CN1115433A - Image heating apparatus and image heating film - Google Patents
Image heating apparatus and image heating film Download PDFInfo
- Publication number
- CN1115433A CN1115433A CN 94113510 CN94113510A CN1115433A CN 1115433 A CN1115433 A CN 1115433A CN 94113510 CN94113510 CN 94113510 CN 94113510 A CN94113510 A CN 94113510A CN 1115433 A CN1115433 A CN 1115433A
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- mentioned
- film
- particle
- heating apparatus
- image heating
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- Laminated Bodies (AREA)
- Surface Heating Bodies (AREA)
- Resistance Heating (AREA)
Abstract
The invention relates to a thermal imaging device which comprises a heater; a film, a first face of which can contact the heater and a second face thereof can contact recording materials that record unfixed images. The film can move with the record materials and the unfixed images is heated by the thermal energy of the heater through the film; the film comprises a sheet base course which can contact the heater, a split layer which can contact the recording materials and a middle layer between the sheet base course and the split layer, wherein, the sheet base course disperses with heat conducting particles and the middle layer disperses with packing materials.
Description
The present invention relates to the image heating apparatus that duplicating machine, printer or same device use, particularly heat is delivered to equipment and film on the photographic fixing image not by film by well heater.
Up to now, hot-rolling formula firing equipment should be used as fixation (photographic fixing) equipment (image heating apparatus) widely, so that for example using the electrofax imaging, the duplicating machine of technology, electrostatic recording, magnetic recording or technology like that, Printers and Faxes machine etc. are dissolved in the recording materials surface by conduction or direct mode imaging technique with toner image on image output device, and imaging on recording materials.
Hot-rolling formula firing equipment comprises a metallic roll that has well heater, the elasticity pressure roller of a pressure contact, as basic module.These pressure rollers form nip (fixed interval (FI)) between them, can its toner image be added hot pressing and fixing by recording materials (parts or material have to be heated) by this gap.
This hot-rolling formula firing equipment comprises very big thermal capacity, so need to make it to reach fixed temperature to improve the roller surface temperature for a long time.In addition, in order to carry out visual output function without delay at once, roller surface will carry out temperature actuated to keep certain temperature always.
As a kind of method that overcomes these problems, the assignee that disclosed Japanese patent application No. 313182/1988 and No. 157878/nineteen ninety of another disclosed Japanese patent application have transferred the application once proposed a kind of film heating system and equipment.
The firing equipment of this system comprises having the little heat-resistant film of thickness, and one is fixed on the well heater of film one end and by the casting die of heater configuration on film, has this casting die to be heated to touch on the film, and be pushed on the well heater.
Between well heater and casting die, then form a gap for the film that inserts therebetween.Promptly toner image is arranged by casting die to be heated at film in the gap and the recording materials between the casting die.The toner image that contains the recording materials surface is heated through film by well heater, and loose like this toner image just is heated, and toner is fused or softening so that be fixed on the recording materials.
Film heated type equipment has many advantages, and promptly well heater thermal capacity is low, compares with general roll-type equipment, can reduce the stand-by period, so equipment is able to quick startup, the saving electric energy.
In the heating or visual fixed equipment of film heated type, general film comprises basic unit 51 as shown in Figure 5, last separate layer 53 and they middle initial layers 52 between the two.Whole film all shows heat-resisting character.
If the operating speed of this heating arrangement has improved, visual heating will go wrong, and therefore, because toner image shortened in the time cycle of heating zone, fixing (fixation) time of image is not enough.
Guarantee that physical strength satisfies the requirement of high speed operation if increase the thickness of film so that gain in strength, the heat of well heater is transmitted bad, and the result is a poor heating.
Therefore, a fundamental purpose of the present invention provides a kind of image heating apparatus and a kind of film, even operating speed improves, toner image also can fully heat.
Another fundamental purpose of the present invention is that even provide the thickness of a kind of image heating apparatus and a kind of film film to increase, toner image also can fully heat.
Another fundamental purpose of the present invention provides a kind of image heating apparatus and film, and the thermal conductance particle is contained in the basic unit of this film, and middle sheet contains the conducting particles of disperse.
