CN203965805U - Fixing device and image processing system - Google Patents
Fixing device and image processing system Download PDFInfo
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- CN203965805U CN203965805U CN201420314174.0U CN201420314174U CN203965805U CN 203965805 U CN203965805 U CN 203965805U CN 201420314174 U CN201420314174 U CN 201420314174U CN 203965805 U CN203965805 U CN 203965805U
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- heat
- fixing band
- fixing device
- conducting layer
- fixing
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Abstract
The utility model relates to fixing device and image processing system.This fixing device is characterised in that, comprising: fixing band, carries out heat fixer to the recording materials on recording medium; Heater block, is arranged on described fixing band outside, and described fixing band is heated; Clamping forms parts, is positioned at described fixing band inner side; Pressure-producing part, in the outside of described fixing band and with described clamping, to form parts relative; And heat-conduction component, be arranged on described fixing band inner side, and be included in the second heat-conducting layer that transmits the first heat-conducting layer of heat on first direction and transmit heat in second direction.According to fixing device of the present utility model and image processing system, can realize the heater block of fixing device simultaneously and recording materials are fixed on to the evenly heating on main scanning direction and sub scanning direction of ring-type rotary part on recording chart, improve hot transfer efficiency.
Description
Technical field
The utility model relates to fixing device and image processing system, more particularly, relates to and comprises the fixing device that makes recording materials heater block of the ring-type rotary part of photographic fixing on recording medium and the image processing system that uses this fixing device.
Background technology
At present, the fixing device of image processing system by pressure-producing part keep, conveying recording medium, thereby heat and melt image formation layer and be fixed on recording medium by clamping part simultaneously.In recent years, for the electric power that reduces heating arrangement is to save the energy, reduced the thermal capacity of heat fixer parts, thereby reduce required electric weight, still, in the time that recording chart is carried out to photographic fixing, the paper of fixing member, by the temperature rise outside region, causes the temperature difference in fixing member to become large.
For this reason, need to form cutting apart of load coil of equal thermal part.And, in order to reduce non-paper by the temperature in region, adopt and undertaken cooling by fan.In addition, along with the reduction of the thermal capacity of heater block, on direction of scanning, also produced the temperature difference, caused image to produce gradation unequal, caused that image is bad, therefore adopted and temporarily stopped or postponing the technology such as photographic fixing operation.
But, while adopting above-mentioned technology, not only raise the cost, but also occurred that the production efficiency being caused by antiquarian difference declines, there is the problems such as non-uniform temperature near by region in the non-paper in the clamping part region of the photographic fixing portion as fixing band.
Utility model content
In view of the above problems, an aspect of the present utility model provides a kind of fixing device, it is characterized in that, comprising: fixing band, carries out heat fixer to the recording materials on recording medium; Heater block, is arranged on described fixing band outside, and described fixing band is heated; Clamping forms parts, is positioned at described fixing band inner side; Pressure-producing part, in the outside of described fixing band and with described clamping, to form parts relative; And heat-conduction component, be arranged on described fixing band inner side, and be included in the second heat-conducting layer that transmits the first heat-conducting layer of heat on first direction and transmit heat in second direction.
In above-mentioned fixing device, preferred described heat-conduction component is arranged on the inside of described clamping formation parts.
In above-mentioned fixing device, preferred described heat-conduction component is arranged on a side contrary with described fixing band of described clamping formation parts.
In above-mentioned fixing device, preferred described first direction is the Width of described fixing band, and described second direction is the transmission direction of described recording medium.
In above-mentioned fixing device, preferred described heat-conduction component is arranged on described fixing band inner side and the position relative with described heater block.
In above-mentioned fixing device, preferred described first direction is the Width of described fixing band, and described second direction is the circumferential direction along described fixing band inner side.
In above-mentioned fixing device, preferably described the first heat-conducting layer is than the more close described fixing band of described the second heat-conducting layer.
In above-mentioned fixing device, preferably described the first heat-conducting layer is included in many heat pipes that are set up in parallel in described second direction, and described the second heat-conducting layer is included in many heat pipes that are set up in parallel on described first direction.
In above-mentioned fixing device, preferred described heater block comprises the magnetic core in induction current generating coil and described induction current generating coil outside.
Of the present utility modelly provide on the other hand a kind of image processing system, this image processing system comprises the fixing device of above-mentioned any one.
According to embodiment of the present utility model, can realize the heater block of fixing device simultaneously and recording materials are fixed on to the evenly heating on main scanning direction and sub scanning direction of ring-type rotary part on recording chart, improve hot transfer efficiency.
