JPH0643796A - Cleaning blade for electrophotographic copying machine and its production and cleaning device having this cleaning blade - Google Patents

Abstract

PURPOSE:To provide the cleaning blade having excellent durability and cleaning performance by adhering a blade surface stuck with a release agent and a metallic fixture with high positional accuracy. CONSTITUTION:This cleaning blade 3 for an electrophotographic copying machine is constituted by adhering a release agent adhered surface 5 of the blade for removing the unnecessary toners on a photosensitive body of the electrophotographic copying machine and the metallic fixture 2 for mounting the blade 3 to the body of the electrophotographic copying machine by an adhesive layer which reacts and cures after solidifying at room temp. This process for production is for this cleaning blade and this cleaning device has such cleaning blade.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cleaning blade for an electrophotographic copying machine, a method for manufacturing the same, and a cleaning device equipped with the cleaning blade.

[0002]

2. Description of the Related Art An electrophotographic copying machine has a photoconductor having a photoconductor layer on its surface. During copying, the outer peripheral surface of the photoconductor is uniformly charged, and then the outer peripheral surface is exposed through the copy image of the copy object to form an electrostatic latent image on the outer peripheral surface. It Toner is attached to the electrostatic latent image to form a toner image, and the toner image is transferred to a copy paper or the like to perform copying.

After the copying, since a part of the toner remains on the outer periphery of the photosensitive member, it is necessary to remove this residual toner. This removal is performed, for example, by a cleaning blade as shown in FIG. In FIG. 1, 1 is a cleaning blade, 2 is a mounting bracket, 3 is a blade, and 4 is an adhesive layer for mounting the blade 3 on the mounting bracket 2.

As a method for fixing the blade 3 to the mounting member 2, for example, a method using an adhesive tape (Japanese Patent Laid-Open No. 61-13097).
5), a method using an instant adhesive (Japanese Patent Laid-Open No. 63-269188)
No. 6), a method using a hot melt adhesive (JP-A-61-1).
45578), and in recent years, curing an adhesive mainly composed of a mixture of unsaturated polyurethane resins having two or more polymerizable ethylenically unsaturated groups at the terminals by irradiation with radiation and / or heat. A method of bonding has also been proposed. (JP-A 1-129282).

However, the method using the adhesive tape is
Although high-accuracy initial fixing can be easily performed, the adhesive strength between the mounting bracket and the blade is small, and the adhesive strength is reduced particularly at high temperatures, which causes a problem in cleaning performance. Also,
The method using the instant adhesive has the same problem as in the case of the pressure-sensitive adhesive tape, and also has the problem of poor impact resistance and durability. Further, in the method using a hot melt adhesive, adhesion and fixing can be easily performed, and the adhesive force is larger than that of the instant adhesive, but the adhesive force has a large temperature dependency. Furthermore, since it is necessary to perform pressure fusion at a high temperature (130 to 180 ° C.), the blade may be deformed or deteriorated, and there is a problem that distortion occurs due to thermal contraction during cooling. Further, in the case of a method using an adhesive containing a mixture of unsaturated polyurethane resins as a main component, the curing rate varies depending on the amount of oxygen present because the curing is performed by a radical reaction, and the performance of the obtained cleaning blade tends to vary. There is a problem.

By the way, the blade is made by cutting a urethane elastomer sheet into a predetermined size. A urethane elastomer sheet is usually molded with a mold release agent applied to the mold surface at the time of molding, but since this mold release agent is impregnated in the urethane elastomer sheet, it can be completely wiped off with a solvent such as trichloroethylene. However, the release agent always remains on the blade. When the mold release agent remains on the blade, the mounting metal fitting is not sufficiently adhered by the adhesive, so that the blade is bonded to the mounting metal fitting on the surface on which the mold release agent is not adhered.

Generally, there are four types of embodiments of the cleaning blade in which a mounting member is attached to the blade as shown in FIGS.

In FIGS. 2 to 5, reference numeral 5 denotes a release agent adhering surface,
Reference numeral 6 indicates a photosensitive drum, and arrows indicate the rotation direction of the drum.

A mode in which the mounting member 2 is adhered to the surface on which the release agent is not adhered is shown in FIGS. 3 and 4, and a mode in which the mounting member 2 is adhered to the surface to which the release agent is adhered is shown in FIG. And 5
Shown in. As is clear from these figures, in the embodiment shown in FIGS. 3 and 4, the blade 3 pressed against the surface of the photosensitive drum 6 is applied with a force in a direction of peeling from the mounting member 2. On the other hand, in the case of the embodiment shown in FIGS. 2 and 5, the force applied to the blade 3 is directed in the direction of the mounting member 2, that is, in the direction opposite to the peeling. Therefore, in order to obtain stable cleaning property,
In the case of the embodiment shown in FIG.

