CN1170210C - Fixing roll assembly of electronic photography image-forming device - Google Patents
Fixing roll assembly of electronic photography image-forming device Download PDFInfo
- Publication number
- CN1170210C CN1170210C CNB011431660A CN01143166A CN1170210C CN 1170210 C CN1170210 C CN 1170210C CN B011431660 A CNB011431660 A CN B011431660A CN 01143166 A CN01143166 A CN 01143166A CN 1170210 C CN1170210 C CN 1170210C
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- Prior art keywords
- roller
- fixing roller
- heat pipe
- outer roller
- resistance
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G15/00—Apparatus for electrographic processes using a charge pattern
- G03G15/20—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat
- G03G15/2003—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat using heat
- G03G15/2014—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat using heat using contact heat
- G03G15/2053—Structural details of heat elements, e.g. structure of roller or belt, eddy current, induction heating
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/0095—Heating devices in the form of rollers
Abstract
A structurally improved fusing roller assembly based on the heat pipe principle is provided. The fusing roller assembly includes a fusing roller and a heat pipe coaxially mounted inside the fusing roller. A resistance heater is helically wound around the exterior cylindrical surface of the heat pipe, and rests between the inner cylindrical surface of the fusing roller and the exterior cylindrical surface of the heat pipe. The heat pipe is hermetically sealed. The sealed inner space is partially filled with a working fluid. The surface of 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 warm-up and stand-by period, so that power consumption decreases.
Description
Technical field
The present invention relates to the fixing roll assembly device of electrophotographic imaging forming apparatus, especially relating to can be with the fixing roller device and the manufacture method thereof of the electrophotographic imaging forming apparatus of the instantaneous heating of low energy consumption.
Background technology
At common electrophotographic imaging forming apparatus for example in duplicating machine and the laser printer, when near the electrostatic charging roller rotation of photoreceptor drum, be coated in the lip-deep photosensitive material uniform charging of photoreceptor drum.The photosensitive material of this charging is exposed to by in laser scan unit (LSU) laser beam scanned, and like this, an electrostatic latent image forms on photosensitive material with preassigned pattern.Developing apparatus is supplied with toner to photosensitive material, so that the latent electrostatic image developing that will be formed on the photosensitive material becomes visual toner image.When this photoreceptor drum was loaded with toner image, predetermined transfer voltage was supplied with the transfer roll that contacts with the photoreceptor drum with predetermined force.At this moment, when printing paper supplied in the gap between transfer roll and the photoreceptor medium, the toner image that is formed on the photosensitive material was transferred on the printing paper.The instantaneous heating transfer of fixation unit that comprises fixing roller has the printing paper of toner image, thus with this toner image on printing paper.Usually, Halogen lamp LED is as the thermal source of fixation unit.Halogen lamp LED is installed in the inside of fixing roller, and by radiation heat the surface of fixing roller is heated to target temperature.
Common, with the fixing roller device of Halogen lamp LED as the electrophotographic imaging forming apparatus of thermal source in, the outside surface of fixing roller must can produce heat, therefore, fixing roller outwards heats internally by the radiation heat of Halogen lamp LED.Pressure roll is positioned at below the fixing roller.When the paper of the toner image that is loaded with powder type between fixing roller and pressure roll by the time, paper is with predetermined force hot pressing, toner image by fixing roller and pressure roll heat and the power photographic fixing on printing paper.
Can detect the surface temperature of fixing roller and convert this surface temperature to electric signal with thermistor, can come the power supply of sever supply Halogen lamp LED with thermostat.
Unnecessarily consume a large amount of electric energy with Halogen lamp LED as the common fixing roller paper of thermal source, and when imaging device is opened with imaging, needed the quite long hot machine time.In other words, the waiting period of having one after the energising, arrive target temperature up to the temperature of fixing roller, for example be tens seconds to a few minutes.I find that for common fixing roller device, because fixing roller heats by the radiation heat that thermal source sends, pyroconductivity is very low.Especially, owing to the compensation that contacts the temperature variation that causes that the thermo roll temperature reduction produces with printing paper will postpone, therefore, be difficult to evenly control along the Temperature Distribution on the fixing roller axial length.Even in the standby mode of the operation suspension of printing machine, also power supply regularly so that keep the temperature constant of fixing roller, thereby causes unnecessary power consumption.And, fixing roller to be consumed a large amount of time from the operator scheme that its standby mode is converted to output image, thereby make the image of generation can not quick print.
A kind of possibility of common fixing roller device is the heating plate that adopts in the bottom that is arranged in flexible cylindrical film pipe (film tube), and employing simultaneously is installed in the pressure roll below this heating plate.This film pipe rotates by independent rotary unit, and carries out spot heating and distortion on the part between heating plate and the pressure roll.Although think that this method by heating plate spot heating film pipe helps reducing power consumption, it is unsuitable for high speed printing.
The clear 58-163836 of Japanese patent application Nos. (September 16 nineteen eighty-three), flat 3-107438 (on May 13rd, 1991), flat 3-136478 (on June 7th, 1991), flat 5-135656 (on June 7th, 1993), flat 6-29663 (on November 30th, 1994), flat 6-316435 (on Dec 20th, 1994), flat 7-65878 (March 24 nineteen ninety-five), flat 7-105780 (April 28 nineteen ninety-five), flat 7-244029 (September 22 nineteen ninety-five), flat 8-110712 (on May 1st, 1996), flat 10-27202 (on February 9th, 1998), flat 10-84137 (on March 30th, 1998), flat 10-208635 (on July 8th, 1998) discloses the heat pipe that is loaded in the fixing roller device.
Adopt this fixing roller of heat pipe instantaneously to heat, thereby reduced power consumption.When changing between standby mode and printing work pattern, the time delay of fixing roller device is also very short.Especially, disclosed fixing roller device has adopted dissimilar thermals source at an end of fixing roller in the flat 5-135656 of Japanese patent application Nos., flat 10-84137, flat 6-29663, flat 10-208635, and this thermal source is positioned at outside the photographic fixing zone.The heat source configurations of these fixing roller devices has increased the volume of fixing roller device, needs complicated structure.Therefore, need improve the structural complexity of this fixing roller device.
Disclosed fixing roller device has the thermal source that is positioned at its fixing roller in the clear 58-163836 of Japanese patent application Nos., flat 3-107438, flat 3-136478, flat 6-316435, flat 7-65878, flat 7-105780 peace 7-244029, like this, the also remaining problem that has increased the volume of said apparatus.But, each fixing roller has been installed a plurality of local heat pipes, thereby makes the manufacturing complexity of this fixing roller device.And the temperature deviation that has caused between heat pipe contact portion and the non-heat pipe contact portion is arranged in the part of heat pipe.
Summary of the invention
In order to solve these and other problem of this area, an object of the present invention is to provide a kind of electrophotographic imaging forming apparatus and method.
Another object of the present invention provides a kind of improved fixing roller and fixation method.
Another object of the present invention provides a kind of fixing roller device that is used for electrophotographic imaging forming apparatus, and in this fixing roller device, the local temperature deviation of fixing roller reduces significantly, thereby has improved overall heat distribution feature.