Brief description of the drawings
Fig. 1 shows according to the sectional view of fixing device of the present utility model embodiment.
Fig. 2 shows the cross section enlarged diagram of the heat-conduction component of the fixing device shown in Fig. 1.
Fig. 3 shows the upward view of the heat-conduction component of the fixing device shown in Fig. 1.
Fig. 4 shows according to the sectional view of another embodiment of fixing device of the present utility model.
Embodiment
Below, illustrate according to the fixing device of embodiment of the present utility model and the image processing system that comprises this fixing device.
According to the fixing device of embodiment of the present utility model, carry to carry and be formed with the recording materials of image by pressing heater block and pressure fixing parts, simultaneously by the image fixing on recording materials on recording materials, wherein, there is the equal heat structure that makes heater block entirety not occur the temperature difference on main scanning direction and sub scanning direction.
Hot transfer unit is the component parts overlapping in relative direction, thereby hot transfer unit contacts with heater block or the close evenly heating that reaches heater block slidably.
Hot transfer unit is made up of heat pipe, and is made up of aluminium, stainless steel, copper product.
The heat conveying capacity of heat pipe can be different on throughput direction.
Press fixing band and clamping formation parts by pressure-producing part, thereby crimping forms clamping part, keeps and carries recording materials and the recording medium such as toner, recording materials is fixed on recording medium simultaneously.This clamping forms parts and prevents that the recording medium of fixing band is by the temperature decline at position, and even continuously by the narrower recording medium of width, end region temperature also can not rise.
By forming clamping part, face contact, in heating tape, can be eliminated the thermograde of heating tape, increase, thereby non-paper that can mobile heating tape is by the warm in region by pressing the paper that makes in clamping part by the heat at position.
In the time not carrying out photographic fixing action, clamping formation parts and heater block, in non-pressurised state, are not supplied with heat.
Below, accompanying drawings embodiment of the present utility model.
In Fig. 1, illustrate according to the sectional view of fixing device of the present utility model embodiment.Fixing device comprises that fixing band 10, clamping part form parts 20, backer roll 30, heater block 40 etc.
Fixing band 10 is ring-type fixing band, and the recording materials such as toner on recording medium are carried out to photographic fixing.Clamping forms parts 20 can support the inner side that is arranged on fixing band 10 by framework 60.Fixing band 10 forms in clamping the rotation that is pressed between parts 20 and backer roll 30.Backer roll 30, by the pressing force of for example pressing pressing spring (not shown) as pressing mechanism, is pushed to clamping and forms parts 20, thereby forms the clamping part that clamps the recording medium passing through.For example, can be arranged on the two ends of the rotary shaft of backer roll 30 by pressing spring, certainly be not limited to this set-up mode.Except pressing pressing spring, can also utilize such as cam mechanism etc.
Backer roll 30 be configured to fixing band 10 on circumference toward each other.Backer roll 30 can by by pressing of pressing spring with fixing band 10 butts.The parts that the core 31 of backer roll 30 is manufactured for metal, its outside has the elastic layer (not shown) such as silastic-layer or silicon sponge layer, and elastic layer surface also can have the peel ply (not shown) that the materials such as soluble poly tetrafluoroethene (PFA) form.Under the effect of the driving mechanism that backer roll 30 can be formed by unshowned motor and gear etc. itself, rotate, and fixing band 10 is exerted pressure and made its driven rotation.
Heater block 40 heats fixing band 10.Heater block 40 is included in the heater coil (not shown) in the outside of fixing band 10; And be located at the FERRITE CORE 41 in the outside of heater coil, for blocking the magnetic flux of heater coil, improve magnetic density.Fixing device can also comprise auxiliary heating parts 50, and auxiliary heating parts 50 can be configured in the position relative with heater coil with respect to fixing band 10, and it comprises magnetic metal.By applying high-frequency current to heater coil, produce magnetic flux, thereby make to produce induction current in the heating layer of fixing band 10 and the magnetic metal of auxiliary heating parts 50, thus induction heating, thus heat fixer band 10.In the heating layer being formed by magnetic metal of auxiliary heating parts 50, make the magnetic metallic object heatings such as Fe, Ni, Cu, SUS, ferrite by the heater coil in fixing band outside.But heater block 40 can be also the heating arrangements such as such as heating lamp.
