JP2005093400A - Mold-releasing heating member, heating fixing member, mold-releasing pressurizing member, heating fixing device, heating fixing roller, pressurization fixing roller, and electrophotographic device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a technology in which the total amount of thermal energy applied on a heating roller or the like having non-adhesiveness (mold releasing nature) at the time of heating and fixing an unfixed image on a recording material is reduced, and thereby, the power consumption is suppressed to the limit and the heat once generated is effectively utilized. <P>SOLUTION: The mold-releasing heating member has a structure in which at least one layer of an infrared reflecting film 10, an exothermic layer 11, and a wavelength selection transmission film 12 are laminated successively on the surface of a substrate 2, and a mold-releasing layer 13 is provided on the surface of the wavelength selection transmission film. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

The present invention relates to improvements in heat fixing members, pressure fixing members and the like used in image forming apparatuses such as electrophotographic copying machines, printers, facsimiles, etc. It is related to the technology to realize energy saving in heat application to heat fixing roller, belt, etc. with adhesive surface layer, efficient use of applied heat, and quick rise to the temperature required for operation. is there.
Furthermore, the present invention relates to an efficient heating and heat retaining material in a thermal processing tool such as a processing roller, an endless or endless belt, a pressing pad, and a pressing tool that uses heat applied to the surface and a method of using the same. Is.

Various fixing systems have been proposed and implemented as heat fixing apparatuses used in image forming apparatuses such as electrophotographic copying machines, printers, and facsimile machines. Recently, particularly a roller fixing type, in particular, a heat roller fixing device (heat roller) in which at least one of a pair of fixing rollers that pressurize while heating a recording material through a nip portion is heated by a heat source. The roller fixing method is the mainstream.
Of the pair of fixing rollers, the heat fixing roller in contact with the surface of the recording material on the toner image carrying side is called a heating roller, and the other pressure fixing roller is called a pressure roller.
The heating roller has a hollow cylindrical shape, and a heating element as a heating source, for example, a tubular halogen lamp is disposed on the central axis thereof. In general, a heating roller has a polytetrafluoroethylene resin (hereinafter referred to as PTFE) or a tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer (hereinafter referred to as PFA) on the outer peripheral surface of a metal substrate such as an aluminum alloy or iron. An offset prevention layer of a highly releasable material such as a fluororesin or a silicone rubber is provided to improve the releasability (non-adhesiveness) of the heating roller layer.
From the heating source disposed in the center of the heating roller, heat is uniformly radiated to the inner surface of the heating roller to which a heat absorber having a high heat radiation rate is applied, and the temperature distribution becomes uniform in the circumferential direction. The temperature is raised to a temperature suitable for fixing, for example, 150 to 200 ° C.
The heating roller and pressure roller are pressed against each other in the opposite direction, and the unfixed developer (hereinafter referred to as toner) formed on the recording material paper or polymer sheet is pressed against (nip part). After being heated and melted and fixed on the recording material, it is discharged out of the apparatus by a discharge roller.

According to the estimation by the present inventors, the power consumption of the electrophotographic copying machine generally occupies a large proportion of about 50 to 70% of the entire copying machine in the system of the fixing device. The effective use of the image forming apparatus is an important issue for reducing power consumption along with the rapid start-up of the fixing device. In order to solve this problem, a method for reducing the electric energy for obtaining the necessary heat application by reducing the heat capacity of the object to be heated, for example, as shown in JP-A-10-319761, a thin-film heating layer There is a technology intended to reduce the required electrical energy and to quickly start up to the operating temperature. In the method disclosed in Japanese Patent Laid-Open No. 10-319761, the roller base is made of heat-resistant glass, and an infrared ray (heat ray) reflecting layer is provided on the surface opposite to the heat generating layer to reduce heat radiation from the heat generating layer to the inner surface of the roller. Is preventing. However, with glass substrates, glass materials may not be used during high-speed rotation of the roller or depending on the design of the pressure applied to the roller (to form an appropriate nip width). Therefore, it is not possible to take special measures such as slightly reducing the diameter of the roller base in the vicinity of the center instead of the cylinder. Further, the difference in thermal expansion coefficient between the heat generation layer or infrared reflection layer and the glass substrate tends to cause peeling of the layer (film) due to a thermal cycle of normal temperature and heating.
In order to make efficient use of the generated heat, Japanese Patent Application Laid-Open No. 7-181823 arranges a heat ray reflector along the outer periphery of the heating roller. This also aims at stable power supply with low power consumption by the heat generating film, but when a heat ray reflector is arranged around the roller, the power supply part that supplies power to the heat generating film and the part in contact with the pressure member has a reflection effect. It is not perfect to completely prevent heat dissipation. Further, when such an additional member is disposed on the roller, there are problems in cost and manufacturing.

