinal direction of the heater, a distance between a first conductor and a second conductor in a transverse direction of the heater is a first inter-conductor distance and a distance between a third conductor and a fourth conductor in the transverse direction is a second inter-conductor distance longer than the first inter-conductor distance.

Abstract: An image forming apparatus includes a heating rotary member that heats toner born on a recording material, and a pressure rotary member that pressurizes the heating rotary member. These rotary members form a fixing nip portion and fix a toner image to the recording material at the fixing nip portion while nipping and conveying the recording material. The apparatus further includes a web that collects toner adhering to a surface of the heating rotary member, a winding roller that winds the web, a motor that rotates the winding roller, a contact member that makes contact with an outer surface of the wound web and moves based on a position of the outer surface, a variable resistor that is connected to change a resistance value depending on a position of the contact member, and a control unit that controls a rotation amount of the motor based on the resistance value.

Abstract: A transport device includes: a first transport body; a second transport body that is movable between a contact position and a separate position with respect to the first transport body and that nips a transported material with the first transport body at the contact position; and a transport section that includes a holder to hold a leading end portion of the transported material and that transports the transported material toward a nip region where the first transport body and the second transport body nip the transported material in a state in which the second transport body is located at the separate position. After holding of the leading end portion by the holder for the transported material transported by the transport section has been released, the second transport body nips the transported material with the first transport body and transports the transported material.

Abstract: A fixing device includes an annular belt, a heating member disposed to face an inner circumferential surface of the annular belt; and a heat storage member disposed to face a surface of the heating member on a side opposite to the annular belt. A thermal diffusivity of the heat storage member is lower than a thermal diffusivity of the annular belt.

Abstract: A fixing apparatus includes a first rotary member, a nip forming unit including a heater and a holder member, a second rotary member, and a support member. The holder member includes a first surface configured to support the heater and provided on the nip portion side of the holder member in an orthogonal direction orthogonal to both of a longitudinal direction and a short direction, a second surface provided on a side of the holder member opposite to the first surface in the orthogonal direction and configured to abut a first abutting portion of the support member and abut a second abutting portion of the support member, and a rib portion provided to project from the second surface and extend in the short direction throughout at least a range in the short direction where the first surface is provided.

Abstract: A recording-medium transport device includes: a first member that rotates; a second member that rotates, the first member or second member having a recess, the first member and second member forming a nip area therebetween and transporting a recording medium while nipping the recording medium in the nip area; a gripping member that grips the recording medium; a separating member that separates the recording medium having passed through the nip area from the first member or the second member; and a control mechanism that controls opening and closing of the gripping member and movement of the separating member such that the gripping member is opened so as to release the recording medium in a state in which the gripping member is located in the recess, and the separating member lifts the recording medium from a state in which the tip of the separating member is located in the recess.

Abstract: A belt device includes a belt, a secured member, a pressure rotator, and lubricant. The belt is rotatable and has an endless shape. The belt includes an inner portion having an inner circumferential surface. The inner portion has an elastic power of 55% or more. The inner circumferential surface of the belt slides on the secured member. The pressure rotator includes a porous elastic body and presses the secured member via the belt to form a nip between the belt and the pressure rotator. The lubricant is interposed between the inner circumferential surface of the belt and the secured member.

Abstract: A fixing device includes a fixing member, a pressurizing member, a charging portion, and a control portion. The fixing member rotates while being heated. The pressurizing member forms a nip portion between itself and a surface of the fixing member in such a way as to hold a sheet therebetween and conveys the sheet by rotating together with the fixing member, wherein an image of toner has been formed on the sheet. The charging portion electrically charges the surface of the fixing member to a polarity that is same as a charging polarity of the toner by supplying a charging current to a pair of electrodes that is disposed to face the surface of the fixing member. The control portion derives an index value of a charge amount of the toner on the sheet, and adjusts the charging current based on the index value.

Abstract: A fixing device includes an annular belt having an outer circumferential surface, and a facing member that faces the outer circumferential surface of the annular belt to form a nip region. The annular belt is configured so that in measurement of a hardness of the outer circumferential surface using a hardness tester, a ratio (A/B) of a first hardness value (A) to a second hardness value (B) is 0.738 or more and 0.837 or less. The first hardness value (A) represents a measured value at a time when a measurement time corresponding to a time required for a predetermined point on the outer circumferential surface to pass through the nip region has elapsed after start of the hardness measurement. The second hardness value (B) represents a measured value at a time when the measured value by the hardness tester is saturated.