Clamping formation parts 20 are located at the inner side of fixing band 10, relative to backer roll 30 to contact with fixing band 10.It can be pressure pad that clamping forms parts.By the backer roll 30 as pressure-producing part, fixing band 10 is formed when parts 20 are pressed and rotated to clamping, the heat of fixing band 10 heats the recording materials that formed image by image forming part and toner, conveying is pressed, carried to recording materials simultaneously, thereby toner is fixed on recording materials.Layer of toner directly contacts with fixing band 10.
Clamping forms parts 20 and is for example formed by the heat-resistant resin such as such as polyetheretherketone (PEEK) material, phenolics, wider by region than paper.Clamping forms parts 20 as the contact site directly contacting with fixing band in the time of photographic fixing.The heat-conduction component 21 directly not contacting with fixing band can be arranged on clamping and form the inner (not shown) of parts 20.
In the present embodiment, heat-conduction component 21 is arranged on clamping formation parts 20.Heat-conduction component 21 can be included in the second heat-conducting layer that transmits the first heat-conducting layer of heat on first direction and transmit heat in second direction.As shown in Figure 2, heat-conduction component 21 can be included in the second heat-conducting layer 212 that transmits the first heat-conducting layer 211 of heat on first direction and transmit heat in the second direction vertical with first direction.Owing to being provided with the heat-conducting layer that transmits in different directions heat, can in different directions, eliminate the temperature difference.
Fig. 3 shows the upward view of the thermal conductor in Fig. 2.The first heat-conducting layer 211 transmits heat on the Width D1 of fixing band 10, and the second heat-conducting layer 212 transmits heat on the transmission direction D2 of paper.Preferably the first heat-conducting layer 211 is compared the more close fixing band 10 of the second heat-conducting layer 212.
The thermal conductivity of heat-conduction component 21 is higher than fixing band 10.In the utility model, as high efficiency heat-conduction component 21, the equal thermosphere that it can be formed by heat pipe, all thermosphere is for example aluminium parts, but is not limited to this, can be also stainless steel, iron, can also be copper.The steel of being made up of the high material of temperature conductivity also can be realized evenly heating effectively, also can more effectively realize evenly heating.As the example of the heat pipe in the utility model, can be by pressing heat pipe, shape, from cylindrical ellipse or oval (Long ball) shape of being squeezed into, is located at the inside of clamping formation parts.Also cylindric heat pipe can be arranged side by side and formed.All thermosphere is by forming stacked heat pipe, for realizing the evenly heating in the evenly heating on the main scanning direction of conveying recording medium and direction corresponding thereto.By form temperature inequality on the length direction (direction vertical with the sense of rotation of fixing band band) of equal thermosphere to fixing band top layer carry out evenly heating, simultaneously can be by non-paper the heat delivery by region to the paper of central portion by the parts in region.Especially,, in the time of photographic fixing paper by width narrower (A4-R, A5, B4 etc.), easily decline by the temperature of the fixing band 10 of the pars intermedia of the roller length direction in region as paper.For this reason, heat-conduction component conducts by the heat in region the non-paper of fixing band 10 by heat, be transferred to the center section of heat-conduction component by the metal level as hot delivery section or heat pipe, and carries heat to the temperature decline position of fixing band 10.
The cross sectional shape of heat pipe can arrange as required, for example, can be formed as intermediate rectangular, and two ends are a circular part (for example semicircle) or an oval-shaped part etc.Preferably heat pipe comprises the many heat pipes that are set up in parallel.These heat pipes can link together by metal bond.For example, can be by connected with each other the end of heat pipe.For example, can connect with serpentine fashion or alternate manner as required.Heat-conduction component 21 also can form by one-body molded.
Having in the structure of heat-conduction component 21 of evenly heating function and adopted the material with good heat conduction efficiency, therefore, is resin beds even if clamping forms parts 20, and inner heat conduction, hot transfer efficiency are still very high, can realize evenly heating.The price of iron is comparatively cheap, and can in keeping intensity, realize slimming, and stainless steel material also can be realized the effect equal with iron, and stainless steel can adopt various known stainless steel materials.Also can use aluminum.The heat transfer efficiency of aluminium, higher than iron and stainless steel, therefore, can be realized better effect.Consider intensity, the thickness of the thin metal plate of iron is preferably more than 2.5mm.In the utility model, in the heat pipe forming at aluminum, use the hole type that internal diameter is φ 1.5, but be not limited to this.