In JP-A-2000-047507, an infrared source and its reflector (elliptic mirror) are arranged on the surface of a roller composed of an infrared absorbing member, and the temperature is raised to the fixing temperature without heating the inside of the roller. Although it is contact heating, necessary portions are heated at high speed, and unnecessary portions are not heated, so that energy saving of the fixing device and shortening of the rise time are achieved. However, although it has the effect of collecting light by infrared reflection, it cannot be said that the use efficiency of the energy used for fixing is high compared to the original energy of the heating source as the fate of non-contact heating. It becomes an obstacle in designing small and light weight.
Problems such as the improvement of heat energy utilization efficiency, downsizing, and manufacturing cost as described above are not limited to the fixing roller constituting the fixing device of the image forming apparatus. This is a problem that occurs in general technology. For example, there is a problem that occurs also in a heating material technique and a heat control technique that effectively perform heating functions (power saving, rapid heating rise) such as a heat fixing belt, a fixing film, and a fixing pad used in a fixing device. Moreover, it is a problem which arises similarly also in processing tools, such as a tool excellent in the function of the non-adhesive surface, a heat roller, and a rolling roller.
Japanese Patent Laid-Open No. 10-319761 JP-A-7-181823 Japanese Patent Laid-Open No. 2000-047507

The present invention reduces the total amount of heat energy applied to a non-adhesive (releasing) heating roller or the like when, for example, heat-fixing an unfixed image on a recording material, and thus reduces power consumption. It aims at providing the technique for using the heat | fever once produced | generated effectively while suppressing to the limit.
Specifically, it has the following purposes.
To reduce the heat capacity of the object to be heated that receives heat from the heat source to the limit, and to exhibit the function of the heat fixing member with very little power consumption.
In addition to the above, the heat capacity of the object to be heated that receives heat should be made as small as possible, and the rise time until the fixing process can be carried out is extremely shortened.
To provide materials and configurations that can efficiently use heat generated with very little power consumption without dissipating.
The part that fulfills its function autonomously works and solves the problem without adding any special additional mechanism or parts. In addition, the above-described problems can be solved easily and inexpensively without changing the design of the conventional fixing device or by using the conventional design as it is.

In order to solve the above-mentioned problem, a releasable heat generating member according to the invention of claim 1 comprises a structure in which at least one infrared reflective film, a heat generating layer, and a wavelength selective transmission film are sequentially laminated on a substrate surface, A release layer is provided on the surface layer of the wavelength selective transmission film.
The releasable heat generating member according to the invention of claim 2 is characterized in that, in claim 1, the surface of the substrate has a porous structure.
The releasable heat generating member according to the invention of claim 3 is characterized in that, in claim 1 or 2, the heat generating layer is used as a heat source.
According to a fourth aspect of the present invention, a heat fixing member includes the releasable heat generating member according to the first, second, or third aspect.
A heat-fixing member according to a fifth aspect of the present invention is a releasable heating member comprising at least a wavelength-selective transmission film on the surface of a substrate, and a release layer laminated on the surface layer of the wavelength-selective transmission film. A heat source arranged in the above is used as a heating source.

