CN203965803U - Fixing device and image processing system - Google Patents
Fixing device and image processing system Download PDFInfo
- Publication number
- CN203965803U CN203965803U CN201420291744.9U CN201420291744U CN203965803U CN 203965803 U CN203965803 U CN 203965803U CN 201420291744 U CN201420291744 U CN 201420291744U CN 203965803 U CN203965803 U CN 203965803U
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- heat
- fixing band
- fixing device
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- conduction part
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Abstract
The utility model relates to fixing device and image processing system.This fixing device comprises: fixing band, carries out heat fixer to the recording materials on recording medium; Heater block, heats described fixing band; Pressure-producing part is relative with the periphery of described fixing band; Clamping forms parts, be positioned at described fixing band inner side and relative with described pressure-producing part, and described clamping formation parts comprise the contact site for directly contacting with described fixing band and the heat-conduction part arranging on the length direction of described clamping formation parts directly not contacting with described fixing band.According to fixing device of the present utility model and image processing system, not only can prevent that the temperature of fixing band is uneven, and can reduce the control temperature of pars intermedia, thereby can reduce total electric weight, realize energy-conservation.
Description
Technical field
The utility model relates to fixing device and image processing system, more particularly, relates to and comprises and make the fixing device of 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 by clamping part, heat and melt image formation layer and be fixed on recording medium 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 reduced required electric weight, still, when recording chart is carried out to photographic fixing, the paper of fixing member rises by the temperature outside region, causes the temperature difference in fixing member to become large.
For this reason, proposed to arrange load coil and the equal thermal part of cutting apart.And, in order to reduce non-paper by the temperature in region, adopted by fan, undertaken cooling, the technology that temporarily stops or postponing photographic fixing action.
But, while adopting above-mentioned technology, not only raising the cost, but also occurred that the production efficiency being caused by antiquarian difference declines, the clamping part region that is fixing band in photographic fixing portion occurs that non-paper is by near the problems such as non-uniform temperature region.
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, heats described fixing band; Pressure-producing part is relative with the periphery of described fixing band; Clamping forms parts, be positioned at described fixing band inner side and relative with described pressure-producing part, and described clamping formation parts comprise the contact site for directly contacting with described fixing band and the heat-conduction part arranging on the length direction of described clamping formation parts directly not contacting with described fixing band.
According to above-mentioned fixing device, preferred described heat-conduction part is arranged on the inside that described clamping forms parts, and described contact site is in the periphery of described heat-conduction part.
According to above-mentioned fixing device, preferred described heat-conduction part is that thermal conductivity is higher than the parts of described fixing band.
According to above-mentioned fixing device, preferred described heat-conduction part comprises heat pipe.
According to above-mentioned fixing device, preferred described heat pipe comprises many heat pipes that are set up in parallel.
According to above-mentioned fixing device, preferably described many heat pipes link together by metal bond.
According to above-mentioned fixing device, the top layer of described fixing band one side of preferred described heat-conduction part is provided with concavo-convex.
According to above-mentioned fixing device, preferred described heat-conduction part is the parts that consist of aluminium, stainless steel, copper or iron.
According to above-mentioned fixing device, preferred described heater block comprises that the induction current in the outside that is arranged on described fixing band produces coil and described induction current produces the magnetic core in 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, by the heat by region is transferred to intermediate heat capacity portion by non-paper, thereby can realize evenly heating and keep heat, the temperature of avoiding paper to pass through region declines.And, the control temperature of pars intermedia can be reduced, thereby total electric weight can be reduced, realize energy-conservation.
Accompanying drawing explanation
Fig. 1 shows according to the sectional view of fixing device of the present utility model example.
Fig. 2 illustrates the surperficial enlarged diagram of pressure pad.
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, by pressure-producing part, press fixing band and clamping formation parts, 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 recording medium that parts the prevent fixing band temperature by position and declines, and even continuously by the narrower recording medium of width, end region temperature can not rise yet.
The inside that forms parts in this clamping has heat-conduction part, and this heat-conduction part can carry the non-paper that is transferred to clamping formation parts from fixing band by the heat in region.
