Abstract: A structurally improved fusing roller assembly based on a heat pipe principle is provided. The fusing roller assembly includes a fusing roller that serves as a heat pipe, and a resistance heater and/or a halogen lamp inside the fusing roller, so that the surface of the fusing roller can be instantaneously heated up to a target fusing temperature. The fusing roller assembly can be heated up to a target fusing temperature within a shorter period of time without need for a warm-up period and a stand-by period, so that power consumption decreases.

Abstract: An image fixing apparatus includes a coil for generating a magnetic field; a heating medium, accommodating the coil therein, for generating heat by induction of eddy current by the magnetic field generated by the coil, wherein the heat of the heating medium is usable to heat an image on a recording material; a non-magnetic member provided between a heat generating portion of the heating medium and the coil with a gap relative to the heating medium, wherein the coil is in close contact to the non-magnetic member, and such a portion of the non-magnetic member as is in close contact to the coil extends to outside of the heating medium.

Abstract: A heater has a top-surface layer made of an imide-based resin formed on an electrical insulation layer. The heater can generally used for an image heating apparatus incorporated in an image forming apparatus. Since the top-surface layer has preferable sliding and insulating characteristics, the heater provides good heat efficiency and durability.

Abstract: In a heating-type toner-fixing unit using a ceramic heater and a cylindrical fixing film, the shape of the fixing face-side surface of a ceramic heater 10 which comes into contact with a fixing film 3 and the shape of the portions of a heater support 12 at least adjacent to the fixing face-side surface are formed into a shape that is almost identical to a naturally deformed shape of the fixing film 3 in a static state or a traveling state where the fixing film is pressed by a pressure roller 4 at a designated nip width. It is also possible that the nip portion and portions adjacent thereto at the entrance side and exit side are formed into a flat shape and portions other than the flat portions are formed into a curved surface shape along the cylindrical shape of the fixing film 3.

Abstract: An image heating apparatus for an image forming apparatus comprises a heater and a rotary member having plasticity and rotated in contact with the heater. The rotary member in the image heating apparatus has an external shape becoming larger toward the end portions in the longitudinal direction, thereby preventing generation of wrinkles or unevenness in the conveyed recording medium.

Abstract: In the head-fixing apparatus of the film heating system in an image forming apparatus, a heat capacity is controlled to be as small as possible because the quick-start property is recognized to be more importance. Thus, heat conductivity in the longitudinal direction is poor and, due to a relationship between the area where a recording material is conveyed and the heating area of the energizing heating resistance layer, a) heat is insufficient at the end portion in the initial period and b) unusual temperature rising occurs at the end portion at the time of continuous heat-fixing. In order to resolve those problem, an apparatus which can control adequately temperature at the area where a recording material is conveyed without rising temperature at the end portion of a heater as a non-sheet passing area.

Abstract: A fixing apparatus for fixing a toner image onto a recording sheet with heat includes a fixing roller having ribs formed at a sheet passing area in an axial direction thereof so as to protrude from an internal circumferential surface toward a cross-sectional center thereof. The ribs are provided along the axial direction such that a number of ribs per unit length at a center part of the sheet passing area is different from that at other parts of the area. A heating source is provided for heating the fixing roller and a pressing roller opposes and rotates with the fixing roller. The toner image is fixed onto the recording sheet while the sheet is being sandwiched and conveyed between the fixing roller and the heating roller.

Abstract: Disclosed is an externally heated, external heater member for transferring heat to a fusing member used to heat fix a toner image to a substrate, such as a fuser employed in an electrophotographic process. The heater member includes: a core; a conformable base cushion layer overlying the core; and an outer layer overlying the base cushion layer, the outer layer comprising a cured fluorocarbon thermoplastic random copolymer. In embodiments, the copolymer has subunits of: —(CH2CF2)x—, —(CF2CF(CF3))y—, and —(CF2CF2)z—, wherein x is from 1 to 50 or 60 to 80 mole percent, y is from 10 to 90 mole percent, z is from 10 to 90 mole percent, x+y+z equals 100 mole percent.

Abstract: A heated roll and a method for heating of a roll, in particular of a press roll or calender roll in a paper or board machine. The roll has a hollow, tubular roll mantle. The roll is heated with electric current by means of electrical resistors fitted inside the body material of roll mantle. The heating is preferably applied to the roll substantially at the proximity of the face of the roll mantle, and the electric current may be supplied to the electrical resistors from the ends of the roll through glide rings.