According to a sixth aspect of the present invention, there is provided a releasable pressing member comprising a structure in which at least one elastic layer, an infrared reflecting film, and a release layer are sequentially laminated on a substrate surface.
A heat fixing device according to a seventh aspect of the present invention is a heat fixing device comprising a heat fixing body, a pressure fixing body, and a housing for housing the heat fixing body and the pressure fixing body. An infrared reflection film and a wavelength selective transmission film are laminated on the inner surface of the body substrate.
A heat fixing roller of an electrophotographic apparatus according to an eighth aspect of the invention includes the heat fixing member according to the fourth or fifth aspect.
According to a ninth aspect of the present invention, a pressure fixing roller of an electrophotographic apparatus includes the releasable pressure member according to the sixth aspect.
The endless or endless belt-like heat fixing member according to the invention of claim 10 comprises at least a wavelength selective transmission film on the surface of the substrate, and a release property in which a release layer is laminated on the surface layer of the wavelength selective transmission film. A heat generating member is characterized in that a heat source disposed inside the substrate is used as a heating source.
A heat fixing device according to an eleventh aspect of the invention includes the heat fixing member according to the fourth or fifth aspect, the releasable pressure member according to the sixth aspect, or the belt-like heat fixing member according to the tenth aspect. It is characterized by having.
According to a twelfth aspect of the present invention, an electrophotographic apparatus uses the heat fixing apparatus according to the eleventh aspect.

In the invention of claim 1, claim 2, claim 3, claim 4 and claim 5, the releasable heat generating member is used for a heating roller (heat fixing member) of a heat fixing device of an electrophotographic apparatus, for example. By doing so, we were able to realize instantaneous heating rise and operation with low power consumption. The heat from the heat generation layer was efficiently raised to the specified temperature on the surface of the heating element without being dissipated outside the system, and power saving operation was realized.
In the invention of claim 3, in particular, in addition to the functions and effects corresponding to claims 1, 2, 4, and 5, the heat from the thin-film heating layer is conducted to the substrate and dissipated outside the system. Since it can be used without doing so, it has become possible to further enhance the above-described effects.
In the invention of claim 4, the releasable heat generating member of the present invention can be applied to a type in which the heat source is disposed inside the base.
In the invention of claim 6, for example, as an application to a fixing device of an electrophotographic apparatus, the heat from the heating member can be used efficiently as a result of using it as a pair with the heating member, and the rise of the temperature of the fixing device is quick. In addition, power saving during operation was realized.

According to the seventh aspect of the present invention, the temperature can be maintained without dissipating heat from the fixing device to the outside of the system of the fixing device, so that the power supplied to the fixing device can be reduced.
In the eighth and ninth aspects of the invention, the heat fixing member and the releasable pressure member are applied to the heat fixing roller and the pressure fixing roller, respectively, thereby achieving effective use of heat and energy saving. it can.
In the invention of claim 10, the releasable heat generating member can be applied to a belt-like heat fixing member (including a film shape, a foot shape, and a pad shape).
In the invention of claim 11, by using the heat fixing member, the releasable pressure member, and the belt-shaped heat fixing member in, for example, a heat fixing device of an electrophotographic apparatus, instantaneous heating rise and operation with low power consumption are performed. It was possible to provide a fixing member capable of realizing the above.
In the invention of claim 12, the rise of the operating temperature is quicker than that of the conventional electrophotographic apparatus, and the power consumption during the operation can be reduced.

