JPH10268679A - Belt for fixation and its production - Google Patents

Abstract

PROBLEM TO BE SOLVED: To remarkably improve adhesive strength between an elastic layer and a releasable layer successively formed on a tubular substrate and to produce a belt for fixation excellent in durability. SOLUTION: An elastic layer of heat resistant elastomer is formed on a tubular substrate and a releasable layer of at least one selected from among silicone rubber, fluororubber and fluoiroresin is formed on the elastic layer to obtain the objective belt for fixation. At this time, an elastic layer is formed using an elastomer compsn. prepd. by dispersing lump particles of 20-100 μm average particle diameter in heat resistant elastomer and holes are made in the surface of the elastic layer by removing the particles so as to form fine raggedness at the interface between the elastic layer and the releasable layer.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fixing belt used in a fixing section of an image forming apparatus such as an electrophotographic copying machine, a laser beam printer, a facsimile, and the like. The present invention relates to an elastic fixing belt suitably used for a fixing unit of a model capable of outputting a partial color or full color image. However, the fixing belt of the present invention does not exclude applications to similar products such as pressure bonding belts and transport belts that utilize the same characteristics (elasticity, non-staining property, etc.).

[0002]

2. Description of the Related Art In an image forming apparatus such as an electrophotographic copying machine, a facsimile, a printer, etc., in a final stage of printing / copying, a toner on a transfer material (eg, transfer paper) is generally heated and melted to form a toner image. Fixed on transfer paper. More specifically, in an electrophotographic copying machine, a latent image carrier (eg,
Forming a latent image by performing image exposure on the photosensitive drum), attaching a developer (toner) to the latent image to form a visible image (toner image), Copying is performed through a step of transferring a toner image onto a transfer sheet and a step of fixing an unfixed toner image on the transfer sheet onto the transfer sheet by a method such as heating. As the toner, generally, colored resin particles in which a colorant such as carbon black is dispersed in a binder resin are used.

As a fixing method, a heat fixing method is generally used, and a heat roller fixing method as shown in FIG. 1 has been generally used. In the heat roller fixing method, a heat heater 2 is disposed inside, and a heat roller (fixing roller) 1 whose outer periphery is coated with rubber or resin having good releasability is brought into pressure contact with a rubber roller (pressing roller) 5. The toner is heated by passing through the transfer paper 4 on which the toner image 3 is formed, and is fused on the transfer paper. The heat roller is heated to a temperature equal to or higher than the melting temperature of the binder resin of the toner.
The heat roller fixing method is suitable for high-speed operation because the entire heat roller is maintained at a predetermined temperature during operation, but has a drawback that the waiting time at the start of operation is long. That is, since a time is required to heat the heat roller to a predetermined temperature at the start of the operation of the apparatus, a relatively long waiting time occurs between the time when the power is turned on and the time when the apparatus becomes operable. In addition, since the entire heat roller must be heated, power consumption is large.

Therefore, in recent years, as shown in FIG. 2, a fixing method has been proposed in which the toner on the transfer paper is heated by a heater via a thin tube-shaped endless belt. In this endless belt fixing method, the fixing belt 6 and the rubber roller 10 are pressed against each other, and the toner image 8 is
Is passed through the transfer paper 9 on which the
The toner is heated and fused to fix the toner. In this fixing method, only through a thin film-like belt 6,
Since the toner is heated substantially directly by the heater 7,
The heating unit reaches the predetermined temperature in a short time, and the waiting time at the time of turning on the power becomes almost zero. Further, in this fixing method, since only a portion necessary for fixing is heated, there is an advantage that power consumption is smaller as compared with the heat roller fixing method.

Conventionally, as a fixing belt used in the endless belt fixing method, heat resistance, elasticity, strength, insulation properties of the inner surface of the belt, and releasability of the outer surface of the belt are taken into consideration.
An endless belt made of polyimide (that is, a polyimide tube) provided with a fluororesin coating layer as a release layer on the outer surface is used. Such a fixing belt is mainly used in a monochrome laser beam printer that fixes only a single color toner containing carbon black as a colorant.

On the other hand, in a full-color image forming apparatus such as a full-color laser beam printer, generally,
Four color toners of red, yellow, blue and black are used. To fix a full-color toner image, unlike a single-color toner in which the toner is simply softened and fixed while applying pressure, multiple types of color toners are mixed in a state close to melting, so the toner must be melted. Is required.
However, when a conventional fixing belt is used for the fixing section of a full-color laser beam printer, the elasticity of the belt surface is insufficient, so that the color toner cannot be sufficiently wrapped, and as a result, a plurality of It was difficult to mix colors of the various color toners in a molten state, and satisfactory fixing could not be performed.