Abstract: An electrophotographic printer has neutralizing units and a fixing unit that are disposed in the transport path of a print medium. The neutralizing units neutralize a toner image surface of the print medium entering the fixing unit and a non-printed surface of the print medium exiting the fixing unit. The fixing unit includes two rollers. A fixing roller incorporates a heat source that generates heat for fusing a toner image on the print medium. A pressure roller is in pressure engagement with the fixing roller. At least one of the fixing roller and pressure roller includes a resilient member that covers a metal shaft and an insulation layer that covers the resilient member. The resilient member may contain electrically conductive whiskers that extend radially in three dimensions. The whiskers are dispersed such that a surface of the insulation layer and a surface of the shaft are electrically continuous.

Abstract: The present disclosure relates to a fusing system for fusing toner to a recording medium. In one embodiment, the fusing system comprises a fuser roller configured as a heat pipe including an inner tube and a coaxial outer tube that is mounted to the inner tube, the inner and outer tubes defining an interior space therebetween that is adapted to contain a liquid and to be evacuated so as be maintained in a vacuum, and a pressure roller in contact with the fuser roller. In another embodiment, the fusing system comprises a fuser roller, a pressure roller in contact with the fuser roller, and an external heating roller in contact with the fuser roller, the external heating roller being configured as a heat pipe including an inner tube and a coaxial outer tube that is mounted to the inner tube, the inner and outer tubes defining an interior space therebetween that is adapted to contain a liquid and to be evacuated so as be maintained in a vacuum.

Abstract: The present disclosure relates to a fusing system for fusing toner to a recording medium. The fusing system comprises a fuser roller including a metal layer, a pressure roller in contact with the fuser roller, and an external induction heating element. In addition, the disclosure relates to a method for heating a fuser roller of a fusing system comprising the steps of positioning an external induction heating element in close proximity to the outer surface of the fuser roller, delivering high frequency current to a coil of the external induction heating element to create a magnetic flux, and directing the magnetic flux toward the fuser roller so as to induce eddy currents within a metal layer of the fuser roller that generate heat within the roller.

Abstract: The present disclosure relates to a fusing system for fusing toner to a recording medium. The fusing system comprises a fuser roller including an elastomeric layer and a heat transport layer disposed around the elastomeric layer, the heat transport layer having high thermal capacity, and a pressure roller in contact with the fuser roller. The present disclosure also relates to a fusing method that helps reduce gloss variation of printed media fused to a recording medium with a fusing system. The method comprises the steps of forming a heat transport layer having high thermal capacity at an outer surface of a fuser roller of the fusing system, heating the heat transport layer, and transferring heat from the heat transport layer to the recording medium as it passes through a nip of the fusing system.

Abstract: Apparatus for processing heat processable media comprising: a rotatable heated drum for processing heat processable media having width and depth dimensions, and a plurality of rollers spaced around a portion of the periphery of said drum and in contact therewith, said rollers holding said media to said drum; wherein at least one of said drum and/or at least some of said plurality of rollers have a channel in a central region thereof, said channel having a width greater than said width dimension of said media and a depth less than said thickness dimension of said media.

Abstract: In a conductive board heater using metal as the board, since thermal expansion is large, and expansion and shrinkage are repeated in a heating apparatus, there is a defect that the electrode portion to which a power supply spring contact point on the power supply connecter side is pressurized and contacted is worn and contact inferior occurs and it is easy to break. Furthermore, since the position of the resistor pattern of the heating body varies, excessive heating, insufficient heating, uneven heating at an end portion, or uneven curl unevenness at a paper end is occurred. A heater in an image heating apparatus is provided so as to prevent a contact defect between an electrode and a connecter of image heating apparatus.

Abstract: The work involved in replacing the fixing lamps in a printer is made easy, and the non-operational period of the printer associated with such maintenance work is shortened. A portion of a fixing lamp is formed in a lamp cartridge which includes a first lamp holder for holding one end of the fixing lamp; a second lamp holder for holding the other end of the fixing lamp; and a protective member holding portion for holding a lamp protective member which is attached depending on necessity. The protective member holding portion is arranged around a region where the lamp holding member is placed, and, thereby, all of the plurality of fixing lamps are capable of being attached to and removed from the heating roller as a unit from one end of the heating roller.