Hereinafter, the present invention will be described in detail with reference to embodiments shown in the drawings.
FIG. 1A shows an electrophotographic image forming apparatus (for example, a dry copying machine, a typical example of a heat fixing member using a releasable heating member, a releasable pressure member, etc. according to an embodiment of the present invention. 1 shows a heat fixing roller (heating roller) 1 provided in a laser printer or the like. The heating roller 1 has a configuration in which a releasable heat generating member 3 is laminated and integrated in a cylindrical shape on the outer peripheral surface of a core metal (base) 2.
The present invention can be applied not only to a roller-shaped heat fixing member but also to a fixing belt or film having an endless shape, a sheet or pad with an edge, or a pressure member requiring surface releasability. is there. Moreover, it can be used not only for the above-mentioned members but also for members that require heating characteristics and non-adhesiveness on the surface, such as a heat roller and a pressure roller for stretching a film. However, here, as a typical application example, components used in a fixing device such as a heat fixing roller will be described.
Further, the conventional heating roller has a structure in which a primer layer as an adhesive layer is applied to the surface of a base body (core metal) such as aluminum alloy A5052, and then an offset prevention layer is coated thereon. In the prior art, polytetrafluoroethylene (PTFE) and PFA (tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer) powders and dispersions are baked to 380 ° C after electrostatic powder coating and wet coating, respectively, and offset. A prevention layer was formed.
On the other hand, the configuration of the heating roller 1 of the present invention has an infrared reflecting film 10 on the surface (outer peripheral surface) of the base 2 of metal or alloy, as shown in the cross-sectional view of the main part of FIG. The heat generating layer 11 and the wavelength selective transmission film 12 are sequentially laminated at least one layer, and the outer periphery of the wavelength selective transmission film 12, that is, the uppermost layer is composed of a release layer 13. In this method, heat is generated by energizing the heat generating layer 11.

The infrared reflective film 10 may be a metal thin film, and a metal thin film having a high reflectance such as an aluminum thin film is used. In the configuration example of FIG. 1B, the surface of the base 2 made of, for example, aluminum alloy A5052 or A7075 forms a porous structure (micro uneven structure) by an anodic oxidation method. This is to ensure adhesion to the upper infrared reflection film 10 and to control the heat conductivity to the inside of the surface of the substrate 2.
The heat generating layer 11 is a thin film heating element, and a carbon thin film such as graphite or a ceramic thin film such as silicon carbide or barium titanate is used as the heat conductive film. The wavelength selective transmission film 12 is a film that can selectively transmit wavelengths in the infrared region of approximately 7 μm to 15 μm. In the present invention, a thin film of silicon monoxide SiO is used. The release layer 13 is made of electrostatic powder coating or wet coating of polytetrafluoroethylene (PTFE) or PFA (tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer) powder or dispersion, respectively, as in the prior art. It may be fired later, or an extruded PFA tube may be coated. In any case, the heat resistance temperature of the release layer 13 is 250 ° C. or higher. The lower layer of the release layer 13 is an inorganic thin film having high heat resistance, and there is no problem in firing and tube coating processing.
Although not shown in FIG. 1B, the heat generating layer 11 is energized through an electric introduction mechanism such as a conductive brush, and the heat generating layer 11 is instantaneously heated to a temperature of approximately 200 ° C. or higher. To do.
The heat (infrared rays) generated from the heat generating layer 11 is reflected directly or by the infrared reflecting film 10, passes through the wavelength selective transmission film 12 and reaches the release layer 13, and the temperature at which the surface can be instantaneously heated and fixed. Let the temperature rise. On the other hand, of the heat generated from the heat generating layer 11, the heat that has not been completely reflected by the infrared reflecting film 10 tries to be conducted to the base 2, but the thermal conductivity is limited by the porous surface of the base, and the loss due to conduction is minimized. It has become.

2A and 2B are an external view and a cross-sectional view of a main part of a heating roller according to another embodiment of the present invention. This is an example of a heat-fixing roller 1 having a heat source 10 inside a hollow cylindrical substrate (core metal) 2. A thin film that selectively transmits wavelengths in the infrared region of about 7 μm to 15 μm is provided on the innermost surface as the heat absorbing film on the inner surface of the base 2 in the same manner as the wavelength selective transmission film 12 in FIG. A thin film (high thermal conductive film) 13 having a high thermal conductivity, for example, an aluminum nitride thin film is formed below the permeable film 12 (layer close to the substrate). For example, a tube-shaped halogen heater is installed as a heat source 10 inside the base 2, and a releasable heat generating member 3 is formed on the outer surface of the base 2. The releasable heat generating member 3 of this embodiment has a configuration in which a wavelength selection film 12 and a release layer 13 similar to those in FIG.
In the case of FIG. 2, the heat radiated from the heat source 10 instantaneously reaches the inner surface side of the substrate, and the wavelength selective transmission film 12 efficiently transmits only infrared rays in the infrared region of 7 μm to 15 μm. The temperature can be increased to a temperature at which heat fixing can be performed instantaneously.