In order to impart sufficient elasticity to the surface of the fixing belt, for example, it is conceivable to form an elastic layer made of a heat-resistant elastomer such as silicone rubber on the outer surface of the polyimide tube. Further, in order to enhance the releasability of the toner, a release layer may be formed on the elastic layer. The release layer may be formed using a fluororesin or fluororubber having excellent release properties, or a silicone rubber having different properties may be shared by the functions of elasticity and release properties. Layer. However, the biggest problem of the fixing belt having such a laminated structure is that the interlayer adhesion between the elastic layer and the release layer is small, and the durability is not sufficient. If the durability of the fixing belt is insufficient, the frequency of replacing the fixing belt of a copying machine or the like increases, and the maintenance cost of the apparatus increases. It is difficult to overcome the above-mentioned problems even if the conventional technology regarding the fixing roller is applied to the fixing belt.

That is, conventionally, as a fixing roller for a full-color image, an HTV type (high-temperature curing type) silicone rubber is used as an elastic layer, and a separation rubber such as a fluoro rubber or an RTV type (room temperature curing type) silicone rubber is formed thereon. It is known to have a structure in which mold layers are sequentially laminated. However, since each layer is formed by bonding different materials of difficult-to-bond materials, it is difficult to increase the adhesive strength, and at most several tens g / g. c
m was obtained. For this reason, in the conventional fixing roller for a full-color copying machine, delamination has occurred due to copying about 20,000 sheets of A4 paper or copying OHP paper. Also,
Conventional fixing rollers for high-speed monochrome images have a structure in which a silicone rubber is used as an elastic layer and a release layer made of a fluororesin is laminated on the elastic layer. Due to the adhesion between the materials, it was difficult to increase the adhesive strength, and only a peel strength of about several tens g / cm was obtained.

[0009] JP-B-7-19104 and JP-B-7-19104
Japanese Patent Application Laid-Open No.-78659 discloses a method in which an inorganic filler having a size of 0.5 to 15 μm is dispersed and mixed in silicone rubber of an elastic layer of a fixing roller, and a hole is formed by removing the inorganic filler on the surface during polishing of the elastic layer. After that, a method of improving the interlayer adhesion by laminating a release layer thereon has been proposed. However, when such an inorganic filler having such a small particle diameter is used, since unevenness having a size necessary for improving the adhesive force between the elastic layer and the release layer is not formed, the peel strength between the layers is low, A maximum peel strength of about one hundred and several tens g / cm is obtained. Therefore, this method is not sufficient for physically bonding both layers firmly.

[0010]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a fixing belt in which at least two layers, an elastic layer and a release layer, are formed in this order on a tubular base material. It is an object of the present invention to provide a fixing belt excellent in durability and excellent in durability, and a method for producing the same. The present inventors have conducted intensive studies to overcome the problems of the prior art, and as a result, found that the heat-resistant elastomer has an average particle diameter of 20 to 1
An elastic layer is formed from an elastomer composition in which lump particles of 00 μm are dispersed, and then the lump particles on the surface of the elastic layer are removed to form a hole, and then a release layer is formed thereon, thereby providing an anchor effect. Has been remarkably improved, and the interlayer adhesion has become stronger, so that a fixing belt having excellent durability can be obtained. The removal of the aggregated particles on the surface of the elastic layer can be performed by a polishing treatment.However, when a water-soluble particle or a sublimable surfactant is used as the aggregated particles, the aggregated particles are dissolved in water, or by sublimation by heating, The holes can be effectively formed. In this way, when the release layer is formed on the elastic layer having a large number of holes formed on the surface, the interface between the two is brought into close contact with a fine uneven structure,
Thereby, the interlayer adhesion is significantly increased. The present invention has been completed based on these findings.