[0010]

SUMMARY OF THE INVENTION Therefore, the present invention has been made in order to solve the problems of the conventional method in the cleaning blade for an electrophotographic copying machine, and it is intended that the release agent-adhering surface of the blade and the mounting metal member are attached to each other. A cleaning blade for an electrophotographic copying machine, which has a high accuracy in adhesive fixing, and has sufficient adhesive strength, heat resistance, and durable cleaning performance, a method for manufacturing the same, and a cleaning device for an electrophotographic copying machine equipped with the cleaning blade. The purpose is to provide.

[0011]

SUMMARY OF THE INVENTION According to the present invention, a release agent adhering surface of a blade for removing unnecessary toner on a photoconductor of an electrophotographic copying machine, and for attaching the blade to the main body of the electrophotographic copying machine. The mounting bracket of No. 1 is attached to the cleaning blade for an electrophotographic copying machine, which is adhered by an adhesive layer which is hardened after solidification at room temperature.

The present invention also provides a release agent-adhering surface of a blade for removing unnecessary toner on a photoreceptor of an electrophotographic copying machine,
A cleaning device for an electrophotographic copying machine, comprising a mounting blade for mounting the blade to the main body of the electrophotographic copying machine, and a cleaning blade for the electrophotographic copying machine, wherein the cleaning blade is attached to the main body of the electrophotographic copying machine with an adhesive layer that hardens at room temperature and is then cured.

The present invention also provides a release agent-adhering surface of a blade for removing unnecessary toner on a photoreceptor of an electrophotographic copying machine,
The present invention relates to a method for producing a cleaning blade for an electrophotographic copying machine, characterized in that the mounting metal fitting for attaching the blade to the main body of the electrophotographic copying machine is solidified at room temperature and then adhered with an adhesive layer which is cured by reaction.

[0014]

OPERATION AND EXAMPLES The cleaning blade for an electrophotographic copying machine according to the present invention is constructed such that the surface of the blade on which the mold release agent is adhered is integrated with the mounting bracket by an adhesive which is hardened at room temperature and then cured by reaction. It has been made into.

The blade used in the present invention is a polyurethane elastomer conventionally used for cleaning blades (for example, polyester polyol as polyol, 4,4'-isocyanate as isocyanate).
A blade made of diphenylmethane diisocyanate, which uses an alcohol-based curing agent, or the like. A blade made of such a polyurethane elastomer has excellent wear resistance and mechanical strength.

Further, as will be described later, when an ultraviolet curable adhesive or the like is used, it is preferable to use a blade having a thickness that is transparent and transmits ultraviolet rays.

The polyurethane elastomer can be molded by generally mixing a prepolymer obtained by reacting a polyol with an isocyanate with a curing agent and heating and curing the mixture with a centrifugal molding machine. During molding, a mold release agent is applied in advance in the mold to prevent the molded body and the mold from adhering to each other and to facilitate mold release. In addition, since the release agent is attached to the surface of the obtained molded body which is in contact with the mold, it cannot be completely removed even if it is wiped with a solvent such as trichlorethylene. As the release agent, a wax-based release agent, a fluorine-based release agent, a silicone-based release agent or the like is usually used.

Examples of the mounting metal fittings used in the present invention include mounting metal fittings generally used for cleaning blades and the like and made of various metals, plastics, ceramics, etc., but untreated steel plates, zinc phosphate treatment and chromate. A mounting bracket made of steel plate that has been subjected to surface treatment such as treatment, or other plated steel plate,
It is preferable from the viewpoint of changes with time, particularly corrosiveness.

The adhesive used in the adhesive layer in the present invention melts at about 65 ° C. or lower and solidifies when cooled to about 50 to 60 ° C., but immediately after solidification, the crosslinking reaction only causes softening again when heated. It does not occur, the crosslinking reaction proceeds at 30 ° C for 6 to 24 hours and shows sufficient adhesive strength at room temperature, and the crosslinking reaction proceeds further if left for 24 to 48 hours and softens even if heated. It does not have heat resistance.

The adhesive is (A) a base polymer (A1) used in a usual hot melt adhesive, to which a compound (A2) having a crosslinking reactivity is added, and (B) a reactive group. A base polymer having C or a base polymer having no reactive group (C) and having a crosslinkable reactive group introduced therein is used.