Next, FIG. 3 is a cross-sectional view of an essential part showing a configuration example of a releasable pressing member. The releasable pressing member 21 is laminated and integrated on the outer peripheral surface of a base body (core metal) 20 made of metal or the like. It has become. The releasable pressing member 21 has a structure in which an elastic layer 22 made of silicone rubber or the like, an infrared reflecting film 23, and a release layer 24 are sequentially laminated on the surface of the base 20 one by one.
The infrared reflective film 23 and the release layer 24 are the same as the infrared reflective film 10 and the release layer 13 of FIG. This member is used, for example, in a pressure rotating body such as a pressure roller that is used as a pair with a heating roller to form a nip. Taking an example of a heat fixing device of an electrophotographic apparatus, the infrared reflection film 23 receives infrared rays without receiving heat from the heating rotator (heating roller) and being deprived of heat by the image carrier (paper) or the elastic layer 22. The object of pressurization is achieved by efficiently reflecting the surface of the release layer 24 and maintaining the surface of the release layer 24 at a heating temperature suitable for fixing.
FIG. 4 is a configuration example of a heat fixing device according to an embodiment of the present invention. The heat fixing device includes a heat fixing body (heating roller) 30, a pressure fixing body (pressure roller) 31, and a heat fixing device. A body 32 and a pressure fixing body 31, and an infrared reflective film and a wavelength selective transmission film are laminated on the inner surface of the heat-resistant substrate of the housing. . The configurations and materials of the infrared reflection film and the wavelength selective transmission film are the same as those shown in the above embodiments.
That is, the heat fixing device is a set (fixing) of a pressure rotating body 31 (for example, a pressure roller of an electrophotographic apparatus) that forms a nip paired with a heating rotating body 30 (for example, a heat fixing roller of an electrophotographic apparatus). Device) is housed in a housing 32. The heating roller 1 shown in FIG. 1 or FIG. 2 and the pressure roller shown in FIG. 3 are arranged in a rotatable state in the housing 32, and an infrared reflecting film is provided on the inner surface of the housing 32. And a wavelength selective transmission film. Among the thermal infrared rays radiated from the heat fixing device, the heat in the infrared region of 7 μm to 15 μm, which is well transmitted through the atmosphere and has high thermal efficiency, is efficiently transmitted by the wavelength selective transmission film on the uppermost surface inside the housing 32, and the infrared rays It is possible to minimize heat dissipation to the outside of the housing by reflecting with the reflective film.
[Example 1]

As shown in FIG. 1B, the metal substrate surface 2 of the aluminum alloys A5052 and A7075 is previously made into a porous structure (fine concavo-convex structure) by an anodic oxidation method. In the present invention, for example, as an anodic oxidation method,
Processing conditions Electrolytic bath 10% H ₂ SO ₄ , current density 3 A / dm ² , 35 V, processing temperature 5 ± 1 ° C., processing time 30 minutes were used to form a porous structure from a depth of 12 μm to 30 μm. On this, a metal thin film of aluminum or nickel was formed with a film thickness of about 100 nm (nanometer) to 300 nm by sputtering, and this was used as the infrared reflective film 10. A carbon-based thin film such as graphite or a ceramic-based thin film such as silicon carbide or barium titanate is formed thereon by PVD (physical vapor deposition) such as a sputtering method as a conductive film having exothermic properties. The heating layer 11 is set to about 5 μm to 2 μm. On the heat generating layer 11, a wavelength selective transmission film 12 such as silicon monoxide SiO, cerium oxide CeO ₂ , ZnS or the like is formed with a film thickness of about 80 nm (nanometer) by PVD (physical vapor deposition) such as sputtering. did. The method for forming the thin film 12 is not limited to the sputtering method, and other PVD methods are also possible. The release layer 13 is made of electrostatic powder coating or wet coating of polytetrafluoroethylene (PTFE) or PFA (tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer) powder or dispersion, respectively, as in the prior art. It may be fired later, or an extruded PFA tube may be coated. A voltage and current were conducted to the heat generating layer 11 by a predetermined method and conditions, and the surface temperature of the release layer 13 was adjusted to be 170 to 180 ° C. to obtain a heat fixing roller.
[Example 2]