[0011]

According to the present invention, an elastic layer made of a heat-resistant elastomer is formed on a tubular substrate, and a silicone rubber, a fluoro rubber, and a fluoro resin are formed on the elastic layer. A fixing belt on which at least one release layer selected from the group consisting of: is formed, wherein the elastic layer has an average particle diameter of 20 in the heat-resistant elastomer.
Fine particles are formed at the interface between the elastic layer and the release layer by forming a hole by removing the massive particles on the surface of the elastic layer, which is formed from the elastomer composition in which the massive particles of about 100 μm are dispersed. A fixing belt is provided. According to the present invention, the heat-resistant elastomer has an average particle size of 2 on the tubular base material.
After forming an elastic layer made of an elastomer composition in which massive particles of 0 to 100 μm are dispersed, and then removing the massive particles on the surface of the elastic layer to form pores, a silicone rubber, a fluorine rubber, and A method for producing a fixing belt is provided, wherein a release layer made of at least one selected from the group consisting of fluororesins is formed.

Preferred embodiments of the invention relating to the fixing belt are as follows. (1) JIS B-060 is provided at the interface between the elastic layer and the release layer.
Maximum height (Rmax) specified in 1 is 15 to 80 μm
The fixing belt as described above, wherein the fine irregularities are formed. (2) The fixing belt described above, wherein the average particle diameter of the aggregated particles is 20 to 50 μm. (3) The fixing belt as described above, wherein the elastomer composition contains lump particles in a ratio of 10 to 40% by volume. (4) The fixing belt as described above, wherein the aggregated particles are at least one selected from the group consisting of inorganic fillers, water-soluble particles, and sublimable surfactants. (5) The fourth filler, wherein the inorganic filler is at least one selected from the group consisting of boron nitride, silica, and alumina.
The fixing belt according to the above item. (6) The fixing belt according to (4), wherein the water-soluble particles are at least one selected from the group consisting of sodium chloride and calcium carbonate. (7) The fixing belt according to (4), wherein the sublimable surfactant is a compound having a sublimation point of 100 ° C. or higher. (8) The fixing belt described above, wherein the heat-resistant elastomer is at least one selected from the group consisting of silicone rubber, fluorine rubber, and silicone rubber-ethylene propylene rubber copolymer. (9) The fixing belt according to (8), wherein the silicone rubber is at least one selected from the group consisting of fluorosilicone rubber and methylphenylsilicone rubber. (10) The fixing belt described above, wherein the release layer is formed of at least one selected from the group consisting of fluorosilicone rubber and methylphenylsilicone rubber. (11) The fixing belt as described above, wherein the release layer is formed from RTV type silicone rubber. (12) The fixing belt described above, wherein the release layer is formed of a fluororesin.

A preferred embodiment of the invention relating to the fixing belt is as follows. (1) The method for producing a fixing belt described above, wherein the aggregated particles are at least one selected from the group consisting of inorganic fillers, water-soluble particles, and sublimable surfactants. (2) The average particle size of the heat-resistant elastomer is 20 to 100.
The above-mentioned method for producing a fixing belt, wherein an elastic layer is formed from an elastomer composition in which lump particles of μm are dispersed, and then a polishing process is performed to remove lump particles on the surface of the elastic layer to form holes. (3) The method for producing a fixing belt as described above, wherein after the polishing treatment of the surface of the elastic layer, the water-soluble particles are dissolved in water or a sublimable surfactant is sublimated to remove these particles.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION The fixing belt of the present invention has an elastic layer made of an elastomer composition containing a heat-resistant elastomer and lumped particles formed on a tubular substrate such as a heat-resistant plastic tube or a metal tube. Further, it has a laminated structure in which a release layer made of at least one selected from the group consisting of silicone rubber, fluoro rubber and fluoro resin is formed thereon. After removing the aggregated particles on the surface of the elastic layer by polishing or the like to form a hole, a release layer is formed thereon. An additional layer such as a primer-treated layer may be present as long as the object of the present invention is not impaired.

The inner elastic layer is usually made of a heat-resistant elastomer such as silicone rubber, fluorine rubber, silicone rubber-ethylene propylene rubber copolymer, or a mixture of two or more thereof. The heat-resistant elastomer has a heat resistance such that when formed on a fixing belt, the heat-resistant elastomer can withstand continuous use at a fixing temperature. As the heat-resistant elastomer, silicone rubber, fluorine rubber, or a mixture thereof is preferable because heat resistance is particularly excellent.

As the silicone rubber forming the elastic layer, a millable HTV type (high temperature curing type) silicone rubber is usually used. Examples of such silicone rubber include dimethyl silicone rubber, fluorosilicone rubber, and methylphenyl silicone rubber. From the viewpoint of oil resistance, it is preferable to use fluorosilicone rubber or methylphenylsilicone rubber alone or in combination among silicone rubbers.