Abstract: A baking oven defines a cooking space, in which a tubular, multiply bent radiant heating element is secured in a horizontally extending heating element plane. A temperature sensor for regulating the temperature of the cooking space is disposed substantially in the heating element plane and has a sensor tube that is disposed in close proximity to the radiant heating element for thermal coupling to the heating element. A temperature sensor with flexible leads is secured in the sensor tube for obtaining good coupling of the temperature sensor to the radiant heating element. The sensor tube has at least one curved portion, whereby the sensor tube curves around portions of the heating element. The heating element plane defines a measuring area lying in the heating element plane, and the temperature sensor is disposed approximately at a center of gravity of the measuring area and is substantially surrounded by the heating element.

Abstract: The present invention features a metallic resistive heater and uses thereof. The resistive heater includes a metallic component that is electrically conductive (i.e., has low resistivity) and an oxide, nitride, carbide, and/or boride derivative of the metallic component that is electrically insulating (i.e., has high resistivity). The resistivity is controlled in part by controlling the amount of oxide, nitride, carbide, and boride formation during the deposition of the metallic component and the derivative.

Abstract: A fixing device includes a heat applying coil formed by winding a wire around the circumference of a coil supporting member disposed along the inside of the cylindrical fixing roller, for heating the fixing roller by inducing an induced current therein, and a pressing roller which forms a nip portion with the fixing roller, and conveys a transfer material gripped by the nip portion between the fixing roller and the pressing roller, thereby fixing a toner image formed on the transfer material by heat energy given from the fixing roller. The heat applying coil is formed by winding a wire so as to have a shape which has parts parallel to the longitudinal direction of the coil supporting member and parts lying along the circumference of the coil supporting member. The winding density of the latter parts is higher than that of the former parts.

Abstract: The present invention relates to an image heating apparatus in which an image on a recording material is heated by heat from a heater via a film, and the film contacts a surface of the heater opposite to a surface thereof on which heat generating members are provided.

Abstract: A suitable operation temperature can be reached in a short period of time in a heat roller comprising a cylindrical metallic substrate and a heating lamp axially arranged inside said metallic substrate, the heating lamp comprising a bulb filled with a thermally conductive gas and having a filament installed therein, by using a gas whose thermal conductivity is 110×10−4 (W/m.K) or less at room temperature.

Abstract: A fusing apparatus for xerographic printing includes a fuser roll with two parallel lamps, or heating elements, therein. At power-up, power is applied to each lamp in a stair-step fashion, in which incremental increases in applied power for each lamp are staggered in time. Also during power-up, the lamps are connected in series, but the series connection is removed for a running condition. These features contribute to desirable anti-flicker effects of the whole apparatus.

Abstract: There is disclosed an image heating device, provided with a movable member including an electroconductive layer and adapted to move with a recording member, a magnetizing coil for generating a magnetic flux, provided continuously over the entire width of the movable member in a direction perpendicular to the moving direction of the movable member, and a core member for guiding the magnetic flux. The magnetic flux generated by the magnetizing coil induces an eddy current in the movable member, thereby heating an image supported on the recording member by the heat generated in the movable member by the eddy current. At least a part of the magnetizing coil is provided along the movable member not along the core member.

Abstract: A relay box is fastened to the end of a support rod supporting an induction heating mechanism, which the end is extended outside. Receptacles of connectors are mounted on a surface of the relay box. Lead wires connected to the induction coils are connected to the receptacles. Plugs are removably pin-connected to the receptacles. Power lines connecting to the exciting power source are connected to the plugs.

Abstract: An electrophotographic printer has neutralizing units and a fixing unit that are disposed in the transport path of a print medium. The neutralizing units neutralize a toner image surface of the print medium entering the fixing unit and a non-printed surface of the print medium exiting the fixing unit. The fixing unit includes two rollers. A fixing roller incorporates a heat source that generates heat for fusing a toner image on the print medium. A pressure roller is in pressure engagement with the fixing roller. At least one of the fixing roller and pressure roller includes a resilient member that covers a metal shaft and an insulation layer that covers the resilient member. The resilient member may contain electrically conductive whiskers that extend radially in three dimensions. The whiskers are dispersed such that a surface of the insulation layer and a surface of the shaft are electrically continuous.

Abstract: An image forming apparatus for forming an image on a recording material includes an image bearing member, a heater for heating the image bearing member, and a control device for controlling the heater so that a temperature of the image bearing member is maintained at a set temperature, wherein the set temperature when images are formed on both faces of a recording material is set to be lower than the set temperature when an image is formed on one face of a recording material.