As shown in FIG. 2, a high thermal conductive film 13, which is a thin film having a high thermal conductivity, such as an aluminum nitride thin film, is first formed to a thickness of 300 nm on the inner surface of the base 2 such as aluminum alloy A5052, and then silicon monoxide SiO. A wavelength selective transmission film 12 such as cerium oxide CeO ₂ or ZnS was formed to a thickness of about 80 nm (nanometers). The thin film was formed by the PVD method as in Example 1. A wavelength selective transmission film 12 such as silicon monoxide SiO, cerium oxide CeO ₂ , ZnS or the like is formed on the outer surface of the substrate 2 with a film thickness of about 80 nm (nanometer) by the same method as in the first embodiment. As the release layer 13, a powder or dispersion of polytetrafluoroethylene (PTFE) or PFA (tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer) was fired after electrostatic powder coating or wet coating, respectively. As a heat source, one or a plurality of halogen heaters (lamps) were installed inside the substrate, and a heat fixing roller was formed so that the axial temperature distribution was uniform. The surface temperature of the release layer 13 was set to be the same as in Example 1.
[Example 3]
As shown in FIG. 3, after a heat-resistant intermediate layer (adhesive layer: not shown) such as PAI is applied to the surface of a cylindrical substrate 20 having a thickness of several millimeters to several tens of millimeters such as steel or aluminum alloy A5052. The elastic body 22 is covered with a film thickness of approximately 50 to 100 μm. The elastic body 22 may be a thermoplastic elastomer (TPE) or a normal silicone rubber. When a thermoplastic elastomer (TPE) is used, a fluorine-based heat resistant TPE is desirably used. This can be easily molded by a thermoplastic resin molding machine. For example, a block polymer of Daiel Thermoplastic manufactured by Daikin Industries, Ltd. was used. On the elastic body 22, a metal thin film of aluminum or nickel was formed with a film thickness of about 100 nm (nanometers) to 300 nm by sputtering, and this was used as the infrared reflection film 23. Further, in the same manner as in Example 1, the upper layer was coated with a powder or dispersion of polytetrafluoroethylene (PTFE) or PFA (tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer), and fired at about 380 ° C. did. As an implementation method, the same effect can be obtained even if the PFA tube is coated. This was used as a pressure rotator (pressure fixing body) in combination with a heating rotator (heat fixing body) that generates heat.
[Example 4]

A heat-fixing roller (reference numeral 30 in FIG. 4) in which a cylindrical substrate having a diameter of 40 mm was prepared by the method of Example 1, and a pressure roller (reference numeral in FIG. 4) in which a cylindrical substrate having a diameter of 55 mm was prepared by the method in Example 3. The heat fixing device of the electrophotographic apparatus composed of the pair 31) and the heat source was installed in a housing 32 made of heat resistant plastic such as xylon resin. On the inner surface of the housing, a metal thin film of aluminum or nickel is formed with a film thickness of about 100 nm (nanometer) to 300 nm by sputtering to form an infrared reflection film, and then silicon monoxide SiO, cerium oxide CeO ₂ is formed thereon by sputtering. A wavelength selective transmission film of ZnS or the like was formed with a film thickness of about 80 nm (nanometers). Although the heat fixing roller 30 uses the method of the first embodiment, it may be a heat fixing roller having a heat source inside the substrate as in the second embodiment.
[Example 5]
FIG. 5 is a schematic view of a processing apparatus such as a heat roller having surface releasability. A heating body (heating rotator) 40 manufactured by a method similar to that of Example 2 and a pressure body (pressing rotator) 42 manufactured by a method similar to that of Example 3 are arranged on a cylindrical base body, and fixed. While maintaining the pressure and the nip width, the workpiece, for example, the film stretching material 43 is processed. Although the halogen heater 41 is disposed inside the heating body 40 as a heat source, the present invention is not limited to this. Using this, it became possible to efficiently heat and stretch the film as the workpiece so as not to stick to the processing roller.
[Example 6]