The thickness of the elastic layer is appropriately set in consideration of the purpose, the structure of the mechanical device to be installed, the target elasticity, the height of the material used, and the like, but is generally set in the range of 100 μm to 3 mm. Often. Of course, after forming into a thicker film, it may be processed to a required film thickness by polishing or the like. The elastic layer may be laminated on a tubular substrate via a primer, and the substrate is blasted, electrochemically etched, chemically etched, or roughened by a method combining them, Further, they may be laminated via a primer if necessary.

The outer release layer is formed using silicone rubber, fluoro rubber, fluoro resin, or a mixture of two or more of these (eg, a mixture of silicone rubber and fluoro rubber). From the viewpoint of, it is preferable to use silicone rubber or fluororesin. As the silicone rubber of the release layer, HTV (high temperature curing type), LT
Either V (low temperature curing type) or RTV (room temperature curing type) may be used, but RTV type silicone rubber is particularly preferred in that a smooth surface is obtained and a good fixed image is obtained. As the chemical structure of silicone rubber, there are dimethyl silicone, fluorosilicone, methylphenylsilicone, etc., and any of them may be used.In particular, fluorosilicone or methylphenylsilicone alone is used to impart oil resistance and high durability. It is preferable to use them or to use both in combination.

As the fluororesin of the release layer, polytetrafluoroethylene (PTFE), tetrafluoroethylene / perfluoroalkyl vinyl ether copolymer (P
FA), tetrafluoroethylene / hexafluoropropylene copolymer (FEP), ethylene / tetrafluoroethylene copolymer (ETFE), polychlorotrifluoroethylene (PCTFE), ethylene / chlorotrifluoroethylene copolymer (ECTFE) , Polyvinylidene fluoride (PVDF), etc., and these may be used as a mixture of two or more. These materials may be any of dispersion, powder, and the like, and may be formed into a tube or the like. Among the fluororesins, any one of PTFE, PFA, and FEP, or a mixture of two or more of them is more preferably used from the viewpoint of heat resistance and releasability (non-staining property, non-adhesiveness).

The thickness of the release layer is appropriately set in consideration of the intended use, the structure of the machine to be installed, the target elasticity, the hardness of the material to be used, the hardness of the elastic layer, the wear durability, and the like. Is set to 5 to 300 μm. The present invention is characterized in that holes (irregularities) having a size of 15 to 80 μm that exert an anchor effect are uniformly formed at the interface between the inner elastic layer and the outer release layer. The size of the hole (unevenness) is defined by the maximum height (Rmax) specified in JIS B-0601. In order to form such pores, an elastic layer is formed using an elastomer composition in which massive particles having an average particle diameter of 20 to 100 μm, preferably 20 to 50 μm are kneaded into a heat-resistant elastomer. Then, by removing the massive particles from the surface of the elastic layer during polishing, the surface of the elastic layer is cut off, and an octopus-shaped hole is formed. In the case of scaly particles, such octopus-shaped holes are not formed. As the bulk particles to be removed during polishing, an inorganic filler is preferable,
Above all, boron nitride particles have slidability, so that they easily fall off during polishing and holes are easily formed. The average particle diameter of the agglomerated particles was determined by a mode average value of the area-based distribution using a UV light scattering type particle size distribution analyzer SALD-1100 manufactured by Shimadzu Corporation.

When water-soluble particles are used as the aggregated particles, after polishing, the particles are dissolved in water from the surface of the elastic layer, thereby forming more complicated octopus-shaped fine irregularities. As the water-soluble particles, sodium chloride and calcium carbonate are preferable, and for water-soluble particles aggregated by hydration,
It is preferable to pulverize, dry and knead the rubber of the elastic layer. When a sublimable surfactant is used as the aggregated particles, pores can be formed by heating the elastic layer and sublimating the particles. In this case, the surfactant is sublimated during press molding of the elastic layer, but is preferably a surfactant having a sublimation temperature in the range of 100 to 200 ° C. so as not to foam in the mold.

Further, the inorganic filler, water-soluble particles and sublimable surfactant shown here may be kneaded independently. However, by using a mixture of two or more of these, more complicated unevenness is formed on the surface of the elastic layer, and it can be expected that the physical adhesion to the release layer is improved. The amount of the lumpy particles kneaded into the elastic layer is preferably in the range of 10 to 40% by volume. If it is less than 10% by volume, the number of holes formed on the inner layer surface is small, and the anchor effect cannot be sufficiently exhibited. On the other hand, when the content is more than 40% by volume, the strength of the rubber of the elastic layer is significantly reduced, and the durability is reduced. When the release layer as the outer layer is coated on the inner elastic layer having the holes formed in this way, the outer layer cuts into the unevenness of the inner layer surface,
Strong interlayer adhesion is obtained.