The planar heat pipe of the heat pipe flattening embeds in aluminium sheet, and the structure that embeds heat pipe in aluminium base is the simplest, therefore, can utilize this structure to arrange side by side heat pipe.When paper passes through, in the time of A4-R paper, paper remains on 150 DEG C by region, then passes through paper.At this moment, paper becomes 120 DEG C by region, becomes 215 DEG C as non-paper by the end region temperature of the fixing band in region.
If the recording medium of common thickness is not easy to occur the problems referred to above.But, after preheating finishes, during continuously by the narrower paper of width, at the pars intermedia of heater block, because of the little shortage of heat of thermal capacity of fixing band 10, need to further heat, non-paper will rise by the temperature at position.And in the present embodiment, non-paper moves to paper by region by the heat in region by the metal level of heat-conduction component 21, therefore, without heating in addition again.And, even in the situation that the whole region of heater block is heated, though the non-paper of end by the temperature rise in region, the temperature of end also can not rise rapidly.
In high speed machine etc., during continuously by paper, the temperature of end can rise, and still, inside is provided with in the situation of heat pipe, and the heat that heated end portion produces is transported to roller pars intermedia.This is the remarkable result causing due to heat pipe.Relatively end and pars intermedia, the temperature of end easily improves, and pars intermedia at least has all the time paper to pass through in the time carrying out photographic fixing action, and therefore, temperature is passed through region lower than the non-paper of end.Therefore, when the whole region of length direction is heated to set point of temperature, the temperature of end uprises, the temperature step-down of pars intermedia.Corresponding to temperature contrast at this moment, by heat pipe, the heat of end is transported to pars intermedia.Therefore, even when continuously by the narrower paper of width, the thermal capacity portion in the middle of the non-paper of end is transferred to by the heat in region, thus can not there is the rising of end region temperature.Thus, without cutting apart heating.If recording materials are recording mediums of common thickness, the heat that a piece of paper is captured from metal ring band is less.When by the thicker recording medium of thickness, recording medium from comprise annular element to determine the heat that portion's material captures more, therefore, conventionally adopt the method that reduces transporting velocity.But, in the time reducing transporting velocity, affect productivity, reduce thus performance.
As another embodiment, for form the uniform evenly heating of realization to heater block outside parts 20 in clamping, as the evenly heating in the throughput direction of recording materials and the direction vertical with this direction, can be positioned at a side relative with heater block, induction heating parts and be positioned at the inner circumferential side of film metal with respect to the thin film metal layer of heated fixing band, can contact with thin film metal layer, also can be slidably near thin film metal layer.Easily there is the temperature difference because thermal capacity is less in the thin film metal layer as heater block.Especially, be not only paper by region and non-paper by region, the startup of induction heating and stop also can causing the temperature difference.Because thin film metal layer closely slides with equal thermosphere in heating region and outside heating region, therefore in the time there is the temperature difference, can carry out heat conduction to equal thermosphere in the higher region of temperature, by the effect of the heat pipe that intersects, carry out heat conduction to the direction vertical with throughput direction, realize evenly heating.
Fig. 4 illustrates according to the sectional view of another embodiment of fixing device of the present utility model.This embodiment and difference embodiment illustrated in fig. 1 be, heat-conduction component is not arranged on clamping and forms parts 20 places, and be arranged on the inner side of the fixing band relative with heater coil and FERRITE CORE 10.Heat-conduction component 51 can arrange separately, also can be used as the part setting of auxiliary heating parts 50 '.Except comprising heat-conduction component 51, the formation of auxiliary heating parts 50 ' and auxiliary heating parts 50 are similar.Heat-conduction component 51 can contact with fixing band 10, or can approach slidably with it, thereby not only eliminates the temperature difference that paper causes by region by region and non-paper, and can eliminate the startup of induction heating and the temperature difference that stops causing.Heat-conduction component 51 also can have for example two heat-conducting layers similarly with the heat-conduction component 21 shown in Fig. 2.For example the first heat-conducting layer arrives conduction heat on the Width of fixing band 10, the heat conduction on the circumferential direction along described fixing band inner side of the second heat-conducting layer.Thus, for example, the first heat-conducting layer can be along the multiple heat pipes that are arranged in juxtaposition on the circumferential direction of fixing band 10 inner sides, and the second heat-conducting layer can be the multiple heat pipes that are arranged in juxtaposition on the Width of fixing band 10, and these heat conduction pipes are not wire, but have along the arcuate shape of fixing band 10 inner sides.
Although Fig. 1 and Fig. 4 show different embodiment, both features also can combine.For example, heat-conduction component 21 was both set in fixing device, heat-conduction component 51 had been set again.Thus, obtain the effect of better eliminating the temperature difference on fixing band.