As the base polymer (A1) for the reactive hot melt adhesive in the adhesive of the type (A),
Generally, ethylene-vinyl acetate based polyolefins such as low density polyethylene and atactic polypropylene, such as styrene-isoprene-styrene (S
IS), styrene-butadiene-styrene (SBS),
Styrene-ethylene-butadiene-styrene (SEB
S) and other block copolymer polymers, butyl rubber,
For example, a polyurethane-based polymer such as a polyurethane prepolymer which is a reaction product of an ester-based polyol having a melting point of about 50 to 60 ° C. and an isocyanate, a commercially available product such as Hibon 4832, 4830, 4820, 4860 manufactured by Hitachi Chemical Co., Ltd. For example, polyamide based dimer acid as a main component,
Examples thereof include polyester resins such as Toyobo Co., Ltd.'s polyester resins (trade name "Byron" series) and nylon resins.

Examples of the compound (A2) having a crosslinking reactivity include a urethane prepolymer which is crosslinked by moisture and a styrene-ethylene-butadiene-styrene copolymer (SE which is a base polymer having a hot melt property).
(BS) a hydrolyzable organic silane compound such as a compound having a hydrolyzable silane group introduced therein, polyester having an acrylic double bond at both ends which can be cured by irradiation with ultraviolet rays or electron beams, polyurethane, epoxy A compound or the like is used.

More specifically, in the case of curing with moisture,
Polyurethane prepolymers, which are reaction products of methylene diisocyanate, hydrogenated methylene diisocyanate, tolylene diisocyanate and the like and their polyols, compounds in which —Si (OR) ₃ (R represents an alkyl group) is introduced into the polymer, Examples of photocurable ones include acrylic ester monomers.

The compounding ratio of the compound (A2) having the crosslinking reactivity is usually in the range of 5 to 200 parts, preferably 50 to 50 parts with respect to 100 parts of the base polymer (A1) (parts by weight, the same applies below).
It is about 150 copies. If the compounding ratio of the compound having cross-linking reactivity exceeds the above range, the reaction-cured adhesive layer becomes too hard and the adhesive strength will be reduced, and if it is less than the above range, the cross-linking density will be too small and the heat resistance will tend to be poor. is there.

Base Polymer Having the Reactive Group
(B) is a polyurethane prepolymer having a reactive group such as isocyanate or a polymer in which an alkoxysilane is introduced at the end of polypropylene glycol.The former is obtained by reacting an isocyanate with a polyol in the same manner as a normal polyurethane prepolymer. The latter is obtained by the reaction of polypropylene glycol with an alkoxysilane compound.

Specific examples of the polyurethane prepolymer include polyester-based ones, and silane compounds such as "Cyryl" manufactured by Kanegafuchi Chemical Industry Co., Ltd.

The one having a crosslinkable reactive group introduced into the above-mentioned base polymer having no reactive group (C) has an alkoxysilane or the like as a crosslinkable reactive group in the base polymer used in the above hot-melt adhesive. It was introduced,
To introduce these groups, for example, ethylene-vinyl acetate copolymer or styrene-ethylene-butadiene
-A method such as graft-polymerizing vinylethoxysilane onto a styrene copolymer is used.

The amount of the crosslinkable reactive group to be introduced varies depending on the reactivity of the crosslinkable reactive group, but is generally preferably about 1 to 20%.

The softening point of the adhesive used in the present invention varies depending on the type of the base polymer, the compound having a cross-linking reactivity to be added, etc., but it is preferably 120 ° C. or less, more preferably 50 It is about 120 ℃. If the softening point exceeds such a range, the blade that is an elastic member may be deformed by heating, and if it is lower than such a range, it becomes difficult to solidify at room temperature, and the accuracy of the position of the blade on the mounting bracket is reduced. High fixation tends to be difficult.

It is desirable that the adhesive be an elastic body that exhibits the same flexibility as the blade material when a crosslinking reaction occurs.

The adhesive layer used in the present invention is a mixture of two or more adhesives as long as it does not impair the property of being cured and cured at room temperature when the blade and the fitting are adhered. However, a plurality of layers may be laminated and adhered. When two or more kinds of adhesives are mixed and used, at least one kind is selected from the above-mentioned adhesives (A), (B) and (C), and the other is selected from any kind of adhesives. It does not matter even if it is done. However, 2
In the case of laminating multiple layers or more, the adhesive layer that is in direct contact with the release agent-attached surface of the blade contains one of the three types of adhesives (A), (B) and (C) above. It is necessary to have

When two or more kinds of the adhesive components are mixed and used, a suitable design for both adherends can be obtained by mixing the adhesive components having good adhesiveness to the adherends of the blade and the fitting. It is possible, and when it is made into a mixture, it becomes one agent and becomes a simple system.