Another purpose of the present invention provides a kind of image heating apparatus, it is characterized in that ceramic particle in disperse in the film.
A further object of the present invention is for image heating apparatus provides a kind of film, and disperse has ceramic particle in the sheet basic unit of this kind film.
The image heating apparatus that is provided comprises well heater according to an aspect of the present invention; A kind of film is provided, and its side can contact with well heater, and opposite side can contact with the recording materials that are loaded with indefinite image, and this kind film can move together with recording materials, it is characterized in that indefinite image heats by the heat of film by well heater; It is characterized in that this kind film comprise one can be with the sheet basic unit of well heater contact, can be with contacted dividing layer of recording materials and the middle layer between the above two; It is characterized in that the disperse of sheet basic unit the thermal conductance particle, and filler in the middle layer disperse.
All these purposes of the present invention, characteristics and advantage will be seen clearlyer when preferential embodiment illustrates below connection with figures is considered the present invention.
Fig. 1 is the image heating apparatus sectional view that illustrates according to one embodiment of present invention.
Fig. 2 shows the used film structure of Fig. 1.
Fig. 3 shows used according to another embodiment of the invention film structure.
Fig. 4 shows according to the present invention the used film structure of another embodiment.
Fig. 5 shows a kind of structure of common film.
Preferential embodiment of the present invention is described with reference to the accompanying drawings.
Consulting Fig. 1 earlier, the typical fixation equipment of tension-type film is shown, is the image heating apparatus of film hot type.
In the figure, round-robin heat-resistant film 1 (fixation film) stretches in three parallel parts, and they are live-rollers 14, loose roll 15 and well heater 9.By rotating live-roller 14 along the direction shown in the heads such as (clockwise), round-robin film 1 just rotates along the A direction.The function of pressure roller 16 is that recording materials are touched on the film by pressure.
Well heater 9 comprise 8, one of a high heat-conducting base pass through the power supply that connects give birth to the heat resistant layer 7 of heat.The sliding surface of film is coated with the insulating glass coating 10 with 10 micron thickness.What represent with reference number 11 and 12 then is the heater support that is connected on the thermistor on the unshowned well heater temperature control circuit and supports well heater by insulation.
After the imaging enabling signal was sent, unshowned imaging station began imaging operation, and the recording materials P that end face is loaded with uncertain toner image T sends in the fixation equipment, especially sends among the gap N between endless film 1 and the pressure roller 16.With the motion of same speed, tight contact film surface simultaneously, does not have fine wrinkle or does not have traversing no surface deviation at equidirectional for recording materials P and film.Power to well heater 9 with preset time corresponding to the imaging enabling signal, toner image T is the fusion image by the nip N thermoplastic like this.
Recording materials and endless film separate with endless film 1 because radius-of-curvature is different, and are unloaded in a dish simultaneously by after the nip N.To when unloading recording materials, toner cools off fully, solidifies, and can be completely fixed on the recording materials P.
Well heater 9 thermal capacity are little, and do insulation by support 12 and support, so the nip N surface temperature of well heater 9 reaches the fusing point (this temperature is enough to image is fixed on the recording materials P) of toner rapidly.For this reason, do not need auxiliary heating (to preheat, so just can save electric energy and can prevent that thermal imaging system from heating up.
Fig. 2 shows the structure of endless film 1.Endless film 1 comprises sheet basic unit 101, can have upper strata 103 (P: parts to be heated or material) and the middle layer 102 between the two of cutting apart character with recording materials P contact.Therefore, it is three layers of film.The filler that each layer comprises is as described below.
(1) insulating ceramics particle, the thermal conductance particle 18 of disperse contained in sheet basic unit 101 (heat stable resin PI---polyimide), such as the electrical isolation metal oxide particle, as filler so that high thermal conductivity and high strength to be provided.