Abstract: In an image formation device, a driven gear is coupled to a far end portion in a unit inserting and withdrawing direction of a rotary fixing member or a rotary pressure member of a fixing unit. A driving gear is provided in a far end portion of a fixing unit housing part and engages with the driven gear when the fixing unit is housed in the fixing unit housing part. The driving gear and the driven gear are formed so that a transmission force transmitted from the driving gear to the driven gear in a mutual engagement position has a component so directed as to horizontally press the fixing unit against columns making a pair. The fixing unit as housed in the fixing unit housing part is pressed by the transmission force against the columns and positioned in a direction orthogonal to the unit inserting and withdrawing direction.

Abstract: A conveying device includes: a rotation part to which a holding part configured to hold a material to be conveyed is attached and configured to rotate in a circumferential direction to convey the material to be conveyed; a conveying roller that is provided with a recess for accommodating the holding part to convey the material to be conveyed; and a guide member including a guide portion configured to guide the material to be conveyed on a downstream side of the conveying roller, and a space in an intersecting direction intersecting the circumferential direction with respect to the guide portion, the space where the holding part moving by rotation of the rotation part passes through.

Abstract: An image forming apparatus includes an image forming unit to form an image on a sheet. A fixing device heats the sheet and includes a tubular body that presses against the sheet and rotates, and a heat generator contacts an inside surface of the tubular body. The length dimension of the heat generator is aligned with the axial direction of the tubular body. The heat generator has a first row of first heating elements with a first gap between each adjacent pair of first heating elements and a second row of second heating elements. The first and second rows are offset from one another in a width direction corresponding to the sheet conveyance direction. A second gap is between each adjacent pair of second heating elements in the longitudinal direction. The positions of the first gaps are different from positions of the second gaps.

Abstract: The image forming apparatus includes a fixing device that has a heater, and a required power calculation unit that determines a power Pfsr that is assumed to be required by the heater. Based on a difference between a required power that is determined by the required power calculation unit and a suppliable power, the image forming apparatus selects whether to start printing in a normal mode or to start printing in a power saving mode in which the power that is supplied to the heater is reduced in comparison to the normal mode. The power saving mode includes a plurality of modes, and when a CPU selects the power saving mode, the CPU selects one or a combination of modes from among the plurality of power saving modes based on the aforementioned difference.

Abstract: A heat roller includes a main body and a follower gear. The main body includes a cutaway portion and a pair of protruding plate portions. The follower gear includes a transmission protrusion and an abutment portion. The transmission protrusion is abutted against one protruding plate portion, when the follower gear rotates. The abutment portion is abutted against the one protruding plate portion, when the main body rotates in advance. A size of the transmission protrusion along the width direction of the cutaway portion is smaller than a clearance between the pair of protruding plate portions in the width direction, and a clearance between the abutment portion and the one protruding plate portion in the roller rotation direction is narrower than a clearance between the transmission protrusion and the other protruding plate portion in the roller rotation direction, when the transmission protrusion is in contact with the one protruding plate portion.

Abstract: A fixing apparatus includes a fixing belt, a steering roller, a pressure rotation member, and a contact-separation mechanism. The contact-separation mechanism moves the pressure rotation member to a position where the pressure rotation member is in a contact state with the fixing belt and a position where the pressure rotation member is in a separated state from the fixing belt. Swing of the steering roller is controlled so that the fixing belt moves to a predetermined position in a fixing belt width direction. A distance between a center position of the fixing belt in tilting the steering roller for a first time after the center position is separated from a center position of a range of movement of the fixing belt and the center position of the range of movement of the fixing belt in the width direction is smaller in the separated state than in the contact state.

Abstract: A fixing device includes a heater, a heating rotator, a nip formation rotator, and an entry guide. The entry guide guides each of a first recording medium having a predetermined length or more and a second recording medium having a length less than the predetermined length to the fixing nip. The entry guide includes a first and second entry guide portion. The first entry guide portion guides the first recording medium toward a harder one of the heating rotator and the nip formation rotator and has an opening. The second entry guide portion guides the second recording passing through the opening to the fixing nip along a reference line connecting an entry and exit of the fixing nip or guides the second recording medium from an area including a softer one of the heating rotator and the nip formation rotator with respect to the reference line to the fixing nip.