In FIG. 6, a heating member (heating rotator) 50 manufactured by the same method as in Example 1 was used as a heat fixing roller, and a heat source 51 such as a halogen heater was disposed therein. On the other hand, the pressure member (pressure rotator) 52 produced by the same method as in Example 3 is used as a pressure roller, and both are used as a heat fixing device. A recording material 53 as an image carrier, for example, an unfixed developer (toner) 54 on paper, can be efficiently produced, and a high-quality heat fixing device can be manufactured without taking much power consumption.
[Example 7]
FIG. 7 shows an example of a heat fixing device using an endless fixing belt. A fixing belt 60 produced by the method of Example 1 or Example 2 is provided on a thin belt such as steel, and one or a plurality of heat sources 61 are disposed therein. The fixing belt 60 includes an upper pressure roller 62 and a pressure applying member 63, and a predetermined surface pressure and a nip (NIP) width are ensured between the lower pressure roller 64 and the opposite surface. The lower pressure roller 64 is manufactured by the same method as in the third embodiment. A heat fixing device was formed using the above-described constituent members. A recording material 65 as an image carrier, for example, an unfixed developer (toner) 66 on paper can be efficiently produced, and a high-quality heat fixing device can be made without consuming a large amount of power consumption. .
[Example 8]

本発明の離型性発熱部材、離型性加圧部材は、電子写真式画像形成装置の加熱定着装置の加熱定着部材や加圧部材のみならず、非粘着性表面の機能に優れた工具、ヒートローラ、圧延ローラなどの加工工具、プロセス装置の省電力および迅速な加熱立ち上がりの技術一般に適用することができる。
また、本発明の加熱定着部材は、電子写真式複写機、レーザープリンタ等の画像形成装置などの静電転写プロセスを利用する機器の加熱定着ローラのみならず、加熱定着ベルト、定着用加圧ローラ、定着フィルム、定着パッドなどの加熱機能（省電力、迅速な加熱立ち上がり）を有効に行う加熱材料技術並びに熱制御技術である。なお、請求項において、ベルト状加熱定着部材とは、ベルト状は勿論、フィルム状、シート状、パッド状の部材も含むものである。 The electrophotographic image forming apparatus having the configuration of FIG. 8 equipped with the heat fixing apparatus of the present invention was evaluated for operation.
In order to make a comparison with the prior art, the result of evaluating the combination of the components of the heat fixing device with respect to the heat roller (heat fixing member) having a diameter of 40 mm and the pressure roller (pressure fixing member) having a diameter of 55 mm as follows. Table 1 was obtained.
A: A fixing device composed of a heating roller manufactured in Example 1 of the present invention and a pressure roller in which a silicone rubber elastic layer is covered with a PFA tube.
B: A fixing device composed of a heating roller manufactured in Example 2 of the present invention and a pressure roller in which a silicone rubber elastic layer is covered with a PFA tube.
C: A fixing device composed of the heating roller manufactured in Example 1 of the present invention and the pressure roller manufactured in Example 3 of the present invention, in which the inner surface of the casing of the fixing device is not coated.
D: a fixing device composed of the heating roller manufactured in Example 1 of the present invention and the pressure roller manufactured in Example 3 of the present invention. The inner surface of the casing of the fixing device is the method of Example 4 of the present invention. What is coated.
E: A fixing device comprising the fixing belt and the pressure member produced in Example 7 of the present invention.
Comparative example: a fixing device comprising a heating roller and a pressure roller manufactured by a conventional technique.










Table 1.