For example particle 18 can with material have oxidation that magnesium (MgO: silicon nitride (Si magnesium oxide) is arranged
3N
4), zinc paste (ZnO
2), boron nitride (BN), aluminium oxide (Al
2O
3: alundum (Al) or the like.These particles are measured in PI and are preferably 20% to 50% of weight.If content is higher than 20%, heat conductance and physical strength are just enough.If content is too big, the flexible of film will reduce.
Sheet basic unit 101 is electrical isolations because it directly and well heater 9 contact, therefore, basic unit is on-insulated as chankings, (is not less than 10
11Ohmcm), the thickness of the glass coating 10 of well heater 9 must increase to guarantee the insulativity from the electrical safety viewpoint.Therefore, the thickness that increases glass coating 10 has destroyed the effect that increases the film thermal conductivity.
By at sheet basic unit disperse thermal conductance particle, can improve the thermal conductivity of film.
(2) as for film middle layer 102, the electricity that the jointing material that contains polyamide resin material and fluorine resin material includes disperse is led ceramic particle, metallics, electricity and is led metal oxide powder, carbon black or other conducting particles 19 as filler, to guarantee the bond strength between electric conductivity, high heat conductance and upper strata 103 and the sheet basic unit 101.
Particulate material also comprise titanyl compound (TiO for example
2), silit (SiC), boron carbide or the like.
The middle layer 102 of thermal conductance particle 19 disperses has individual 10
7Ohm/ mouth or littler surface resistance, it is electrical ground.
Do like this, just can ensure the bonding of film upper strata 103 and sheet basic unit 101, and, but the charge potential conductively-closed that produces because of the friction between the glass coating 10 of insulating trip basic unit 101 and well heater 9, whereby, the heat conductance of making good use of can prevent that image from disturbing.
(3) as for film upper strata 103, the electricity that the many formaldehyde of fluorine resin material (PFA), polytetrafluoroethylene (PTFE) or film epoxy polyamide (FEP) contain disperse is led ceramic particle, metallics, electricity and is led metal oxide particle, carbon black or other electricity and lead particle 19, and its weight content is 0.5%～3%.
Do like this, the surface resistance that just can make upper strata 103 is 10 °～10
12The ohm/ mouth), so just can suppress the escape that recording materials P goes up electric charge, can prevent that the film surface from electrifying.In addition, thermal conductivity has improved, because of the wearing and tearing that cause with recording materials P friction have also reduced.
Below be aluminium, zirconia, titanyl compound (titanium dioxide) and the specific insulation of polyimide (PI) and being exemplified below of thermal conductivity:
ZnO
2: be not less than 10
14Ohmcm (ohmcm)
16.8～29.4(W/mk)
Al
2O
3: be not less than 10
12Ohmcm:2.5 (W/mk)
TiO
2：0.8ohm.cm：3.0(w/mk)
PI: be not less than 10
14Ohm.cm:0.29 (w/mk)
In order to produce film with above-mentioned character, the disperse PYROKISUMA magnesium oxide (MgO) of the PI of sheet basic unit 101 (polyimide) weight 40%,, can buy as filler from the KygwaKagaku KabushikiKaisha of Japan.The polyamide in middle layer 102 adds the silit that fluorine resin material contains the disperse of 75% weight, can be from SnmikaCementKabushiki Kaisha, and Japan has bought surface resistance and has been about 10
5The ohm/ mouth.As for upper strata 103, the fluorine resin material that contains 30/70 PFA/PTFE (many formaldehyde/teflon) comprises 1 of disperse.(the dividing layer surface resistance connects and is about 10 the silit of 2% weight
11The ohm/ mouth) this film actual production come out, its performance is compared with general film and is had the following advantages: the general film disperse of performance/film filler film thermal conductivity 1 2.1 dual intensity (kg/mm
2) 1 1.6 times of elasticity 508 630 (in the time of 200 ℃) dividing layer life-spans (wearing and tearing)
Can recognize that from last table the intensity of film is brought up to 1.2 times, thermal conductivity is brought up to 2 times, brings up to 1.6 times the serviceable life of dividing layer.