The outer perisphere that clamping forms parts is resin bed, and inside can have heat-conduction part, and heat-conduction part can be the high-level efficiency heat transfer components such as the sheet metals such as aluminium, iron, copper or heat pipe.
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 the clamping part heat by position.
When 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, illustrated according to the sectional view of fixing device of the present utility model example.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 50.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, by pressing spring, can be arranged on the two ends of the rotary shaft of backer roll 30, 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.
40 pairs of fixing bands 10 of heater block heat.Heater block 40 can be included in the heater coil (not shown) in the outside of fixing band 10.The outside of heater coil is provided with FERRITE CORE 41, blocks the magnetic flux of heater coil, improves magnetic density.Heater block 40 can also comprise auxiliary heating parts 42, and auxiliary heating parts 42 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 42, thus induction heating, thus heat fixer band 10.In the heating layer being formed by magnetic metal of auxiliary heating parts 42, by the heater coil outside fixing band, the magnetic metallic objects such as Fe, Ni, Cu, SUS, ferrite are generated heat.But heater block 40 can be also such as heating arrangements such as heating lamps.
Clamping forms the inner side that parts 20 are located at fixing band 10, relative with backer roll 30.By the backer roll 30 as pressure-producing part, fixing band 10 is formed when parts 20 are pressed and rotated to clamping, 10 pairs of recording materials with layer of toner of fixing band heat, thereby toner is fixed on recording materials.Layer of toner directly contacts with fixing band 10.
The periphery that clamping forms parts 20 is resin bed, for example, by heat-resistant resins such as polyetheretherketone (PEEK) material, phenolics, is formed, wider by region than paper.Resin bed directly contacts with fixing band when photographic fixing, and comprises the heat-conduction part 21 directly not contacting with fixing band.The thermal conductivity of heat-conduction part 21 is higher than fixing band 10.The inside that forms parts 20 in clamping, has the metal that heat transfer efficiency is good in the longitudinal direction.In the utility model, heat-conduction part 21 can be aluminium parts, but is not limited to this, can be also stainless steel, iron, can also be copper.And, as high efficiency heat-conduction part 21, can use heat pipe.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 that clamping forms parts.Also cylindric heat pipe can be arranged side by side and formed.The cross sectional shape of heat pipe can arrange as required, for example, can form intermediate rectangular, and two ends are a circular part (such as 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 the end of heat pipe is connected with each other.For example, can with serpentine fashion or alternate manner, connect as required.Heat-conduction part 21 also can form by one-body molded.
When clamping forms parts 20 by the temperature deviation homogenising of the length direction of fixing band 10 superficial layers (direction relative with fixing band sense of rotation), non-paper is carried by region to the paper of pars intermedia by the heat in region.Especially, when photographic fixing paper by width narrower (A4-R, A5, B4 etc.), the temperature as paper by the fixing band 10 of the pars intermedia of the roller length direction in region easily declines.For this reason, the clamping with evenly heating function forms parts 20 the non-paper of fixing band 10 is conducted by heat by the heat in region, and the metal level or the heat pipe that by clamping, are formed the hot delivery section of conduct of parts 20 are transferred to the center section that clamping forms parts 20.And, can carry heat to the temperature decline position of fixing band 10.
The clamping with evenly heating function forms in the structure of parts 20 and has adopted the material with good heat conduction efficiency, therefore, even if it is resin beds that clamping forms the superficial layer of parts 20, inner heat is conducted, hot transfer efficiency is still very high, can realize evenly heating.The price of iron is comparatively cheap, and can when 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, used 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 use it to arrange side by side heat pipe.When paper passes through, when A4-R paper, recording medium paper remains on 150 ℃ by region, then passes through paper.At this moment, paper becomes 120 ℃ by region, and the end region temperature as non-paper by the fixing band in region becomes 215 ℃.
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, the little shortage of heat of thermal capacity because of fixing band 10, need to further heat, non-paper will rise by the temperature at position.And in the utility model, non-paper moves to paper by region by the heat in region by being located at the metal level of clamping formation parts 20 inside, therefore, without heating in addition again.And even in the situation that the whole region of heater block is heated, even if the temperature of the non-paper of end by region rises, the temperature of end can not rise rapidly yet.