Abstract: An image forming apparatus includes an endless belt to rotate, belt rollers including a tension roller and an adjustment roller extending inside the endless belt, a nip roller extending adjacent the endless belt to form a nip between the nip roller and the endless belt, and a cam shaft that includes a nip forming cam and a tension adjustment cam. The nip forming cam moves the nip roller between a pressed position in which the nip roller is pressed against the endless belt, and a retracted position in which the nip roller is retracted from the endless belt. The tension adjustment cam moves the adjustment roller relative to the tension roller.

Abstract: A transport device includes a rotating body including a recessed portion on an outer surface, a rotatable heat unit that is in contact with the outer surface of the rotating body and forms an interposition region in which a recording medium is interposed between the heat unit and the rotating body, a transport unit that: (i) includes a hold member capable of holding a portion of the recording medium near a leading edge, (ii) transports the recording medium by moving the hold member in a rotational direction of the rotating body with the hold member contained in the recessed portion, and (iii) causes the hold member to pass through the interposition region, and a controller that controls rotation of the rotating body such that the recessed portion stops at a position upstream or downstream of the interposition region in the rotational direction when an anomaly is detected.

Abstract: A nip former that forms a nip between an endless belt and a pressure rotator includes a base that is made of aluminum and has a nip forming face disposed opposite the nip. An anodic oxidation coating is treated with sealing and coats at least the nip forming face. The anodic oxidation coating has a thickness that is not smaller than 22 ?m and is not greater than 45 ?m and a variation in thickness that is not greater than 20 percent. The base and the anodic oxidation coating define a nip forming portion that is disposed opposite the nip. The nip forming portion has a thickness that is not smaller than 0.40 mm and is not greater than 1.20 mm.

Abstract: An image forming apparatus includes a sheet tray, a feed roller, a transfer roller, a fuser, a conveying unit, and a controller configured to execute a normal process. The controller executes a particular process, when performing the single sided printing. The particular process is a process in which the controller is configured to execute a non-actual-printing process on a first surface of a first sheet, and then configured to execute the non-actual-printing on a first surface of a second sheet before executing an actual-printing process on a second surface of the first sheet. The non-actual-printing process is a process of conveying the sheet to the fuser without transferring the developer image onto the first surface of the sheet. The actual-printing process is a process of transferring the developer image onto the second surface of the sheet.

Abstract: A heating device includes a heating roller having a resistance heat-generating layer that generates heat by passage of a current through the resistance heat-generating layer, a support member that supports a treatment portion in which a heating treatment is performed, a belt that is stretched between at least the heating roller and the support member and that rotates, and a pressure rotating body that rotates in such a manner as to press a sheet-shaped heating target that is an object to be subjected to a heating treatment against the treatment portion including an outer peripheral surface portion of the belt that is supported by the support member and in such a manner as to cause the heating target to pass through the treatment portion. The heating roller is not equipped with a power receiving component configured to receive a rotational power that is transmitted.

Abstract: An image forming apparatus includes a conveyer that conveys a recording medium supporting an image; a softener that softens the image; and a powder applicator that applies powder to the surface of the softened image, in which the applied powder adheres to a range that is narrower in a width direction orthogonal to a conveyance direction of the recording medium conveyed by the conveyer than a maximum width of the image to be supported by the recording medium.

Abstract: A fixing device includes a rotator, a secured member, a pressure rotator, and lubricant. The rotator has flexibility and a sleeve form. The rotator includes an inner portion having a sliding surface. The inner portion has an elastic power of 55% or more. The secured member is disposed inside a loop of the rotator and has a slide surface on which the sliding surface of the rotator slides. The slide surface has a larger hardness than a hardness of the sliding surface of the rotator. The pressure rotator presses the rotator against the secured member and forms a nip between the rotator and the pressure rotator. The lubricant is provided between the rotator and the secured member.