A tube (that is, an endless belt) is used as a base material of the fixing belt of the present invention. As a material of the tube, a heat-resistant plastic or metal is usually used. As the heat resistant plastic, for example, polyimide, polyamide imide, polyether ether ketone, polyphenylene sulfide, polybenzimidazole and the like are used, and among them, polyimide is particularly preferable. As the metal tube, for example, aluminum, stainless steel, iron, nickel, and alloys thereof are used.When considering heating the metal tube by an electromagnetic induction heating method, iron, nickel, and alloys thereof, or Ferritic stainless steel is preferred.
When the electromagnetic induction heating method is adopted, an electromagnetic induction heating coil such as a high-frequency coil is provided instead of the heater. The thickness of the tubular substrate is usually 10 to 100 μm,
Preferably it is 30 to 60 μm.

The outer diameter of the tubular base material or the fixing belt can be appropriately determined depending on the size of the fixing device and the like, but is usually 15 to 150 mm, preferably 20 to 1 mm.
It is about 00 mm. The length of the fixing belt can be appropriately determined according to the width of a transfer material such as transfer paper. FIG.
FIG. 1 shows an example of the fixing belt of the present invention. An elastic layer 12 is formed on a tubular substrate 11, and a release layer 13 is further formed thereon.

[0025]

The present invention will be described more specifically below with reference to examples and comparative examples.

Example 1 A polyimide tube having a thickness of 50 μm and an outer diameter of 27.6 mm was prepared using a polyimide varnish (U Varnish S manufactured by Ube Industries, Ltd.) and a cylindrical mold according to a conventional method. An inner layer elastomer (elastic layer) having a thickness of 2 mm is coated on this tube, and a thickness of 20 mm is formed thereon.
A structure coated with an outer layer rubber or outer layer resin (release layer) of 0 μm was produced. First, a primer (Primer X-93-80 manufactured by Shin-Etsu Chemical Co., Ltd.) was placed on a polyimide tube.
5) was brushed and dried at 80 ° C. for 30 minutes. As the elastomer for the elastic layer, filler particles were kneaded into each of the raw rubbers shown in Tables 1 and 2, and 0.5 part by weight of a peroxide vulcanizing agent (C-8A manufactured by Shin-Etsu Chemical) was kneaded.
A sheet obtained by sheeting the elastomer for an elastic layer to a thickness of about 4 mm was wound around a polyimide tube, press-molded with a mold, and covered with a thickness of 3 mm. The pressing temperature was 160 ° C. and the pressing time was 60 minutes. Then
The surface of the coated elastic layer was uniformly polished with a rotary grindstone to a thickness of 2 mm.

In Tables 1 and 2, the water-soluble particles mixed with the elastomer for the elastic layer were immersed in water at 60 ° C. for 6 hours after polishing, and then dried at 100 ° C. for 30 minutes.
In this way, holes having the sizes shown in Tables 1 and 2 were formed on the surface of the elastic layer. On top of this, as a release layer which is an outer layer,
Rubber or fluorine resin having the composition shown in Tables 1 and 2 was coated. The coating thickness was 200 μm. In the case of silicone rubber, a polyimide tube having an elastic layer was immersed in liquid RTV silicone rubber, then slowly pulled up and applied, and heat-treated at 120 ° C. for 1 hour and at 180 ° C. for 1 hour. The fluororesin was applied by spraying an aqueous dispersion of EK4300CR manufactured by Daikin Industries, Ltd., and heat-treated at 100 ° C. for 30 minutes and 380 ° C. for 15 minutes.

Measurement of Interlayer Adhesion The adhesion between the inner layer and the outer layer of the thus completed fixing belt was measured. Specifically, as shown in FIG.
3 was peeled off, attached to a clamp 15 of a tensile tester, peeled off at a speed of 50 mm / min, and a 180 ° peel strength (adhesive strength) was measured. As a result, as shown in Tables 1 and 2, it can be seen that in the samples in which the holes were formed in the elastic layer, the adhesive force was significantly improved. As shown in FIG. 4, the fixing belt for the durability test was mounted on a rotation durability test device simulating actual fixing and rotated. A silicone oil (dimethyl silicone oil KF96H manufactured by Shin-Etsu Chemical Co., Ltd.) was applied to the fixing belt 17 via the web 16. During the rotation endurance test, the output of the halogen heater 19 inserted inside the hollow fixing belt was controlled so that the surface temperature of the fixing belt 17 became constant at 180 ° C.
The fixing belt 17 was rotated while being in contact with the pressing roller 18. When the time required for the outer layer to separate from the inner layer was measured using this rotation durability tester, it was found that the durability time was significantly extended in each example.