Abstract: There is described a fixing apparatus, for fixing a toner image on a transfer medium by applying heat and pressure onto the transfer medium, which includes a heat ray irradiating device to irradiate heat rays and a pair of fixing rollers being hollow cylinders. The fixing roller includes a base body being a hollow cylinder and capable of transmitting the heat rays irradiated from the heat ray irradiating device, a heat-resistant resin layer formed on an outer surface of the base body and being capable of transmitting the heat rays irradiated from the heat ray irradiating device, and a heat ray absorptive layer provided on the heat-resistant resin layer.

Abstract: A heat developing method conveying, to make a heating processing on a heater surface, a heat developable image recording material is disclosed in which an image forming layer and a protection layer are formed using a polymer latex as a binder on one side of a support made prepared by subjecting a polyester biaxially drawn and crystallized with orientation to a thermal relaxation processing at a temperature equal to or higher than 130° C. and equal to or lower than 200° C.

Abstract: A fixing device for fixing a toner image on a sheet, wherein the toner image is formed by a thermally meltable toner, comprises: an induction heater to heat the toner image, the induction heater comprising a hollow rotatable conductive member, a heating member provided inside the hollow rotatable conductive member, and a sendust layer provided inside the hollow rotatable conductive member; and a pressing member to press the toner image.

Abstract: A temperature differential over a length of a fuser can result from a thermal load applied to the fuser by media having a dimension, corresponding to a longitudinal axis of the fuser, less then the length of the fuser. The temperature on regions of the surface of the fuser contacting the media is lower than on regions of the surface not contacting the media. With feedback used to control the fuser surface temperature near its center, the fuser surface temperature in regions not contacting the media can become hot enough to damage the fuser. With a heat pipe included in the fuser, heat flows from the higher temperature regions on the surface of the fuser to the lower temperature regions on the surface of the fuser, thereby reducing the peak magnitude of the fuser surface temperature and the magnitude of the temperature differential over the length of the fuser.

Abstract: A toner image fixing apparatus has a fixing roller, a pressing roller, and a heating roller. The pressing roller is normally urged toward the fixing roller for pressing a sheet with an unfixed toner image carried on a surface thereof against the fixing roller to fix the unfixed toner image to the sheet when the sheet passes in one direction through a rolling contact region between the fixing roller and the pressing roller. The heating roller is disposed on one side of the fixing roller opposite to the pressing roller. A first heat source is disposed in the heating roller for heating the heating roller, and a second heat source is disposed in the pressing roller for heating the pressing roller. An endless heat transfer belt is trained around the heating roller and the fixing roller for transferring heat from the first heat source to heat the unfixed toner image on the sheet when the sheet passes through the rolling contact region.

Abstract: A heat generating medium for image fixing includes a conductive support layer of good electrical and thermal conductivity, a low surface energy layer formed on one of the surfaces of the conductive support layer, and a heat generating layer formed on the other surface of the conductive support layer. A fixing apparatus is also disclosed, which includes the heat generating medium as described above, and a power supplying device for feeding current to the heat generating layer, wherein a recording sheet bearing a non-fixed toner image thereon is brought into press contact with the heat generating layer which generates heat when it receives current from the power supply device.

Abstract: The present invention concerns a fixing apparatus and an image-forming apparatus. The fixing apparatus and the image-forming apparatus include a heating roller; a heating element disposed in the heating roller; a pressing roller pressure-contacting the heating roller to fix an image onto a transfer sheet passing through a pressure-contacting section between the heating roller and the pressing roller; and a cooling device to cool the heating roller. In the fixing apparatus, the cooling device is activated during a predetermined time period after consecutive fixing operations are completed. While, the image-forming apparatus further includes a control section to activate the cooling device during a predetermined time period after consecutive fixing operations are completed.

Abstract: A fusing apparatus for fusing toner images on a receiver medium. The fusing apparatus includes a fuser member having a contact surface and a pressure member having a contact surface. The pressure member is positioned adjacent the fuser member for forming a nip therebetween to receive the receiver medium. The pressure member controllably exerts pressure on the fuser member and the receiver medium. A first heater member has a contact surface and is positioned adjacent the fuser member and external thereto, the surface of the heater member contacting the surface of the fuser member to transfer heat to the fuser member. The fuser member heats the toner image on the receiver medium thereby fusing the toner image to the receiver medium. A first radiant heat assembly is positioned externally of the first heater member for controllably heating the contact surface of the first heater member.