Fig. 5 shows general film (51: 50 microns on its PI layer, 52: 4 microns of bottoms, 53: 10 microns of dividing layers), and the target temperature of well heater 9 must reach 190 ℃ of fixation character when guaranteeing that processing speed reaches 24mm/s (mm/second).And each layer of present embodiment comprises the film (101: 50 microns in sheet basic unit, 102: 4 microns in middle layer, 103: 10 microns on upper strata) of filler, can provide enough fixation performances according to 160 ℃ target temperatures.
Because the heat conductance of disperse is contained in sheet basic unit, the heat of well heater 9 can be delivered on the toner image at once.Therefore,, perhaps increased the thickness of film in order to improve intensity even film speed has increased, film also can be fully on the toner image of the heat transferred of well heater 9 to the recording materials P.
In this embodiment, the effect of thermal conductance particle is the intensity that strengthens film, therefore, even must improve film intensity in order to improve processing speed, does not also need to increase the thickness of film.Therefore, thermal conductivity and unaffected.
In addition, in general equipment, handling after 200,000, on the edge of recording materials P, can recognize the vestige of wearing and tearing, but, just do not seeing that such wear print is arranged for this disperse filler film.
About image quality, make the middle layer electricity lead (approximate 10
5The scattering of toner so just can not take place the ohm/ mouth), and electrical ground.Because it is (approximate that separate layer is a semiconductor
11The ohm/ mouth) so no matter the unevenness of toner how, also can not take place in environmental conditions.
With reference to figure 3 explanation an alternative embodiment of the invention.
In this embodiment, palpus formula (amorphous glass staple fibre, crystal staple fibre) thermal conductance particle 20 is as filler each layer disperse at film 30, particularly disperse in sheet basic unit 101.Do like this, can improve the intensity and the thermal conductivity of film.
Particularly, available material comprises that for example potassium titanate must (K
2T
15O
13, K
2O
nTiO
2) (n=1,2,4,6,8), zinc paste palpus (ZnO), silicon carbide whisker (SiC), silicon nitride must (Si
3N
4).
In this embodiment, sheet basic unit 101 comprises TISMO-D (8-potassium titanate palpus of 30% weight.Can buy from Japanese OHTSUKA KAGAKU KABUSHIKI KAISHA) dispersed granules is as thermal conductance particle 20, the DENTALL-WK200 dispersed granules (can buy from the OHTSUKA KAGAKUSKABUHIKIKAISHA of Japan, electricity is led the potassium titanate palpus) of 20% weight is contained in middle layer 102; Film upper strata 103 comprises the DENTALLWK200 dispersed granules of 1.0% weight.The performance of this kind film is as follows: character/film disperse filler film thermal conductivity 1.5 dual intensity (kg/mm
2) 1050 middle layer resistance 2.0 * 10
6Dividing layer resistance 8.2 * 10
112 times of dividing layers serviceable life (wearing and tearing)
Be appreciated that by above-mentioned situation this embodiment film shows better heat conductance and better intensity.Its durability is better than the foregoing description.
The palpiform of the raising intensity that another is available is " four pin shapes " (three-dimensional) or squamous.Use this palpiform, vertically all improving with the film intensity that makes progress in week.If employing aciculiform, just filler trends towards one-way, intensity just only improves in one direction like this.
With reference to figure 4, another kind of embodiment film is described.In this embodiment, filler three classes 18 and 19 among Fig. 2, palpiform among Fig. 3 and so on 20 and 21 are mixed and are ordered also disperse in sheet basic unit 101, middle layer 102 and upper strata 103.
Do like this, can improve the selectance of thermal conductivity, intensity, resistance or physical property like that.Therefore, can make the film that is fit to processing speed or pressure.
Though the invention has been described with reference to film structure disclosed herein, is not limited to details described here, please comprise in this that appended claim model cuts interior modification or change.
Claims (20)
1. an image heating apparatus comprises:
Well heater;
Its first side of film can be with above-mentioned well heater contact, its second side can the recording materials of photographic fixing image contact with being loaded with not, above-mentioned film can move together with recording materials, and wherein the photographic fixing image is not heated from the heat that well heater passed by above-mentioned film;
Above-mentioned film comprises can be with the sheet basic unit of above-mentioned well heater contact, can be with the contacted dividing layer of recording materials, and above-mentioned middle layer between two-layer; Wherein the thermal conductance particle dispersion is in above-mentioned basic unit, and the filler disperse is in above-mentioned middle layer.