Abstract: A fixing device includes an endless fixing belt capable of rotational movement, a pressure roller that presses from the outside of the fixing belt, a nip forming member that is arranged on an inner circumference surface side of the fixing belt and forms a fixing nip region between the fixing belt and the pressure roller, a support member that supports the nip forming member from an opposite side to the fixing nip region, and a slide sheet provided between the fixing belt and the nip forming member. The support member includes two support portions. The slide sheet is fixed between the two support portions.

Abstract: A heating device comprising: a first rotating member having an internal space in which a heating member and a holding member are disposed; a second rotating member that contacts an outer peripheral surface of the first rotating member; and a frame that integrally supports the heating member, the holding member, the first rotating member and the second rotating member, wherein the second rotating member forms a nip portion between the first rotating member and the second rotating member, the holding member holds the heating member such that at least a part of at least one end face of the heating member in a longitudinal direction thereof is exposed in the longitudinal direction, and the frame is configured such that at least the part of the heating member, which is exposed from the holding member, is also exposed out of the frame.

Abstract: A heating device includes a heating unit that heats in a non-contact manner an upper surface of a transport material that is transported, and a blowing unit that blows air against a lower surface of the transport material via a blowing hole that is provided in an opposing surface opposing the lower surface of the transport material, the opposing surface being obliquely disposed with respect to a horizontal direction.

Abstract: A first protrusion is provided between an operation lever and a lock lever. The operation lever is for moving a pressure roller. The lock lever is provided for a sheet guide member for guiding a sheet that has passed through a fixing unit downstream in the sheet conveyance direction. The lock lever is for locking the sheet guide member at a position where the sheet guide member is engaged with a housing. The first protrusion protrudes from the sheet guide member toward an exterior cover. The first protrusion is provided with a second protrusion on the lock lever side of the first protrusion.

Abstract: The present invention provides a polyimide composite having a structural formula of PI/Fe3O4-(?-CD-Ada)x, wherein x=3-5. One aspect of the invention provides a polyimide composite. By introducing Fe3O4 as a host material of an electromagnetic wave absorption material and introducing a guest material, a repairing property of the material itself is imparted by an interaction between the host material and the guest material. Therefore, the polyimide composite has an electromagnetic radiation shielding property and a self-repairing property.

Abstract: In a fixing device according to the disclosure, a first surface of a restriction member is inclined so that, as the first surface goes further away from a nip portion, the first surface inclines toward a direction coming closer to an edge surface of the film, and the first surface is inclined so that, as the first surface comes downstream in the conveying direction, the first surface inclines toward a direction going further away from the edge surface of the film. A second surface is inclined so that, as the second surface comes closer to a center in the rotational axis direction of the film, the second surface inclines toward a direction coming closer to a roller, and inclines in a direction going downstream in the conveying direction.

Abstract: A nip formation member includes a base, a high thermal conduction member, and a securing member. The high thermal conduction member has a thermal conductivity greater than a thermal conductivity of the base. The securing member is independent from the base and the high thermal conduction member. The securing member is configured to restrict movement of the base relative to the high thermal conduction member.

Abstract: A fixing device includes a belt, a roller, a heater, a reflector board, a stay, and a thermally-conductive member. The belt is rotatable in a rotational direction. The roller is positioned to be in contact with an outer surface of the belt so as to form a nip between the roller and the belt. The heater is configured to heat an inner surface of the belt. The reflector board is configured to reflect heat generated by the heater toward the inner surface of the belt. The stay is in contact with the reflector board. The thermally-conducive member is thermally connected between the belt and at least one of the reflector board and the stay. The thermally-conducive member includes a first portion that is in contact with the belt at a first region downstream with respect to the nip in the rotational direction.

Abstract: A fixing device includes a pressing member including a nip plate, and an electron beam-irradiated fluorinated resin film is to be on an outer surface of the nip plate facing toward the backup member.

Abstract: A fixing device includes a first fixing member, a second fixing member, a heater, a temperature sensor, a sensor holder, and a first frame. The temperature sensor detects a temperature of the first fixing member or the second fixing member. The sensor holder is configured to hold the temperature sensor and is fixed on the first frame. The first frame is made of metal and includes a first bend, a second bend, a third bend, a first wall, a second wall, a third wall, and a fourth wall. The second wall is connected to the first wall via the first bend. The third wall is connected to the second wall via the second bend. The fourth wall is connected to the third wall via the third bend. The first wall and the second wall form an acute angle.