Abstract: The present invention prvides a fixing apparatus, comprising a first rotating member, first heating device for heating the first rotating member, a second rotating member for forming a nip together with the first rotating member, wherein a recording material bearing an unfixed image thereon is nipped and conveyed at the nip in such a manner that the unfixed image is in contact with the first rotating member, and the unfixed image is fixed by heating on the recording material, voltage applying device for applying voltage to create potential difference between the first rotating member and the second rotating member, and wherein the second rotating member has a conductive parting layer on a surface threreof, second heating device for heating the second rotating member.

Abstract: A device configured to be heated to a temperature sufficient to fuse an image forming substance to a sheet includes a hollow roller made of a conductive material and a coil arranged in a hollow portion of the hollow roller. The coil is configured to carry an electrical current that induces a current in the conductive material of the hollow roller such that the hollow roller becomes heated so as to fuse toner to a sheet. The coil is mounted on a member that is disposed in the hollow portion of the roller. The member includes various combinations of features that permit a reliable and safe operation of the induction heating apparatus such as recess and projections formed in the member to separate respective turns in the coil, a hollow center of the member that can be ventilated with a ventilation fan, and predefined gaps being maintained between the inside surface of the hollow roller and an outer surface of the coil.

Abstract: A fixing device using induction heating for an electrophotographic image forming apparatus includes a heat roller and a press roller for fixing a toner image on a recording medium while conveying the recording medium. A coil unit is located outside of the heat roller and upstream of a nip between the heat roller and the press roller in the direction of rotation of the heat roller for generating an induced magnetic flux. The coil unit concentratedly heats the heat roller and thereby efficiently feeds heat to the recording medium.

Abstract: A fixing device includes a first rotation member formed hollow cylindrical and rotatable in a predetermined direction, a second rotation member brought into contact with the first rotation member at a predetermined pressure, so as to be rotated as the first rotation member rotates, creating a contact section with the first rotation member, through which an object to be heated can pass, a first induction heating device, provided within the first rotation member, for applying an alternating magnetic field which is in parallel with a circumferential direction of the first rotation member, onto the first rotation member, and a second induction heating device, provided within the first rotation member such as to surround an outer section of a part of the first induction heating device, and be close to both end portions of the first rotation member, for applying an alternating magnetic field which is in parallel with a circumferential direction of the first rotation member, onto the first rotation member, the fixin

Abstract: A is moved, the heating members heat treatment apparatus 18 for subjecting a sheet A, which must be subjected to heat treatment, to heat treatment by transferring the sheet along the surface of a heating member, the heat treatment apparatus incorporating: at least two heating members 120, 320 fixedly aligned in a direction in which the sheet A, which are arranged to subject the sheet A to heat treatment which is performed at a predetermined temperature; transferring mechanism for sliding and transferring the sheet A along the surface of each heating member; and a pressing mechanism 122, 322 for pressing at least a portion of the sheet A which is being transferred, against the surfaces of the heating members.

Abstract: A fixing apparatus for fixing a toner image on a transfer material by applying heat and pressure onto the transfer material comprising a ray radiating device for radiating heat rays inside, and being provided with a cylindrical ray-transmitting base member having transmittance for the heat rays, a cylindrical ray-transmitting elastic layer or ray-transmitting heat insulating layer having transmittance for the heat rays, and a heat ray absorbing layer for absorbing the heat rays outside the ray-transmitting elastic layer or the ray-transmitting heat insulating layer to form a roll-shaped rotary member for applying heat, wherein, in the case where the fluctuation of the thickness of the ray-transmitting base member and the fluctuation of the thickness of the ray-transmitting elastic layer or the ray-transmitting base member as a single layer and the heat ray absorbing ratio (%) per unit thickness (mm) in the ray-transmitting elastic layer or the ray-transmitting heat insulating layer as a single layer is made e

Abstract: A thermal conduction roller (10) has a tubular roller core (11) with an inside surface; and an electrical insulator coat (16) primarily of zirconia on the inside surface, a heater coat (18) of titania or a titania blend is disposed over the insulator coat (16), and at least two electrical contact assemblies that are disposed inside the roller and electrically connect to the heater coat (18) as the roller (10) is being rotated. One embodiment utilizes an electrical insulator coat (16) in a range of thickness from about ten mils to about twenty mils. A thinner coat may not have sufficient dielectric strength, while a thicker coat decreases thermal conduction. A release material (12) is applied to the outside of the roller (10). Various contact structures according to the present invention are also described in detail, including one especially adapted to connect to a three-phase power supply.