An also purpose of the present invention provides a kind of fixing roller device that is used for electrophotographic imaging forming apparatus, and this fixing roller device is easy to make, and is designed to make the increase of this fixing roller plant bulk to reduce to minimum.
An also purpose of the present invention provides a kind of fixing roller, and this fixing roller can enter its printing state from its waiting status in very short time.
An also purpose of the present invention provides higher electrophotographic method of a kind of efficiency and device.
But an also purpose of the present invention provides a kind of fixing roller, constitute the method for fixing roller and with the method for formed electrostatic image on from toner fixing to printed medium, can make the temperature of fixing roller be converted to the assembly of working temperature from room temperature simultaneously in addition in very short time.
But an also purpose of the present invention provides a kind of fixing roller, constitute the method for fixing roller and with the method for formed electrostatic image on from toner fixing to printed medium, can make the temperature of fixing roller be held in the assembly of room temperature simultaneously in addition in the operating period of waiting for.
But an also purpose of the present invention provides a kind of fixing roller, constitute the method for fixing roller and with the method for formed electrostatic image on from toner fixing to printed medium, can improve in addition simultaneously fixing roller cylindrical outer surface thermal equilibrium and make the local temperature difference of this outside surface reduce to minimum assembly.
In order to realize these and other objects of the present invention, in first embodiment, provide a kind of fixation method and fixation unit, this fixation method and device can adopt heat pipe, and this heat pipe is in the two ends gas-tight seal, so that keep vacuum in the inside heat pipe cavity.The internal cavities of this heat pipe is equipped with the working fluid of scheduled volume.The coaxial hollow interior that is installed in the cylindricality fixing roller of this heat pipe, heater twines around the cylindricality external helicoid of heat pipe, and in the annular gap between the cylindrical internal surface of this heat pipe and fixing roller.
Description of drawings
By following detailed description also in conjunction with the accompanying drawings, can understand the present invention and many advantages of the present invention better, in the accompanying drawings, identical reference number is represented identical or similar parts, in the accompanying drawing:
Fig. 1 is the skeleton view of ordinary electronic electrophotographic imager;
Fig. 2 is the cut-open view of the fixing roller device of common, electrophotographic imaging forming apparatus;
Figure 3 shows that the structure of the fixation unit of electrophotographic imaging forming apparatus, this fixation unit comprises common fixing roller device.
Figure 4 shows that the structure of the fixation unit of electrophotographic imaging forming apparatus, this fixation unit comprises different common fixing roller devices.
Fig. 5 is the cut-open view of the fixation unit of electrophotographic imaging forming apparatus, and this fixation unit comprises first embodiment of the fixing roller device that constitutes according to the principle of the invention;
Fig. 6 is the fragmentary, perspective view of the structure of fixing roller device shown in Figure 5, does not wherein represent the detailed structure of heat pipe;
Fig. 6 A is the broken section detail drawing of heating resistor coil shown in Figure 6;
Fig. 6 B, 6C and 6D are depicted as the sequence of steps that constitutes the fixing roller device according to the principle of the invention;
Fig. 7 is the cut-open view of the inner structure of fixing roller device shown in presentation graphs 5 and 6;
Fig. 8 is the cross sectional detail of expression mode of operation embodiment illustrated in fig. 7;
Fig. 9 is two coordinate curves that the expression temperature changes as the function of time;
Figure 10 is the cut-open view according to second embodiment of the fixing roller device of principle formation of the present invention;
Figure 11 is the partial longitudinal section of the X part of expression fixing roller device shown in Figure 10;
Figure 12 is the cross sectional detail of expression mode of operation embodiment illustrated in fig. 10;
Figure 13 is two coordinate curves that the expression temperature changes as the function of time;
Figure 14 is the curve map that the thing of expression working fluid changes as the function of temperature rising and heat pipe working time;
Figure 15 represents the inner structure of heat pipe, and marks the heat transfer direction, with the variation of expression liquid-gas phase;
Figure 16 is the curve map that the expression saturation pressure changes as the function of the saturation temperature of FC-40 and distilled water, and this distilled water is separately as working fluid;
Figure 17 is that the ultimate tensile strength of heat resistant materials such as aluminium, copper and 304 stainless steels is as the function of temperature variation and the curve map that changes;
Figure 18 A and 18B represent when using FC-40 and distilled water as working fluid respectively, the curve map of the relation of the maximum allowable stress on the heat pipe wall and maximum stress variation and temperature variation;
Figure 19 A and 19B represent when using FC-40 and distilled water as working fluid respectively the curve map that maximum stress changes with heat pipe thickness (T); And
Figure 20 and 21 is expression first embodiment for above-mentioned fixing roller device, the curve map of the temperature time to time change in the middle part of fixing roller.
Embodiment
Figure 1 shows that common electrophotographic imaging forming apparatus, wherein, electrophotographic imaging forming apparatus comprises that paper outlet 1, keypad 2, control panel lid 3, top cover open button 4, paper display window 5, multi-purpose feeder 6, paper bin 7, optional box 8 and auxiliary paper support 9.
Fig. 2 is the cut-open view of the fixing roller device of common, electrophotographic imaging forming apparatus, this fixing roller device with Halogen lamp LED as thermal source.Fig. 3 is the cut-open view when the fixing roller among Fig. 2 is used for common electrophotographic imaging forming apparatus, and this fixing roller has a Halogen lamp LED and the pressure roll as thermal source.With reference to figure 2, common fixing roller device 10 comprises a cylindricality fixing roller 11 and a heater 12, and this heater 12 is Halogen lamp LED for example, and in fixing roller 11.Because the outside surface of fixing roller 11 must be able to be given birth to heat, therefore, fixing roller 11 is outwards heating internally by the radiation heat of heater 12.
With reference to figure 3, pressure roll 13 be positioned at fixing roller 11 below, this fixing roller 11 has the coating 11a that is formed by Te Fulong (Teflon).This pressure roll 13 is by spring assembly 13a elastic bearing, so that will press to fixing roller by the paper of process between this fixing roller 11 and pressure roll 13 with predetermined force.When printing paper is loaded with the toner image 14a of powder type and between this fixing roller 11 and pressure roll 13 time, printing paper 14 is by predetermined force hot pressing.In other words, toner image 14a by the heat that produces by fixing roller 11 and pressure roll 13 and power photographic fixing on printing paper 14.
Utilize Halogen lamp LED unnecessarily to consume a large amount of electric energy, and open so that need the quite long hot machine time during imaging at imaging device as the common fixing roller device of thermal source.In other words, after the energising one period stand-by period, reach target temperature up to the temperature of fixing roller 11, for example wait for tens seconds to a few minutes.For common fixing roller device, because the radiation heat of fixing roller by thermal source heats, so the coefficient of overall heat transmission is low.Especially, to owing to the compensation that contacts the temperature variation that causes that the thermo roll temperature reduction produces with printing paper will postpone, therefore, be difficult to evenly control along the Temperature Distribution of fixing roller.Even in the standby mode of the operation suspension of printing machine, also power supply regularly so that keep the temperature constant of fixing roller, thereby causes unnecessary power consumption.And, will to consume a large amount of time from the operator scheme that standby mode is converted to output image, thereby the image of generation can not be exported fast.