The releasable heat generating member and releasable pressure member of the present invention are not only a heat fixing member and a pressure member of a heat fixing device of an electrophotographic image forming apparatus, but also a tool having an excellent non-adhesive surface function, The present invention can be applied to general techniques for power saving and rapid heating start-up of processing tools such as heat rollers and rolling rollers, and process devices.
The heat fixing member of the present invention is not only a heat fixing roller of an apparatus using an electrostatic transfer process such as an image forming apparatus such as an electrophotographic copying machine or a laser printer, but also a heat fixing belt, a pressure roller for fixing. This is a heating material technology and a thermal control technology that effectively perform heating functions (power saving, rapid heating rise) of fixing films, fixing pads and the like. In the claims, the belt-shaped heat fixing member includes not only a belt shape but also a film shape, a sheet shape, and a pad shape member.

(A) is a view showing a heat fixing roller (heating roller) as a heat fixing member using a releasable heat generating member, a releasable pressure member and the like according to the embodiment of the present invention, and (b) is a diagram (a). FIG. (A) And (b) is a block diagram which shows the block diagram of the heat roller of other embodiment of this invention, and a principal part structure. Sectional drawing which shows the structure of the releasable pressurization member which concerns on one Embodiment of this invention. 1 is a diagram illustrating a configuration example of a heat fixing device according to an embodiment of the present invention. Schematic of processing apparatuses, such as a heat roller, which has surface releasability. FIG. 3 is a diagram illustrating an example in which a heating member manufactured by a method similar to that in Embodiment 1 is used as a heat fixing roller, and a heat source such as a halogen heater is disposed therein. FIG. 3 is a diagram illustrating an example of a heat fixing device using an endless fixing belt. 1 is a main part configuration diagram of an electrophotographic image forming apparatus according to the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Heating roller, 2 Base | substrate (core metal), 3 Releaseable heat generating member, 10 Infrared reflective film, 11 Heat generating layer, 12 Wavelength selective transmission film, 13 Release layer, 20 Base | substrate (core metal), 21 Release property addition Pressure member, 22 Elastic layer (elastic body), 23 Infrared reflecting film, 24 Release layer, 30 Heat fixing body (heating roller), 31 Pressure fixing body (pressure roller), 32 Housing, 40 Heating body, 41 Halogen heater, 42 Pressurizing body (pressurizing rotating body), 50 Heating member (heating rotating body), 51 Heat source, 52 Pressurizing member (pressing rotating body), 53 Recording material, 54 Developer (toner), 60 Fixing belt, 61 heat source, 62 upper pressure roller, 63 pressure applying member, 64 lower pressure roller, 65 recording material

Claims (12)

  Releasability characterized by comprising a structure in which an infrared reflecting film, a heat generating layer, and a wavelength selective transmission film are sequentially laminated on the surface of the substrate, and a release layer is provided on the surface of the wavelength selective transmission film. Heating member.   The releasable heat generating member according to claim 1, wherein the base surface has a porous structure.   The releasable heat generating member according to claim 1, wherein the heat generating layer is used as a heat source.   A heat fixing member comprising the releasable heat generating member according to claim 1.   A releasable heat generating member having at least a wavelength selective transmission film on a surface of a substrate and having a release layer laminated on a surface layer of the wavelength selective transmission film, wherein a heat source disposed inside the substrate is used as a heating source. A heat fixing member.   A releasable pressure member comprising a structure in which at least one elastic layer, an infrared reflecting film, and a release layer are sequentially laminated on the surface of a substrate.   A heat-fixing device comprising a heat-fixing body, a pressure-fixing body, and a casing for housing the heat-fixing body and the pressure-fixing body. A heat fixing device, wherein a permeable film is laminated.   A heat fixing roller of an electrophotographic apparatus comprising the heat fixing member according to claim 4.   A pressure fixing roller of an electrophotographic apparatus, comprising the releasable pressure member according to claim 6.   A releasable heat generating member having at least a wavelength selective transmission film on a surface of a substrate and having a release layer laminated on a surface layer of the wavelength selective transmission film, wherein a heat source disposed inside the substrate is used as a heating source. An endless or endless belt-like heat fixing member as a feature.   A heat fixing apparatus comprising the heat fixing member according to claim 4, the releasable pressure member according to claim 6, or the belt-shaped heat fixing member according to claim 10. An electrophotographic apparatus using the heat fixing apparatus according to claim 11.

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