In addition, temperature sensor 70 detects the temperature of fixing band 10, and testing result is inputted to unshowned control part.According to the testing result of temperature sensor 70, coil is carried out to FEEDBACK CONTROL, and fixing band 10 is remained on to fixing temperature.If fixation unit abnormal heating, thermostat 80 disconnects the power supply of feed circuit to coil.Thermostat 80 and temperature sensor 70 can be arranged on framework 60, can certainly be arranged on as required other positions.
Can be arranged in image processing system according to fixing device of the present utility model, because other structures of image processing system can adopt known any suitable structure, here just not be described in detail.
In embodiment above, heat-conduction component can be bonded on described clamping by the mode such as bonding, one-body molded and form in parts.In the time that described clamping formation parts are made up of metal, engage set heat pipe by metal bond mode.
By the utility model, without the structure of change fuser, in the situation that not raising the cost, can suppress the non-paper of annular element by the end region temperature in region.And, when suppressing end region temperature, carry hot effect by heat pipe, can further improve to pars intermedia and transmit hot efficiency.And, owing to can reducing the control temperature of pars intermedia, thereby can reduce total electric weight, realize energy-conservation.
Although described part embodiment, these embodiments only present as an example, are not limited to scope of the present utility model.In fact, new embodiment described herein can show as other various forms; In addition can, in the situation that not departing from spirit of the present utility model, embodiment described herein be carried out various omissions, substitute and be changed.Appending claims and equivalency range thereof comprise the described various forms or the improvement that fall in scope and spirit of the present utility model.
Claims (10)
1. a fixing device, is characterized in that, comprising:
Fixing band, carries out heat fixer to the recording materials on recording medium;
Heater block, is arranged on described fixing band outside, and described fixing band is heated;
Clamping forms parts, is positioned at described fixing band inner side;
Pressure-producing part, in the outside of described fixing band and with described clamping, to form parts relative; And
Heat-conduction component, is arranged on described fixing band inner side, and is included in the second heat-conducting layer that transmits the first heat-conducting layer of heat on first direction and transmit heat in second direction.
2. fixing device according to claim 1, is characterized in that, described heat-conduction component is arranged on the inside of described clamping formation parts.
3. fixing device according to claim 1, is characterized in that, described heat-conduction component is arranged on a side contrary with described fixing band of described clamping formation parts.
4. according to the fixing device described in claim 2 or 3, it is characterized in that, described first direction is the Width of described fixing band, and described second direction is the transmission direction of described recording medium.
5. fixing device according to claim 1, is characterized in that, described heat-conduction component is arranged on described fixing band inner side and the position relative with described heater block.
6. fixing device according to claim 5, is characterized in that, described first direction is the Width of described fixing band, and described second direction is the circumferential direction along described fixing band inner side.
7. fixing device according to claim 1, is characterized in that, described the first heat-conducting layer is than the more close described fixing band of described the second heat-conducting layer.
8. fixing device according to claim 1, is characterized in that, described the first heat-conducting layer is included in many heat pipes that are set up in parallel in described second direction, and described the second heat-conducting layer is included in many heat pipes that are set up in parallel on described first direction.
9. fixing device according to claim 1, is characterized in that, described heater block comprises the magnetic core in induction current generating coil and described induction current generating coil outside.
10. an image processing system, is characterized in that, comprises the fixing device described in any one in claim 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420314174.0U CN203965805U (en) | 2014-06-12 | 2014-06-12 | Fixing device and image processing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420314174.0U CN203965805U (en) | 2014-06-12 | 2014-06-12 | Fixing device and image processing system |
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| Publication Number | Publication Date |
|---|---|
| CN203965805U true CN203965805U (en) | 2014-11-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420314174.0U Expired - Fee Related CN203965805U (en) | 2014-06-12 | 2014-06-12 | Fixing device and image processing system |
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| Country | Link |
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| CN (1) | CN203965805U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109407491A (en) * | 2017-08-18 | 2019-03-01 | 柯尼卡美能达株式会社 | Fixing device and image forming apparatus |
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2014
- 2014-06-12 CN CN201420314174.0U patent/CN203965805U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109407491A (en) * | 2017-08-18 | 2019-03-01 | 柯尼卡美能达株式会社 | Fixing device and image forming apparatus |
| CN109407491B (en) * | 2017-08-18 | 2022-04-15 | 柯尼卡美能达株式会社 | Fixing device and image forming apparatus |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141126 Termination date: 20190612 |