Fig. 4 is the cut-open view that is used for the common fixing roller device of electrophotographic imaging forming apparatus.Heating plate 22 places the bottom of flexible cylindrical film pipe 21, pressure roll 23 be installed in heating plate 22 below.This film pipe 21 is by independent rotary unit rotation, and the part between heating plate 22 and pressure roll 23 produces distortion.The advantage of this method by heating plate 22 spot heating film pipes 21 is that power consumption is low.But, the method for this spot heating is unsuitable for high speed printing.
Fig. 5 has represented a kind of fixation unit of electrophotographic imaging forming apparatus, this fixation unit comprises first embodiment of fixing roller device of the present invention, and Fig. 6 is the skeleton view of Fig. 5, has represented the structure of fixing roller device in more detail, and Fig. 7 is the sectional side elevation of the fixing roller device in Fig. 5 and 6.
With reference to figure 5,6 and 6A, fixation unit 200 comprises: a photographic fixing roller arrangement 210, and this fixing roller device 210 promptly turns clockwise as shown in Figure 5 along the direction rotation that makes printing paper 250 outputs that have toner image 251; And a pressure roll 220, this pressure roll contacts and is rotated counterclockwise with this fixing roller device 210.This fixing roller device 210 comprises: a cylindricality fixing roller 212, and this fixing roller 212 has the outer cylindrical coating 211 of protectiveness, and this cylindricality coating 211 is formed on the surface of fixing roller 212 by applying Telfon; And a heater 260, this heater 260 is installed in the fixing roller 212.The thermistor 230 that is used to detect the surface temperature of fixing roller 212 is installed in the top of fixing roller 212.
The thermistor 230 that is used to detect the fixing roller 212 and the surface temperature of protective seam 211 is installed on the fixing roller 212 and with protective seam 211 and contacts.The thermostat 240 of powering that is used for cutting off the electricity supply when the surface temperature of fixing roller 212 and protective seam 211 increases fast also is installed in fixing roller 212.
Thermistor 230 directly contacts with protective seam 211 physics, and detects the temperature of protective seam 211.The inner space that is formed by the inside cylindrical cavity 242 of fixing roller 212 is occupied by heater 260.Heating unit 213 can be made by the spiral resistance heating coil, install and the direct multi-circle spiral flow coil that contacts with the inside cylindrical wall physics of fixing roller 212 along internal cavities 242.This heating unit 213 comprises by the resistance material heating wire 213a that makes of siderochrome (Fe-Cr) or tweezer chromium (Ni-Cr) coil for example, by dielectric substance for example the electric insulation coating layer 213c that makes of magnesium oxide (MgO) protect this heating wire 213a.The insulating coating 213b of heating unit 213 prevents heating wire 213a distortion or characteristic changing, and this heating wire 213a distortion or characteristic changing are easy to produce when overtime, perhaps owing to the temperature variation of back with the working fluid 214 of introduction causes.By the material of relative inertness for example the outer 213b that makes of stainless steel form protective sleeve around insulation course 213c.The two ends of well heater 213a are not coated with coating 213b, so that electrically contact in the formation of the two ends of fixing roller 212.Handle with seal 213d at last at the two ends of coating 213b, is exposed in the air so that prevent the dielectric layer 213c that is formed by MgO.Preferably, seal 213d is by zirconia (ZrO
2) pottery makes, to increase thermotolerance, corrosion resistance and permanance.Preferably, the resistance of this heating unit 213 is: for the 220V alternating current is 25-40 Ω, is 5-20 Ω for the 110V alternating current.
Shown in Fig. 6 B, 6C and 6D, the radially distance between the opposed inner walls of the inside cylindrical surface 246 of fixing roller 212 is d
1, and the diameter on the outer cylindrical surface of multi-turn heating unit 213 is d
2Shown in Fig. 6 B, heating unit 213 spirals are wound in the solenoid of multi-turn, and substantially around the whole axial length on the outer cylindrical surface of heat pipe 262.The mean diameter of the outer cylindrical of multi-turn heating unit 213 is d
2, this d
2Less times greater than d
1Shown in Fig. 6 C, oppositely axial force F is applied on the electrode 215 of axial opposite end of coil 213, so that the diameter of coil 213 is reduced to less than d
1Value, at this moment heat pipe 262 and heating unit 213 are inserted in the internal cavities 242 of fixing roller 212 together coaxially.Shown in Fig. 6 D, by removing power F, the outside surface of each ring of coil 213 directly contacts and thermo-contact with the interior perimeter surface physics of fixing roller 212; Remove power F and make that the diameter of outer cylindrical of coil 213 is d in fact,
1, equal the internal diameter of fixing roller 212.Pitch between the adjacent ring of coil 213 must not equate.But, importantly each ring of coil 213 most of or all outer surface in directly contacting and thermo-contact with inside cylindrical surface 246 physics of heat pipe 212.
Then, shown in the transition between Fig. 6 C and Fig. 6 D, in case heater 260 is installed in the internal cavities 242 of fixing roller 212, inside to heat pipe 262 applies air pressure, so that the cylindrical wall of heat pipe 262 is radially outward expanded, inside surface up to heating unit 213 directly contacts with the cylindrical outer surface physics of heat pipe 262 substantially, and the outside surface of this heating unit 213 directly and inside cylindrical surface 246 physics and the thermo-contact of fixing roller simultaneously.Then, the working fluid 214 of the scheduled volume of packing in the internal cavities of heat pipe 262, and heat pipe is at the predetermined pressure lower seal.
Working fluid 214 is loaded in the seal cavity of heat pipe 262, and heater is installed around the cylindricality of this heat pipe 262 is outside.The volumetric quantity of the working fluid 214 of packing into is the 5-50% of the internal capacity 268 of heat pipe 262, preferred 5-15%.Principle according to heat pipe, working fluid 214 can prevent to rotate the local surfaces temperature deviation of fixing roller 212, otherwise will be owing to existing heating unit 213 to produce the local surfaces temperature deviation, this working fluid plays the evenly effect of the thermal medium of heating of whole cylindricality volume that can make heat pipe 262, also play simultaneously can be in the time shorter than the used time of current common unit the even whole cylindricality volume of heat fixing roll 212.As about 5% time less than the volume of fixing roller 212 of the volumetric quantity of working fluid 214, the evaporate to dryness phenomenon may appear, and at this moment, after evaporation took place, working fluid can not evaporate at once and liquefy fully.
With reference to figure 7, end cap 264 is connected axial two opposite ends of heat pipe 262, so that the inside axial cavity of heat pipe sealed 262, thereby form vacuum-packed inner space 268.The line end that axially connects of coil 213 forms electrode 215, and this electrode axis is to stretching out heat pipe 262, so as with electric contact piece for example the work of slip ring (not shown) cooperate, this electrical connector provides the electric current by coil 213.Nonconducting lining also can be installed on the outer cylindrical surface of fixing roller with the cap body (gear-binging cap) that is stained with gear.Electrode 215 is connected with the conductive tips lead-in wire conduction of the heater coil 213 of heater 260.Although the member of heater coil 213 and electrode 215 does not describe in detail with being electrically connected of power supply, this structure is easy to realize.