2. according to the image heating apparatus that requires 1 on the right, it is characterized in that above-mentioned thermal conductance particle is a ceramic particle.
3. according to the image heating apparatus of claim 1, it is characterized in that above-mentioned thermal conductance particle is a metal oxide particle.
4. according to the image heating apparatus of claim 1, it is characterized in that above-mentioned thermal conductance particle is a palpiform.
5. according to the image heating apparatus of claim 1, the weight mixing ratio that it is characterized in that above-mentioned thermal conductance particle in the basic unit is 20-50%.
6. according to the image heating apparatus of claim 1, it is characterized in that above-mentioned thermal conductance particle is an electrical isolation.
7. according to the image heating apparatus of claim 1, it is characterized in that the filler in the above-mentioned middle layer is a conducting particles.
8. according to the image heating apparatus of claim 1, it is characterized in that above-mentioned middle layer is the coating between above-mentioned basic unit and the dividing layer.
9. it is characterized in that according to the image heating apparatus of claim 1 electricity leads particle dispersion in above-mentioned dividing layer.
10. the film used of an image heating apparatus comprises:
Sheet basic unit;
The surface segmentation layer;
Middle layer between above-mentioned basic unit and surface segmentation layer;
Wherein the thermal conductance particle in disperse in above-mentioned basic unit, and filler in disperse in above-mentioned middle layer.
11., it is characterized in that above-mentioned heat conduction particle is a ceramic particle according to the film of claim 10.
12., it is characterized in that above-mentioned heat conduction particle is a metal oxide particle according to the film of claim 10.
13., it is characterized in that above-mentioned heat conduction particle is the particle of palpiform according to the film of claim 10.
14., it is characterized in that above-mentioned thermal conductance particle weight mixing ratio in the basic unit is 20-50% according to the film of claim 10.
15. an image heating apparatus comprises:
Well heater;
Film, its first side can contact with above-mentioned well heater, and its second side can the recording materials of photographic fixing image contact with being loaded with not, and above-mentioned film can move together with recording materials, wherein, the heat of the available above-mentioned well heater of photographic fixing image does not heat by film;
Ceramic particle in disperse in above-mentioned film.
16. according to the image heating apparatus of claim 15, it is characterized in that above-mentioned film includes multilayer, above-mentioned ceramic particle disperse is can be with the sheet basic unit of above-mentioned well heater contact.
17. the image heating apparatus according to claim 16 is characterized in that the weight mixing ratio of above-mentioned ceramic particle in the basic unit is 20-50%.
18., it is characterized in that above-mentioned ceramic particle is an electrical isolation according to the image heating apparatus of claim 16.
19. the film that an image heating apparatus is used comprises:
Sheet basic unit;
The surface segmentation layer;
Ceramic particle in disperse in above-mentioned basic unit.