Abstract: A heating unit includes a rotating cylinder rotating about an axis parallel to a first direction. A heater having a width in a second direction is on the inner surface of the cylinder. A support member holds the heater fixed relative to the cylinder and includes an upstream member adjacent to the heater in the second direction and a downstream member adjacent to the heater in the second direction. The support member has upstream ribs on the upstream member and downstream ribs on the downstream member, each rib having a curved shape facing the inner surface of the rotating cylinder and being spaced from each other in the first direction. The heating unit may include, in some examples, a stay supporting the support member, a guide member on the stay, and a temperature sensor.

Abstract: A heater includes an electrode, a heat generator, and a plurality of layers including a first layer and at least one additional layer disposed in an opposite side with respect to a surface on which the electrode is disposed. The at least one additional layer includes at least one of a plurality of portions, a gap at a location corresponding to the electrode, existing between the plurality of portions and a single portion, at least a part of the single portion corresponding to the electrode, being relatively thinner than a part of the single portion corresponding to the heat generator.

Abstract: An imaging system includes a heating device, a conveyor belt including a surface layer located on an outer surface of the heating device to receive a printing medium, and a cooling device to cool the surface layer after the conveyor belt passes along the outer surface of the heating device. The surface layer includes a temperature sensitive material to vary an adhesive force of the conveyor belt with respect to the printing medium in response to a change in temperature of the surface layer. The adhesive force increases in response to an increase in temperature of the surface layer.

Abstract: In a fixing device according to the disclosure, a first surface of a restriction member is inclined so that, as the first surface goes further away from a nip portion, the first surface inclines toward a direction coming closer to an edge surface of the film, and the first surface is inclined so that, as the first surface comes downstream in the conveying direction, the first surface inclines toward a direction going further away from the edge surface of the film. A second surface is inclined so that, as the second surface comes closer to a center in the rotational axis direction of the film, the second surface inclines toward a direction coming closer to a roller, and inclines in a direction going downstream in the conveying direction.

Abstract: An image forming apparatus for forming an image on a recording material. The image forming apparatus includes an image forming portion, a fixing portion, an oblique movement detecting portion, and a controller. The image forming portion is configured to form the image on the recording material. The fixing portion includes a flexible cylindrical rotatable member and a roller in press contact with the rotatable member. The rotatable member and the roller are configured to form a fixing nip, in which the recording material, on which the image is formed, is nipped and fed. The oblique movement detecting portion is configured to detect oblique movement of the recording material. When the oblique movement detecting portion detects the oblique movement of the recording material, the controller increases a feeding interval of the recording material to the image forming portion.

Abstract: A heating device includes a cylindrical film configured to be rotated about an axis, a heater including a substrate that extends along a longitudinal direction parallel to the axis, and a heater element on the substrate and facing an inner surface of the cylindrical film. A heat conductor extends along the longitudinal direction and has first and second surfaces. A first portion of the heat conductor contacts the substrate and a second portion of the heat conductor has a groove in the first surface. A temperature sensing element is disposed at a position on the second surface at a position opposite the groove.

Abstract: Provided is a fixing device that makes it difficult for a sheet to adhere to a heating unit when the sheet is caught in a gap between the heating unit and a fixing member, and an image forming apparatus that includes the fixing device. The fixing device includes a fixing belt, a pressure roller, an IH heater, and convex portions. The fixing belt is rotatable. The pressure roller forms a pressure region in which the sheet is held and conveyed between the pressure roller and the fixing belt. The IH heater is such that the surface facing the outer peripheral surface of the fixing belt is formed in a shape along the outer peripheral surface, and the IH heater heats the fixing belt. The convex portions are formed on the surface of the IH heater facing the outer peripheral surface of the fixing belt.

Abstract: A fixing device includes a contact portion contacting a recording material transported; a heat source heating the contact portion and including a heat generator extending in a width direction intersecting a transport direction in which the recording material is transported, and a support portion supporting the heat generator, the heat source having a counter surface facing the contact portion, and an opposite surface; a high-thermal-conductivity portion is provided on the opposite surface of the heat source and extends in the width direction such that a part of the high-thermal-conductivity portion overlaps the heat generator of the heat source, the high-thermal-conductivity portion having a higher thermal conductivity than the support portion or the contact portion. A length of an area of overlap between the high-thermal-conductivity portion and the heat generator of the heat source in the transport direction is shorter in a width-direction central portion than in two width-direction end portions.