When manipulating, the fixing roller device 210 with said structure is by an independent rotary unit rotation.For this reason, additional parts can be installed.For example, the cap body that is stained with gear is the optional feature that a kind of rotation spur gear required with driving 210 rotations of fixing roller device cooperates.
In the fixation unit 200 of electrophotographic imaging forming apparatus in accordance with the principles of the present invention, when electric current flows in the heater coil 213 by electrode 215, in the time of promptly from power supply inflow heater coil 213, because resistance is given birth to heat when electric current flows through the solenoid 213 of heater 260, therefore heater coil 213 produces heat, and fixing roller 212 from inside to outside heats by the heat of this generation.Simultaneously, the working fluid 214 that is loaded in the heat pipe 262 evaporates by this heat.On the cylindrical wall of the heat transferred fixing roller 212 that is produced by solenoid 213, simultaneously, the working fluid that the body of fixing roller 212 is evaporated evenly heats.Therefore, the surface temperature of fixing roller 212 will reach the target fixing temperature in the very short time.
Core (wick) 244 forms cylindricality and plays effect capillaceous, and this core 244 is made by the porous layer or the screen cloth of metals such as copper or stainless steel; This core 244 can be arranged along the interior perimeter surface 266 of heat pipe 262.The suitable material of heat pipe 262 is listed in table 2.Foregoing FC-40 or water (distilled water), or the material of listing in table 3 can be used as working fluid 214.When selecting water (distilled water) as working fluid 214, the fixing roller device can be low-cost and do not have to realize under the situation of environmental problem.In case the temperature of fixing roller 212 reaches the target fixing temperature that toner image is carried out photographic fixing, toner image transfer printing (being permanent bonding) is to printing paper.The printing paper that toner image is arranged when transfer printing is during from fixing roller 212 heat absorptions, and the working fluid of evaporation becomes its liquid phase again in the internal cavities 268 of heat pipe 262.This liquefied working fluid can heat with evaporation by heater 260 subsequently once more, and like this, the temperature of fixing roller 212 can remain on predetermined temperature.
When the fixing temperature of toner was in 160-180 ℃ of scope, the fixing roller device that constitutes according to the present invention can reach target temperature in about 10 seconds.Then, according to the surface temperature of the fixing roller 212 that is detected by thermistor 230, the surface temperature of fixing roller 212 is supplied with the electric current of heating unit 213 by disconnection and is remained in the predetermined temperature range by thermistor 230.When thermistor 230 and controller can not this surface temperatures of suitable control, when thereby the surface temperature that makes fixing roller 212 raises suddenly, be positioned near and the close surface temperature of operating the thermostat 240 detection fixing rollers 212 of (close operaional) of energy of cylindrical surface of fixing roller 212, and the electric current of sever supply coil 213, overheated to prevent.This powered operation can change according to target temperature.Should be known in that powered operation can be switched on by for example cycle, outage is controlled or working cycle be controlled than such control method.
Fixing roller device with aforementioned structure can be made as follows:
(a) prepare the material of a metal catheter (pipe) as fixing roller;
(b) prepare a metal tube (tube) as the heat pipe member;
(c) pass through to wash metal catheter and metal tube, thereby clean the exposed surface of this metal catheter and metal tube with distilled water or volatile liquid;
(d) by clean the exposed surface of spiral resistance heating coil with distilled water or volatile liquid washing spiral resistance heating coil;
(e) the spiral resistance heating coil is wound in external diameter equals or less times greater than the solenoid of metal catheter internal diameter, and is wrapped on the circular outer cylindrical body of heat pipe;
(f) can selectively insert the core that forms cylindricality, so that the inside cylindrical surface of alignment heat pipe;
(g) with the opposite end (base end) of end caps heat pipe, like this, also be left the working fluid import, the two ends of while around the resistance heating coil that the heat pipe spiral twines go between as electrical lead;
(h) heat pipe that will support the heater coil of spiral winding inserts in the metal catheter coaxially;
(i) by high-pressure inert gas the heat pipe of sealing is expanded, thereby the cylindrical shell of heat pipe is radially expanded, each circle up to heater coil directly contacts and thermo-contact with the inside cylindrical surface of fixing roller and the outer cylindrical surface physics of heat pipe simultaneously, perhaps can be selectively radial separations gap minimum between the inside cylindrical surface of the outer cylindrical surface of heat pipe and fixing roller;
(j),, thereby in this internal capacity, produce vacuum in the internal capacity of pipe so that gas is discharged by exhaust, heating and cooling heat pipe and the gas that will have nothing to do is removed in the internal capacity of heat pipe;
(k) pass through the 5-50% volume is injected in the working fluid import in the internal cavities of heat pipe working fluid (for example FC-40 or distilled water);
(1) the working fluid import of heat pipe sealed;
(m) surface of usefulness Te Fulong (Teflon) spray metal conduit, and dry and this metal catheter of polishing are so that form protective finish on fixing roller;
(n) will insert an end of fixing roller as the non-conductive lining of bearing; And
(o) metal, heat resistant plastice or epoxy resin cap body that make, that gear is housed is installed in an end of fixing roll assembly.
In the manufacture process of fixing roller device, if adopted core, when after core inserts, metal catheter welds when adding uppercap body with cap body 264 at its axial two ends, by the working fluid import argon gas is injected in the internal cavities 268 of metal tube, so that prevent the metal catheter oxidation.Before working fluid is injected heat pipe, the gas that will have nothing to do is removed from this internal capacity 268, this internal capacity is drained, and heating and cooling repeatedly under vacuum condition, so that all gas is discharged the internal capacity of heat pipe, thereby remove the whole foreign matters that stick on the heat pipe inwall substantially.For example, in a kind of method of clean internal cavity 268, heat pipe must be to be heated to 250 ℃ under 40 (40) the atmospheric situations in internal pressure.When room temperature, internal cavities 268 is complete pressure (perfect pressure); Promptly in cavity 268, will there be molecule.
Fig. 8 and 9 has represented the heat pattern of work embodiment illustrated in fig. 7.Each circle of heating unit 213 is by direct heat fixing roll 212 of heat conduction or heat pipe 262, and shown in arrow K, the cavity that the while indirect heating is represented by the gap A between the adjacent turn of heating unit 213 is shown in arrow L.According to each radial position of enclosing of heating unit 213, these circles are also by radiation heat indirect heating working fluid 214 or fixing roller 212, shown in arrow M.With two temperature T that adjacent turn radially aligned place obtains of heating unit 213
1, T
3Essentially identical heating-up time and temperature distribution history are arranged, as Fig. 9 two transition time t
1With t transition time
2Shown in.At whole transient temperature rising time t
1, the temperature T that records in the gap A between two adjacent turns of heating unit 213
2At first along temperature T
1, T
3, but with regard to lagging behind these temperature lower measured temperature is arranged subsequently.Subsequently, at quiet hour t
2The time, all three temperature are all basic identical.