[0029]

[Table 1]

[0030]

[Table 2]

(Footnote) * HTV dimethyl silicone: KE931 manufactured by Shin-Etsu Chemical Co., Ltd.
U * HTV fluorosilicone: FE241U manufactured by Shin-Etsu Chemical Co., Ltd. * HTV methylphenyli silicone: KE manufactured by Shin-Etsu Chemical Co., Ltd.
7016U * RTV dimethyl silicone: KE193 manufactured by Shin-Etsu Chemical Co., Ltd.
5 * RTV fluorosilicone: FE61 manufactured by Shin-Etsu Chemical Co., Ltd. * Sublimable surfactant: Florard FC-1 manufactured by Sumitomo 3M
43 <Rotation endurance time> A: The release layer does not peel off even after 1000 hours or more. ：: The release layer peels off in 500 hours or more and less than 1000 hours. X: The release layer peels off in less than 500 hours. <Brittleness> ：: The inner elastic layer is brittle. X: The inner elastic layer is not brittle.

[0032]

According to the present invention, the interlayer adhesion between the elastic layer and the release layer is remarkably increased, so that the durability of the elastic fixing belt can be remarkably improved. The fixing belt of the present invention can be suitably used for a fixing unit such as a model capable of outputting a monochrome image at a particularly high speed, such as an electrophotographic copying machine, a laser beam printer, and a facsimile, or a model capable of outputting a partial color or full color image. it can.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of a heat roller fixing method.

FIG. 2 is an explanatory diagram of a fixing method using an endless belt (fixing belt).

FIG. 3 is a view showing a lamination structure of a fixing belt of the present invention and a method for measuring an interlayer adhesive force.

FIG. 4 is a schematic view of a rotation durability tester.

[Explanation of symbols]

 1: Fixing roller 2: Heater 3: Toner 4: Transfer paper 5: Pressing roller 6: Fixing belt 7: Heater 8: Toner 9: Transfer paper 10: Pressing roller 11: Tubular substrate 12: Elastic layer 13: Release layer 14: Release part of release layer 15: Clamp 16: Web 17: Fixing belt 18: Pressure roller 19: Halogen lamp heater

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Toshihiko Takiguchi 1-3-1 Shimaya, Konohana-ku, Osaka-shi, Osaka Sumitomo Electric Industries, Ltd. Osaka Works

Claims (6)

[Claims] 1. An elastic layer made of a heat-resistant elastomer is formed on a tubular base material, and a separation layer made of at least one selected from the group consisting of silicone rubber, fluororubber, and fluororesin is formed on the elastic layer. A fixing belt on which a mold layer is formed, wherein the elastic layer is formed from an elastomer composition in which massive particles having an average particle diameter of 20 to 100 μm are dispersed in a heat-resistant elastomer, and the massive particles are formed on the surface of the elastic layer. A fixing belt, wherein fine irregularities are formed at an interface between the elastic layer and the release layer by forming holes by removing the toner. 2. The method according to JIS B, wherein an interface between the elastic layer and the release layer is provided.
The maximum height (Rmax) specified in −0601 is 15 to
2. The fixing belt according to claim 1, wherein minute irregularities of 80 [mu] m are formed. 3. An average particle diameter of the massive particles is 20 to 50 μm.
The fixing belt according to claim 1, wherein 4. The elastic layer contains 10 to 40% by volume of massive particles.
The fixing belt according to claim 1, wherein the fixing belt is formed from an elastomer composition containing at a ratio of: 5. The fixing belt according to claim 1, wherein the heat-resistant elastomer is at least one selected from the group consisting of silicone rubber and fluorine rubber. 6. An elastic layer composed of an elastomer composition in which massive particles having an average particle diameter of 20 to 100 μm are dispersed in a heat-resistant elastomer on a tubular substrate, and then the massive particles on the surface of the elastic layer are removed. After removing and forming a hole,
A method for producing a fixing belt, further comprising forming a release layer made of at least one selected from the group consisting of silicone rubber, fluororubber, and fluororesin.