Abstract: An image forming method for an image forming apparatus having a fixing rotator and a pressure rotator opposite the fixing rotator includes transferring white toner and color toner onto a surface of a metallic sheet. The metallic sheet has a thermal conductivity of 0.34 W/m·K or less as measured by hot-wire method. The transferring process forms an unfixed color toner layer layered on an unfixed white toner layer on the metallic sheet. Further, the method includes conveying the metallic sheet, with the surface on which the white toner layer and the color toner layer being transferred facing the fixing rotator, between the fixing rotator heated and the pressure rotator to fix the white toner layer and the color toner layer onto the metallic sheet.

Abstract: A pair of pressure members are disposed at both ends of a pressure roller and rotatably support the pressure roller to press the pressure roller against a fixing roller including an elastic layer via a fixing belt. One of the pressure members that includes a fulcrum engaging section engaged with a rotation fulcrum at one end and is locked to a biasing member at a side opposite to the fulcrum engaging section is moved by a moving member in a direction intersecting a pressing direction of the pressure roller in a state where deformation of the elastic layer is regulated. Thus, a force acting on a fixing nip formed by the deformation of the elastic layer of the fixing roller is stabilized. As a result, the traveling performance of the fixing belt is stabilized, whereby the offset control can be performed with high accuracy.

Abstract: The present invention provides an image heating apparatus including an acquiring portion which acquires thickness information of a recording material, and a control portion controls a power to be supplied to a heating element which heats a region where the recording material does not pass through among a plurality of heating regions based on a control target temperature which is set based on the thickness information.

Abstract: A plurality of electric conductors provided on a substrate of a heater of an image heating device has a conductor group A including a plurality of first electric conductors and a conductor group B including a plurality of second electric conductors. The plurality of first electric conductors each have a first portion having a width W1 and a second portion having a width W2 smaller than the width W1, are provided on the substrate to be arranged side by side in a width direction. The plurality of second electric conductors each have a width W3 larger than the width W2, are provided on the substrate to be arranged side by side in a width direction so as to partially overlap the second portion.

Abstract: A fuser assembly includes a heated member and backup member forming a fusing nip. Nip loading springs on either ends of the fusing nip bias into contact the backup member and the heated member. Bellcranks contact the nip loading springs. Rotatable latches on either ends of the fusing nip act on the bellcranks to compress or relax the nip loading springs to open or close the fusing nip at respective distal or proximate ends of the fuser assembly. The rotatable latches are acted upon by corresponding latches of an access door of an imaging device that when opened provides access to the fuser assembly in an interior of the imaging device. The rotatable latches are independently movable. They can reside in different positions, yet allow closing the door of the imaging device.

Abstract: A fuser has a heater, a heat roller, an endless belt, a pressure pad, and a slidable sheet. The pressure pad forms a nipping portion to nip the endless belt between the pressure pad and the heat roller. The slidable sheet is interposed between an inner circumferential surface of the endless belt and the pressure pad in the nipping portion. The slidable sheet includes a plurality of dents and a plurality of projections on a surface contacting the inner circumferential surface of the endless belt. The plurality of dents are arranged in a first part of the surface of the slidable sheet. The first part is located in a range corresponding to the nipping portion. The plurality of projections are arranged in a second part of the surface of the slidable sheet. The second part is located in a range corresponding to a portion different from the nipping portion.

Abstract: A fixing device that includes a rotatable endless fixing member, a fixing heat source which heats the fixing member, a pressure member provided on the outside of the fixing member and facing the fixing member, a nip forming member provided inside the fixing member and forming a fixing nip between the fixing member and the pressure member, a nip forming support member for supporting the nip forming member, a high-thermal-conductive member provided between the fixing member and the nip forming member, an adhesive provided between the high-thermal-conductive member and the nip forming member. The thermal conductivity of the adhesive is larger than the thermal conductivity of the nip forming member and lower than the thermal conductivity of the high-thermal-conductive member.