With reference to figures 10 to 13, center section or packing ring 213 ' can insert between heat pipe 262 and the fixing roller 212 and among the gap A between the adjacent spiral of resistance heated unit 213, so that heat is passed to fixing roller 212 from heating unit 213 and heat pipe 262.Preferably, the height t of packing ring 213 '
1Equal the height t of heating unit 213
2, perhaps higher, so that the height t of formation and 213 '
1Height t with heating unit 213
2Between the equally big space E of difference.Space E has air, like this, gives fixing roller 212 as radiation heat by transfer of air by the heat that heating unit 213 produces.
By transmitting heat to fixing roller 212 among the gap A that packs into packing ring 213 ' and from heater coil and heat pipe 262, compare with the design proposal of only utilizing heater coil to carry out the heat transmission, design proposal shown in Figure 10,11 and 12 can increase considerably temperature conductivity, and the temperature of whole fixing roller 212 can be increased to target temperature equably.Therefore, preferably with material, the especially material of the 10th group (group 10) with fabulous temperature conductivity for example aluminium make packing ring 213 '.
262 one-tenth straight cylinder tube shapes of heat pipe, and in its two ends gas-tight seal.The working fluid 214 of scheduled volume is housed in the internal cavities 268 of heat pipe 262.Preferably, provide netted cored structure 244 in the inside of heat pipe 262, like this, the heat that heating unit 213 sends can evenly be delivered to the whole inside of heat pipe 262 in very short time.Obviously, in order evenly to transmit heat, can carry out multiple variation to whole heat pipe 262.
Working fluid 214 is owing to the heat that heating unit 213 produces and transmits evaporates, and with heat transferred fixing roller 212, therefore, this working fluid 214 plays the effect of the thermal medium that prevents the surface temperature marked change of fixing roller 212 on whole axial length, and heats whole fixing roller 212 in the very short time.In order to realize this effect, working fluid 214 is 5-50% with respect to the volume ratio of internal cavities 268, preferred 5-15%.When the volume ratio of working fluid 214 is no more than approximately 5% the time, the possibility that parches is very high.Therefore, preferably do not adopt the volume of working fluid 214 to be not more than the design proposal of the internal capacity 5% of cavity 268.
Working fluid 214 is selected according to the material of heat pipe 262.In other words, when heat pipe 262 is made by stainless steel, preferred water not, promptly distilled water is as working fluid 214.Except distilled water, great majority known working fluid at present can use.Most preferably use the FC-40 of 3M company production.
Figure 12 and 13 has represented the heat pattern of work embodiment illustrated in fig. 10.Shown in arrow K, the adjacent turn of heating unit 213 can conduct and heat fixing roll 212 or heat pipe 262 and working fluid 214 by direct heat according to its radial arrangement.Adjacent turn also can directly heat packing ring 213 ', shown in arrow L because their next-door neighbours insert packing ring 213 '.Packing ring 213 ' is also by the direct heat fixing roll 212 of heat conduction.These circles of heating unit 213 are gone back indirect heating fixing roller 212 and working fluid 214, shown in arrow M again according to their radial arrangement.All identical in measured temperature T, the T of Te Fulong (Teflon) coating 211 surfaces of the fixing roller 212 that aligns with a circle and the packing ring 213 ' between two adjacent turns at heating unit 213 of heating unit 213 respectively is between transient state and steady state period, as shown in figure 13.Therefore, packing ring makes basic identical, and makes the external temperature of fixing roller all even along its whole axial length really.The diameter that should be known in each circle of heating unit 213 can be approximately equal to, but most cases is the radial section size value that is slightly less than inner packing ring 213 '.
Packing ring 213 ' can be that the aluminium of 10 (type 10) is made by model, and fixing roller 212 is that 60 aluminium is made by model.But, model is that 10 aluminium is easier to distortion, so packing ring 213 is more soft.If heat pipe 262 is made by copper or aluminium, when expanding by pressure-air, the cylindrical shell of heat pipe 262 will be out of shape, packing ring 213 ' also will be deformed into like this, and promptly sequence number is that inner radial surface and the outside surface of 10 (series 10) aluminium packing ring are that the internal diameter direct physical of the fixing roller 212 of 60 aluminium contacts and thermo-contact with the external diameter of heat pipe 262 and model simultaneously; But, model is that the fixing roller of 60 aluminium is with indeformable.Model is that the hardness of 50 aluminium is 60 aluminium greater than model, model be 50 and model be that the hardness of 60 aluminium is the hardness of 10 aluminium greater than model.Model is 50, model be 60 and model be that the heat transfer characteristic of 10 aluminium is basic identical, model is 50, model be 60 and model be that the conductivity of 10 aluminium is also basic identical.
A kind of fixing roller device with second example structure as in the previous paragraph can be made as follows:
(a) prepare the material of a metal catheter as fixing roller;
(b) prepare a metal tube as the heat pipe member;
(c) pass through to wash metal catheter and metal tube, thereby clean the exposed surface of this metal catheter and metal tube with distilled water or volatile liquid;
(d) by clean the exposed surface of spiral resistance heating coil with distilled water or volatile liquid washing spiral resistance heating coil;
(e) can selectively insert the core that forms cylindricality, so that the inside cylindrical surface of alignment heat pipe;
(f) the spiral resistance heating coil is wound in external diameter equals or less times greater than the solenoid of metal catheter internal diameter, and be wrapped on the circular outer cylindrical body of heat pipe, and with continuous Heat Conduction Material (for example model is 10 aluminium) packing ring with each circle of spiral heating coil separately, between the outer cylindrical surface of this spiral resistance heating coil heat transfer heat pipe and the inside cylindrical surface of fixing roller;
(g) with the opposite end of end caps heat pipe, like this, also be left the working fluid import, the two ends of while around the resistance heating coil that the heat pipe spiral twines go between as electrical lead;
(h) heat pipe that will support the heater coil of spiral winding inserts in the metal catheter coaxially;
(i) by high-pressure inert gas the heat pipe of sealing is expanded, thereby the cylindrical shell of heat pipe is radially expanded, directly contact and thermo-contact with the inside cylindrical surface of fixing roller and the outer cylindrical surface physics of heat pipe up to each circle while of packing ring;
(j),, thereby in this internal capacity, produce vacuum in the internal capacity of pipe so that gas is discharged by exhaust, heating and cooling heat pipe and the gas that will have nothing to do is removed in the internal capacity of heat pipe;
(k) pass through the 5-50% volume is injected in the working fluid import in the internal cavities of heat pipe working fluid;
(1) the working fluid import of heat pipe sealed;
(m) surface of usefulness Te Fulong (Teflon) spray metal conduit, and dry and this metal catheter of polishing are so that form protective finish on fixing roller;
(n) will insert an end of fixing roller as the non-conductive lining of bearing; And
(o) metal, heat resistant plastice or epoxy resin cap body that make, that gear is housed is installed in an end of fixing roll assembly.