20. according to the film of claim 19, the weight mixing ratio that it is characterized in that the ceramic particle in the above-mentioned lamella is 20-50%.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP354633/93 | 1993-12-28 | ||
| JP5354633A JPH07199699A (en) | 1993-12-28 | 1993-12-28 | Film for heater and heater |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1115433A true CN1115433A (en) | 1996-01-24 |
| CN1042977C CN1042977C (en) | 1999-04-14 |
Family
ID=18438874
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN94113510A Expired - Fee Related CN1042977C (en) | 1993-12-28 | 1994-12-28 | Image heating apparatus and image heating film |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPH07199699A (en) |
| KR (1) | KR0159794B1 (en) |
| CN (1) | CN1042977C (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102193431A (en) * | 2010-03-03 | 2011-09-21 | 株式会社理光 | Fixing device and image forming apparatus |
| CN108681222A (en) * | 2017-03-28 | 2018-10-19 | 佳能株式会社 | The rotatable pressing element of electrophotography and its manufacturing method and fixing device |
| CN109507859A (en) * | 2018-12-12 | 2019-03-22 | 珠海市汇威打印机耗材有限公司 | A kind of fixing roller and preparation method thereof |
| CN114683559A (en) * | 2020-12-31 | 2022-07-01 | 利诺士尖端材料有限公司 | Low dielectric heat sink and method for making same |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1020487A4 (en) * | 1997-09-30 | 2001-03-14 | Ngk Insulators Ltd | Plastic-ceramic composite material |
| JP2006084821A (en) | 2004-09-16 | 2006-03-30 | Canon Inc | Heat fixing apparatus |
| JP4700948B2 (en) * | 2004-10-20 | 2011-06-15 | キヤノン株式会社 | Image forming apparatus |
| JP4602121B2 (en) * | 2005-03-03 | 2010-12-22 | 日本バイリーン株式会社 | Electrospinning collection device |
| JP2010066509A (en) * | 2008-09-10 | 2010-03-25 | Sumitomo Electric Ind Ltd | Belt for fixing |
| JP2012011555A (en) * | 2010-06-29 | 2012-01-19 | Toray Ind Inc | Flame-retardant film |
| JP6255996B2 (en) * | 2013-12-27 | 2018-01-10 | 富士ゼロックス株式会社 | Endless belt, fixing device, and image forming apparatus |
| CN108728784B (en) * | 2017-04-25 | 2024-01-12 | 佛山市顺德区美的电热电器制造有限公司 | Non-stick coating, preparation method thereof, cooker and cooking equipment |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2516886B2 (en) * | 1987-06-16 | 1996-07-24 | キヤノン株式会社 | Image heating device |
| JPH01187582A (en) * | 1988-01-22 | 1989-07-26 | Canon Inc | Fixing device |
| JP2509544B2 (en) * | 1987-08-07 | 1996-06-19 | キヤノン株式会社 | Elastic rotating body and fixing device having the same |
| JP2646444B2 (en) * | 1988-12-12 | 1997-08-27 | キヤノン株式会社 | Image heating fixing device |
| JPH0810377B2 (en) * | 1989-06-22 | 1996-01-31 | キヤノン株式会社 | Fixing device and fixing resin film |
| JPH04197622A (en) * | 1990-11-28 | 1992-07-17 | Gunze Ltd | Seamless belt made of fluorine resin and its manufacture |
| JPH05249852A (en) * | 1992-03-03 | 1993-09-28 | Canon Inc | Image heater and heating film |
-
1993
- 1993-12-28 JP JP5354633A patent/JPH07199699A/en active Pending
-
1994
- 1994-12-27 KR KR1019940037232A patent/KR0159794B1/en not_active IP Right Cessation
- 1994-12-28 CN CN94113510A patent/CN1042977C/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102193431A (en) * | 2010-03-03 | 2011-09-21 | 株式会社理光 | Fixing device and image forming apparatus |
| US8583019B2 (en) | 2010-03-03 | 2013-11-12 | Ricoh Company, Ltd. | Fixing device and image forming apparatus incorporating same |
| CN102193431B (en) * | 2010-03-03 | 2014-07-16 | 株式会社理光 | Fixing device and image forming apparatus |
| CN108681222A (en) * | 2017-03-28 | 2018-10-19 | 佳能株式会社 | The rotatable pressing element of electrophotography and its manufacturing method and fixing device |
| CN109507859A (en) * | 2018-12-12 | 2019-03-22 | 珠海市汇威打印机耗材有限公司 | A kind of fixing roller and preparation method thereof |
| CN114683559A (en) * | 2020-12-31 | 2022-07-01 | 利诺士尖端材料有限公司 | Low dielectric heat sink and method for making same |
Also Published As
| Publication number | Publication date |
|---|---|
| KR0159794B1 (en) | 1999-03-20 |
| CN1042977C (en) | 1999-04-14 |
| JPH07199699A (en) | 1995-08-04 |
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Legal Events
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|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 19990414 Termination date: 20131228 |