Abstract: During an initial setting period, if there is a tendency for a belt to move sideways due to tolerance when components are assembled in the initial setting, inclination in the axial direction of a driven roller can be changed after the components are assembled, to adjust degree of tension at both end portions in the transverse direction of the belt wound at a driven roller. Accordingly, the tendency for the belt to move sideways caused during assembly of the components can be corrected. Further, when there are changes over time (reduced elasticity of the belt, changes in the positioned state of rollers, or the like), sideways movement may occur during operation. However, in these cases, since a tapered auxiliary roller is attached at each of end portions in the axial direction of the rollers so as to be able to rotate relatively to the respective roller that is the base body thereof, when the belt moves sideways onto the auxiliary rollers the belt can be promptly returned to its original position.

Abstract: A suitable operation temperature can be reached in a short period of time in a heat roller comprising a cylindrical metallic substrate and a heating lamp axially arranged inside said metallic substrate, said heating lamp comprising a bulb filled with a thermally conductive gas and having a filament installed therein, by using a gas whose thermal conductivity is 110×10−4 (W/m.K) or less at room temperature.

Abstract: A heater includes a substrate having a high heat conductivity; a resistive layer on the substrate, for generating heat up on electric power supply; an output electrode on the substrate; and a temperature sensing element having an output portions placed on top of the output electrodes.

Abstract: A heated fuser roller that includes an elongated roller and a series of heating wires extending axially through the roller. The heating wires are positioned near the surface of the roller. Voltage is applied from a power source to the heating wires through conductive disks mounted on each end of the roller. A conductive wiper, shoe or other suitable contact device slides along each disk to maintain the electrical connection between the disks and the power source as the roller rotates.

Abstract: A localized heating device includes a laminate structure of a heat insulating substrate, a heating region made by sandwiching a heating layer between a pattern electrode layer and a conductive layer and a low surface energy layer. In another aspect of the invention, a localized heating apparatus includes a localized heating device and a power supply system that supplies a current selectively and stably to the heating layer between the pattern electrode layer and the conductive layer from the current supply portion formed at one or both end portions of the heating region.

Abstract: A method and device for a paper calender that includes at least one first roll, an elastic cover comprised of plastic, and at least one heatable roll. The at least one heatable roll is heatable by means of a heating device. The at least one heatable roll supports the elastic cover. In addition, the at least one first roll can likewise be made to be heatable so that the paper web can be supplied with heat from both sides.

Abstract: A heating roller 10 comprises a surface layer 157 formed of a prepreg material including carbon fibers having a high tensile strength and a high elastic modulus, and a heating unit 153 mounted in the inner area of the surface layer and communicated to a power supply unit 30 formed of a prepreg material including carbon fibers having a high electric resistance. A metal material working as an electrode 20 communicated to the power supply unit 30 and the heating unit 153 is mounted to both ends of the heating roller 10. The electric resistance of the heating unit 153 is adjusted either by changing the thickness (number of laminated layers) of the prepreg material including carbon fibers, or by adjusting the mounting angle of the carbon fibers inside a prepreg material being laminated and the angle of the carbon fibers inside another prepreg material being laminated.

Abstract: A fixing device has first and second rollers respectively formed of a metallic cylindrical body provided with an elastic member. The rollers are abutted against each other so that the elastic members contact each other. The fixing device further has a heater for heating at least one of the rollers and a driver for rotating at least one of the rollers so that a transfer sheet passes through contact portion of the rollers. Roller hardness of the first roller is smaller than that of the second roller, and density of cross-link of the elastic member of the first roller is lower than that of the elastic member of the second roller.

Abstract: A godet for advancing, guiding, and heating an advancing synthetic filament yarn, which includes a rotating godet casing, which is cup shaped and is mounted over a stationary, tubular support. In the space formed between the godet casing and the support, a radiation heater is arranged on the circumference of the support, and the radiation heater is formed by a heating coil which is wound about the support with a plurality of windings. The coil has over its length different spacings between adjacent windings to provide non-uniform heating along the length of the casing and thereby compensate for the non-uniform cooling of the casing which naturally occurs.