In order to understand the work of fixing roller device of the present invention easily, will introduce heat pipe of the present invention below.The term heat pipe is meant such heat transfer unit (HTU), this heat transfer unit (HTU) utilize working fluid from its liquid phase to its gas phase the required latent heat of thing phase change and transmit from the heat of high heat density state when the low-heat density state changes.Because heat pipe utilizes the thing phase change characteristic of working fluid, so its coefficient of heat conductivity is higher than known metal arbitrarily.Coefficient of heat conductivity during at room temperature work of heat pipe is the hundred times of the coefficient of heat conductivity of silver or copper, and the coefficient of heat conductivity k of copper is 400W/mk.
Figure 14 is the curve map of expression as the working fluid thing phase change of temperature rising and the function of heat pipe working time.The effective thermal conductivity of table 1 expression heat pipe and other heat-transfer matcrial.
Table 1
| Material | Effective thermal conductivity (W/mk) |
| Heat pipe | 50000-200000 |
| Aluminium | 180 |
| | 400 |
| Diamond | 2000 |
It is 4.18KJ that the temperature of the water of 1kg is elevated to 26 ℃ of required energy from 25 ℃.When the thing of water under the situation that is not having temperature variation when liquid changes steam into, need the 2442KJ energy.Heat pipe transmits about 584 times bigger latent heat by the thing phase change of liquid-steam.For the heat pipe of at room temperature working, known fabulous heat conductor silver of thermal conductivity ratio or the high hundred times of copper.Be 10 as the coefficient of heat conductivity of the heat pipe of working fluid at high temperature with liquid metals
8W/mk.
Figure 15 has represented a kind of inner structure of heat pipe, and this heat pipe includes core, so that capillary structure is provided in heat pipe, its heat transfer is to carry out according to the thing phase change of liquid-steam and steam-liquid.Resistance heating coil (not independent expression the in Figure 15) and core are arranged to cylindricality, and direct respectively cylindrical outer surface and direct cylindrical internal surface installation against heat pipe against heat pipe.Table 2 has been represented the heat resistant material recommended He do not recommend for various working fluids.
Table 2
| Working fluid | Recommend | Do not recommend |
| Ammonia | Aluminium, carbon steel, stainless steel, tweezer | Copper |
| Acetone | Aluminium, copper, stainless steel, silica | |
| Methyl alcohol | Copper, stainless steel, tweezer, silica | Aluminium |
| Water | Copper, 347 stainless steels | Aluminium, stainless steel, tweezer, carbon steel, inconel, silica |
| The potpourri of biphenyl and phenylate | Copper, silica, stainless steel |
Table 3 expression is for the various suitable working fluid of different operating temperature range.
Table 3
| Extremely low temperature (273～120 ℃) | Low temperature (120～470 ℃) | High temperature (450～-2700 ℃) |
| Helium | Water | Caesium |
| Argon | Ethanol | Sodium |
| Nitrogen | Methyl alcohol, acetone, ammonia, freon | Lithium |
We find, when selecting working fluid, to consider several aspect: 1) compatible with used heat resistant material; 2) working fluid is suitable for the working temperature in the heat pipe; And 3) coefficient of heat conductivity of working fluid.
When the fixing roller of heat pipe type by stainless steel (SUS) or copper (Cu) when making, suitable working fluid is according to limit compatible with working temperature with heat resistant material.Saturation pressure was an atmospheric pressure or littler when FC-40 was 165 ℃ in working temperature, can think suitable relatively material.
Known FC-40 is nontoxic, not flammable and compatible with most of materials.And FC-40 also can the loss ozonosphere.Therefore, according to the thermodynamic principles as the FC-40 of working fluid, the relation between saturation temperature and the pressure is represented by formula (1):
Wherein, A=8.2594, B=2310, temperature T is degree centigrade.
The curve map that saturation pressure changed with respect to saturation temperature when Figure 16 had represented FC-40 and water as working fluid.Table 4 has been represented the saturation pressure under the specific saturation temperature of FC-40 in Figure 14.
Table 4
| Saturation temperature (℃) | Saturation pressure (bar) |
| 100 | 0.15 |
| 150 | 0.84 |
| 200 | 3.2 |
| 250 | 9.3 |
| 300 | 22.54 |
| 350 | 47.5 |
| 400 | 89.5 |
| 450 | 154.6 |
For the heat pipe trouble free service, the suitable material of heat pipe and the thickness of end cap are determined according to the pressure vessel safety measurement standard of American Society of Mechanical Engineers (AMSE) (being ASME).For example, when the thickness of column-type heat tube be its diameter 10% in the time, act on the maximum stress (σ on the wall
Max (1)) and the semisphere end cap of heat pipe on maximum stress (σ
Max (2)) be expressed as:
Wherein,
Be the pressure differential between inside heat pipe and the outside, d
0Be the external diameter of heat pipe, t
1Be the thickness of heat pipe, t
2Be the thickness of end cap.
According to the regulation of ASME, the maximum allowable stress under arbitrary temp equals 0.25 times of greatest limit tensile strength under this temperature.When the working fluid vapor pressure of heat pipe in operating temperature range equals the saturated vapor pressure of working fluid, pressure differential
Equal the difference between vapour pressure and the atmospheric pressure.
Figure 17 is the fixing roller for three kinds of different structures being made by the heat pipe of aluminium (Al), copper (Cu) and 304 stainless steels (SS304), the curve map that the ultimate tensile strength (UTS) of different heat resistant materials changes as the function of temperature variation, selected temperature range is between about 0 ℃ to 500 ℃.Figure 18 A is expression as FC-40 during as the working fluid of the heat pipe that is made of aluminium, copper and 304 stainless steels, acts on the maximum allowable stress on the heat pipe wall and maximum stress changes and the curve map of the relation of temperature variation.Figure 18 B be expression when temperature in about 0 ℃ to 300 ℃ scope and distilled water during as the working fluid of the heat pipe that constitutes by aluminium, copper and 304 stainless steels, act on that maximum stress on the heat pipe wall changes and the curve map of the relation of temperature variation.Shown in Figure 18 A, the maximum allowable stress of stainless steel (SS304) is much higher than the maximum allowable stress of copper or aluminium.For the heat pipe and the end cap that constitute by stainless steel (SS304), carry out trouble free service under the situation that when about 400 ℃ working temperature, can also guarantee do not having fluid operating to leak.
Figure 19 A and 19B be expression ought be respectively with FC-10 and distilled water as working fluid, and temperature range acts on the variation of the maximum stress on the copper heat pipe and the curve map of the relation of tube thickness variation from surpassing 150 ℃ to less than 500 ℃ the time.Shown in Figure 19 A and 19B, although the thickness of heat pipe is from 0.8mm to 1.5mm when using FC-10 as working fluid, and with distilled water during as working fluid the thickness of heat pipe from 1.0mm to 1.8mm, greater than about 165 ℃ but under less than 200 ℃ working temperature, the maximum stress that acts on the heat pipe does not have great changes.