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.Compare end and pars intermedia, the temperature of end easily improves, and pars intermedia at least has all the time paper to pass through when 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 heat of the non-paper of end by region is transferred to, 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, when reducing transporting velocity, affect productivity, reduce thus performance.
In addition, temperature sensor 60 detects the temperature of fixing band 10, and testing result is inputted to unshowned control part.According to the testing result of temperature sensor 60, coil is carried out to FEEDBACK CONTROL, and fixing band 10 is remained on to fixing temperature.If fixation unit abnormal heating, thermostat 70 disconnects feed circuit to the power supply of coil.Thermostat 70 and temperature sensor 60 can be arranged on framework 50, can certainly be arranged on as required other positions.
According to fixing device of the present utility model, can be arranged in image processing system, because other structures of image processing system can adopt known any suitable structure, here just not be described in detail.
In embodiment above, describe heat-conduction part 21 and be positioned at the embodiment that clamping forms parts 20 inside.Yet, can be also other configuration modes, clamp formation parts 20 and comprise the contact site for directly contacting with fixing band 10, and the heat-conduction part of the length direction setting at described clamping formation parts directly not contacting with described fixing band.The length direction is here the direction vertical with accompanying drawing paper.For example, clamping forms parts 20 and can be set to comprise and form the contact layer of described contact site and be arranged on the heat-conduction part layer on contact layer, and this contact layer can consist of heat-resistant resins such as above-mentioned polyetheretherketonematerials materials, phenolics.In addition, for example, can also on this heat-conduction part layer, one deck be set again, can use the resin material identical with the formation of contact layer, can be also other resin materials.Heat-conduction part can be bonded on described clamping by the mode such as bonding, one-body molded and form in parts.When described clamping formation parts consist of metal, by metal bond mode, engage set heat pipe.
In addition, as shown in Figure 2, at the superficial layer of fixing band one side of heat-conduction part, can be made as concavo-convex.Preferably compare with the width of the main scanning direction of fixing band, the concavo-convex spreading width of the main scanning direction of the metal level of superficial layer is larger.
By the utility model, the structure without change fuser can suppress the non-paper of annular element by the end region temperature in region in the situation that not raising the cost.And, when suppressing end region temperature, by heat pipe, carry hot effect, 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 described various forms or the improvement falling 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, heats described fixing band;
Pressure-producing part is relative with the periphery of described fixing band;
Clamping forms parts, be positioned at described fixing band inner side and relative with described pressure-producing part, and described clamping formation parts comprise the contact site for directly contacting with described fixing band and the heat-conduction part arranging on the length direction of described clamping formation parts directly not contacting with described fixing band.
2. fixing device according to claim 1, is characterized in that, described heat-conduction part is arranged on the inside that described clamping forms parts, and described contact site is in the periphery of described heat-conduction part.
3. fixing device according to claim 1, is characterized in that, described heat-conduction part is that thermal conductivity is higher than the parts of described fixing band.
4. fixing device according to claim 1, is characterized in that, described heat-conduction part comprises heat pipe.
5. fixing device according to claim 4, is characterized in that, described heat pipe comprises many heat pipes that are set up in parallel.
6. fixing device according to claim 5, is characterized in that, described many heat pipes link together by metal bond.
7. fixing device according to claim 1, is characterized in that, the top layer of described fixing band one side of described heat-conduction part is provided with concavo-convex.
8. fixing device according to claim 1, is characterized in that, described heat-conduction part is the parts that consist of aluminium, stainless steel, copper or iron.
9. fixing device according to claim 1, is characterized in that, described heater block comprises that the induction current in the outside that is arranged on described fixing band produces coil and described induction current produces the magnetic core in 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 |
|---|---|---|---|
| CN201420291744.9U CN203965803U (en) | 2014-06-03 | 2014-06-03 | Fixing device and image processing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420291744.9U CN203965803U (en) | 2014-06-03 | 2014-06-03 | Fixing device and image processing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203965803U true CN203965803U (en) | 2014-11-26 |
Family
ID=51926363
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420291744.9U Expired - Fee Related CN203965803U (en) | 2014-06-03 | 2014-06-03 | Fixing device and image processing system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203965803U (en) |
-
2014
- 2014-06-03 CN CN201420291744.9U patent/CN203965803U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20160603 |