Figure 20 and 21 is first embodiment for above-mentioned fixing roller device, the curve map of the relation of temperature variation of measuring at fixing roller middle part (scope is between 0 ℃ and 400 ℃) and time (between 0 and 65 second during in).This fixing roller device has the fixing roller that is made of copper, and the distilled water as working fluid is housed.The thickness of fixing roller is 1.0mm, and external diameter is 17.85mm, and length is 258mm.This test is to be that the resistance of 47rpm, spiral resistance heating coil is that 32 Ω, voltage are to carry out under 200V and the instantaneous maximum power consumption situation that is about 1.5kW at the fixing roller rotating speed.The spiral resistance heating coil directly contacts with the inside cylindrical surface of fixing roller.
Figure 20 has represented to be equipped with the measured value as the fixing roller device of the distilled water of working fluid, and this distilled water has occupied 10% of fixing roller internal capacity.Figure 21 has represented to be equipped with the measured value of the fixing roller device of distilled water, and this distilled water has occupied 30% of fixing roller volume.With reference to Figure 20, this sample used about 8 to 12 seconds to make the temperature of fixing roller be increased to about 175 ℃ working temperature from about 22 ℃ room temperature, and reached 200 ℃ in 14 seconds.With reference to Figure 21, it has used about temperature of fixing roller that made in 13 seconds to be increased to about 175 ℃ from about 22 ℃ room temperature, and only uses about 22 seconds just to reach 200 ℃.
The result who compares Figure 20 and 21, obviously, the speed that temperature raises changes with the volume ratio of the working fluid in the sealed inside that is contained in fixing roller.According to the result of the test of being carried out under different condition, fixing roller can be to occupy under the situation of 5-50% of fixing roller inner space to work in the amount of working fluid.When in the fixing roller volume that has only 5-15% working fluid being housed, the speed that temperature raises is very high.
Compare with common imaging device, aspect temperature rising speed,, need when waiting status, also not continue to power to fixing roller for a kind of imaging device in the possible design proposal that has adopted several fixing roller devices of the present invention.Although will power when becoming image formation state, the fixing roller device that constitutes according to the present invention can form image at a high speed, promptly can also make toner image, and faster than present device.
When the volume of working fluid during greater than 50% volume, the speed that temperature raises will become very slow and impracticable.Simultaneously, when the volume of working fluid during less than 5% volume, parch phenomenon and will occur maybe will becoming and occur probably, because the undersupply of working fluid, therefore, fixing roller can not play the effect of heat pipe well or can not play the effect of heat pipe at all.
In the fixing roller device that constitutes according to the principle of the invention, the voltage of power supply is the 90-240 volt, and frequency is 50-70Hz, perhaps is higher frequency.
As mentioned above, the fixing roller device that constitutes according to the present invention comprises heater coil and working fluid, this heater coil and working fluid are in having the fixing metal roller body of fabulous temperature conductivity, therefore, the surface energy of fixing roller is instantaneous to be heated to the target fixing temperature, so that photographic fixing is transferred to the toner image on the printing paper.With common Halogen lamp LED type or utilize the fixing roller device of the direct surface heating type of palladium (Pd), ruthenium (Ru) or the basic well heater of carbon (C) to compare, fixing roller of the present invention can reach the target fixing temperature in very short time, power consumption simultaneously reduces, and the surface temperature of fixing roller can keep even.Fixing roller device of the present invention does not need hot machine and stand-by period, and therefore, for any imaging device that is equipped with fixing roller device of the present invention, for example printing machine, duplicating machine or facsimile recorder do not need to the fixing roller power supply to prepare printing.Like this, the total power consumption of imaging device reduces.In addition, fixing roller device of the present invention is based on the principle of heat pipe, therefore, along fixing roller longitudinally Temperature Distribution can evenly control, thereby the photographic fixing characteristic of optimization and improvement toner.
In addition, fixing roller device of the present invention can big at an easy rate discharge capacity manufacturing, and can guarantee trouble free service.The parts compatibility that can buy on this fixing roller device feature and other market.The quality of this fixing roller device can be controlled at an easy rate.Fixing roller device of the present invention can be used in high-speed printer.
The method of fixing roller device of the present invention and manufacturing fixing roller device has following advantage.
At first, the fixing roller device can be by simple automated process manufacturing.
The second, along heat pipe temperature variation very little (in ± 1 ° of scope) axially or longitudinally.
The 3rd, this fixing roller device can be used for high-speed printer at an easy rate.
The 4th, can form independent unit as the thermal source and the heat pipe of the main element of fixing roller device, like this, this fixing roller device can big easily discharge capacity manufacturing, and can guarantee trouble free service.The parts compatibility that can buy on this fixing roller device feature and other market.The quality of this fixing roller device can be controlled at an easy rate.
The 5th, owing to be loaded on the continuous evaporation and the condensation cycle of the working fluid in the heat pipe sealed, although at high temperature the pressure of inside heat pipe increases (for FC40, being an atmospheric pressure or littler) in the time of 165 ℃, the danger of blast or gross distortion is very little.
Although represent especially and the present invention be described by the preferred embodiments of the present invention, but those skilled in the art should know, can carry out multiple variation to its form and details under the situation that does not break away from the spirit and scope of the present invention, the spirit and scope of the present invention are determined by additional claim.
Claims (20)
1. fixing roll assembly comprises:
One outer roller for tubular, has internal cavities;
Roller in one inserts in the described outer roller; And
One resistance-type heating solenoid, this solenoid is twined around roller outside surface in described, and be electrically connected with a power supply, the interior roller that is somebody's turn to do that wherein has the described solenoid of twining around roller outside surface in described inserts in the described outer roller, one high pressure puts on the inboard of described interior roller, so that interior roller is expanded to described outer roller, make described resistance-type heating solenoid closely and contact the outside surface of interior roller and the inside surface of outer roller simultaneously.
2. fixing roll assembly according to claim 1, wherein: roller is made by a kind of material that obvious distortion has thermal conductivity simultaneously under pressure in described.
3. fixing roll assembly according to claim 1, wherein: when described high pressure put on described in during roller, the outside surface of roller and the inside surface of outer roller in described resistance-type heating solenoid contacts simultaneously.
4. fixing roll assembly according to claim 1, wherein: the external diameter of roller is less than the internal diameter of described outer roller in described, roller is positioned at described outer roller in described, and is and concentric with described outer roller, and described resistance-type heating solenoid is between the inside surface of the outside surface of interior roller and outer roller.
5. fixing roll assembly according to claim 4, wherein, the liner of heat conduction is filled in the gap between the described resistance-type heating solenoid adjacent turn, the outside surface of roller and the inside surface of outer roller in described chill bar physics contact is described.
6. method of making fixing roll assembly may further comprise the steps:
Formation has the tubular outer roller of internal cavities;
Formation one is used for inserting the interior roller of described outer roller;
The resistance-type heater coil is spirally wound on the outside surface of described interior roller;
With the resistance-type heater coil is spirally wound on described in described on the outside surface of roller roller insert described outer roller;
With a high pressure put on described in the inboard of roller, so that interior roller is expanded to described outer roller, make described resistance-type heating solenoid closely with the outside surface that contacts interior roller simultaneously and the inside surface of outer roller.
7. method according to claim 6 wherein, also comprises: after applying the step of high pressure, roller in described is found time, to form vacuum in the roller in described.
8. method according to claim 7 wherein, also comprises: described vacuumize step after, with a working fluid inject described in roller, with partially filled described in roller.
9. method according to claim 6, wherein: also be included in described applying after the step of high pressure, a working fluid is injected described interior roller, with partially filled described interior roller.
10. method according to claim 6 wherein, also comprises: before described winding step, fill liner between the inside surface of the outside surface of roller and outer roller in described, described liner is filled the gap between the described resistance-type heating solenoid adjacent turn.
11. method according to claim 8 wherein, also comprises: fill liner between the inside surface of the outside surface of roller and outer roller in described, described liner is filled the gap between the described resistance-type heating solenoid adjacent turn.
12. method according to claim 6, wherein, also comprise: before the described filling step and among, the termination of described resistance-type heating solenoid is drawn back, make described resistance-type heating solenoid press the outside surface of described interior roller securely, the described interior roller that has described resistance-type heating solenoid can match with the inboard of described outer roller.
13. method according to claim 8, wherein, also comprise: before the described filling step and among, the termination of described resistance-type heating solenoid is drawn back, make described resistance-type heating solenoid press the outside surface of described interior roller securely, the described interior roller that has described resistance-type heating solenoid can match with the inboard of described outer roller.
14. a fixing roll assembly comprises:
The hollow outer roller of one cylindricality, this outer roller has inside surface and outside surface;
The interior pipe of one cylindricality is positioned at described outer roller, described in pipe concentric with described outer roller, described in the material that is out of shape when in described, managing stuffing pressure gas of pipe make;
One resistance-type heating solenoid, between the inside surface of the outside surface of pipe and described outer roller, the two ends of described solenoid are connected with a power supply in described.
15. fixing roll assembly according to claim 14, wherein: tube portion is filled a working fluid in described.
16. fixing roll assembly according to claim 14, wherein: described resistance-type heating solenoid adjacent turn is spaced apart each other.
17. fixing roll assembly according to claim 16 wherein, is filled gasket material between the outside surface of described interior pipe and the inside surface of outer roller, this gasket material is filled the gap between the described resistance-type heating solenoid adjacent turn.
18. fixing roll assembly according to claim 17, wherein: described gasket material and described interior pipe are made by the material of thermal conductivity.
19. fixing roll assembly according to claim 14, wherein: the outside surface of described outer roller scribbles the Teflon material.
20. fixing roll assembly according to claim 17, wherein: pipe is evacuated in described, and by a partially filled working fluid.
Applications Claiming Priority (10)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US25711800P | 2000-12-22 | 2000-12-22 | |
| US60/257,118 | 2000-12-22 | ||
| KR13451/2001 | 2001-03-15 | ||
| KR13451/01 | 2001-03-15 | ||
| KR10-2001-0013451A KR100400003B1 (en) | 2000-12-22 | 2001-03-15 | Fusing roller apparatus of electrophotographic image forming apparatus |
| KR10-2001-0024378A KR100374618B1 (en) | 2001-05-04 | 2001-05-04 | Fusing roller apparatus of electrophotographic image forming apparatus |
| KR24378/2001 | 2001-05-04 | ||
| KR24378/01 | 2001-05-04 | ||
| US09/947,657 | 2001-09-07 | ||
| US09/947,657 US6571080B2 (en) | 2000-12-22 | 2001-09-07 | Fusing roller assembly having working fluid and heater coil for quick heating and low power consumption for an electrophotographic image forming apparatus and method of making the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1360232A CN1360232A (en) | 2002-07-24 |
| CN1170210C true CN1170210C (en) | 2004-10-06 |
Family
ID=36500528
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB011431660A Expired - Fee Related CN1170210C (en) | 2000-12-22 | 2001-12-11 | Fixing roll assembly of electronic photography image-forming device |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP1217466B1 (en) |
| JP (1) | JP3648479B2 (en) |
| CN (1) | CN1170210C (en) |
| DE (2) | DE60119594T2 (en) |
| TW (1) | TWI235894B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100403595B1 (en) | 2001-08-25 | 2003-10-30 | 삼성전자주식회사 | Fusing device of electrophotographic image forming apparatus |
| KR100485811B1 (en) * | 2002-07-25 | 2005-04-28 | 삼성전자주식회사 | Image fixing device of image forming apparatus |
| KR100503065B1 (en) * | 2002-08-29 | 2005-07-21 | 삼성전자주식회사 | Fusing device of electrophotographic image forming apparatus |
| KR100477678B1 (en) | 2002-11-11 | 2005-03-21 | 삼성전자주식회사 | Fusing roller apparatus of electrophotographic image forming apparatus |
| CN102650845B (en) * | 2011-02-28 | 2014-08-13 | 株式会社理光 | Image fixing device |
| CN102509917B (en) * | 2011-10-24 | 2013-10-30 | 袁芳革 | Thermal expansion self-locking type power connection device |
| CN106842870B (en) * | 2017-03-09 | 2020-03-24 | 上海富士施乐有限公司 | Image forming apparatus and fixing temperature control method |
| KR102218420B1 (en) * | 2019-07-16 | 2021-02-19 | 주식회사 포스코 | Heat pipe roll based forged roll, and its manufacturing mehtod |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02308291A (en) * | 1989-05-24 | 1990-12-21 | Onoda Cement Co Ltd | Heat fixing roll for copying machine and its manufacture |
| JPH09197863A (en) * | 1996-01-12 | 1997-07-31 | Minolta Co Ltd | Fixing device |
| TW445398B (en) * | 1996-12-02 | 2001-07-11 | Aetas Technology Corp | Thermal roller of fuser |
| WO1998031194A1 (en) * | 1997-01-13 | 1998-07-16 | American Roller Company | Heated roller with integral heat pipe |
-
2001
- 2001-11-02 TW TW90127243A patent/TWI235894B/en not_active IP Right Cessation
- 2001-12-11 CN CNB011431660A patent/CN1170210C/en not_active Expired - Fee Related
- 2001-12-19 JP JP2001385728A patent/JP3648479B2/en not_active Expired - Fee Related
- 2001-12-19 DE DE2001619594 patent/DE60119594T2/en not_active Expired - Lifetime
- 2001-12-19 DE DE2001611007 patent/DE60111007T2/en not_active Expired - Lifetime
- 2001-12-19 EP EP20010310591 patent/EP1217466B1/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| DE60119594D1 (en) | 2006-06-14 |
| JP3648479B2 (en) | 2005-05-18 |
| TWI235894B (en) | 2005-07-11 |
| DE60111007T2 (en) | 2005-10-27 |
| JP2002251101A (en) | 2002-09-06 |
| CN1360232A (en) | 2002-07-24 |
| DE60111007D1 (en) | 2005-06-30 |
| DE60119594T2 (en) | 2007-05-10 |
| EP1217466A1 (en) | 2002-06-26 |
| EP1217466B1 (en) | 2005-05-25 |
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