Further, when a plurality of layers are laminated and adhered, a strong adhesive force can be obtained by setting an adhesive component having good adhesiveness to both adherends.

If necessary, the adhesive may be blended with other components usually used in hot melt adhesives, such as tackifier, wax, plasticizer, filler and antioxidant.

The mixing ratio of the other components is 10
It is usually about 1 to 100 parts with respect to 0 parts.

In order to bond the blade and the fitting to each other, first, the adhesive is heated and melted at a softening point or higher and 120 ° C. or lower, and a roll coater or the like is used so that the bonding surface of the fitting has a uniform thickness. After applying the adhesive, apply the blade to the specified position before the adhesive solidifies by cooling and solidify, or cool it, or apply the adhesive to the mounting bracket and then solidify the adhesive by cooling, and then attach the blade. By heating and fusing again and then cooling and solidifying, it is possible to bond with an initial adhesive strength at room temperature comparable to that of a conventional hot melt adhesive. At this stage, that is, immediately after solidification, the crosslinking reaction proceeds only to such an extent that it is softened again by heating.

The thickness of the applied adhesive layer is preferably as thick as possible within the specifications of the product from the viewpoint of peel adhesive strength, and is preferably thin from the viewpoint of shear adhesive strength.
From this point of view, the thickness is usually preferably in the range of 10 to 100 μm.

It is preferable that the blade and the mounting member are bonded to each other by pressing them at a pressure of 1 to 5 kg / cm ² .

As the heating and fusing means, a hot plate, ultrasonic waves,
Means such as high frequency is appropriately selected and used. In addition, since the blade made of elastic material can be bonded with high precision without causing deformation due to heating, only the mounting bracket is heated (80 to 120 ° C), and the blade is not heated or forcedly cooled. The method is preferred.

In the case of an adhesive in which a crosslinking reaction proceeds due to moisture, when the adhesive is solidified at the initial adhesive strength, it is allowed to stand in air at 30 ° C. for about 6 to 24 hours. , The adhesive strength at room temperature is sufficient, about 24
When left to stand for ~ 48 hours, the crosslinking reaction proceeds and heat resistance does not soften even when heated.

Although the mechanism of the crosslinking reaction is not clear, for example, in the case of an adhesive containing an isocyanate compound, the isocyanate group in the adhesive reacts with moisture in the air to form an amine through a carbamide and reacts with another isocyanate group. By doing so, it is considered that the polyurethane has a three-dimensional structure and is changed from the thermoplastic polyurethane to the thermosetting polyurethane.

On the other hand, when an adhesive whose cross-linking reaction proceeds by irradiation with electron beams or ultraviolet rays is used, the adhered ones with initial adhesive strength are solidified and then heated by irradiation with electron beams or ultraviolet rays. Also has heat resistance that does not soften.

Before applying the adhesive to the mounting metal,
If necessary, the adhesive surface of the mounting bracket may be pre-treated with a primer.

Specific examples of the primer include urethane type, polyester type, silane type, polyamide type,
Examples thereof include those usually used for metals such as phenolic resins and silane coupling agents, and are appropriately selected according to the material of the adhesive used for adhesion to the blade.

When applying a primer, a brush,
Thickness using an applicator equipped with a sponge roller, etc.
It may be uniformly applied so as to have a thickness of about 10 to 100 μm and dried.

Since the cleaning blade of the present invention can be adhered at a lower temperature than the conventional cleaning blade using a hot melt adhesive, the influence of heat on the blade can be suppressed to a minimum and deformation can be prevented. Screeching
In addition, the position accuracy is high and the adhesive strength is sufficiently strong. Moreover, when an adhesive that cross-links due to moisture is used, after the blade is bonded and cooled, the cross-linking reaction can proceed without any special operation, so work efficiency is good, and the cross-linking adhesive Since the agent does not remelt even when heated, it has excellent heat resistance and durability.

The cleaning blade of the present invention is attached to the main body with a mounting bracket, and an edge of the cleaning blade is pressed against the surface of the photosensitive member to form a cleaning device for an electrophotographic copying machine in which excess toner on the surface is removed. .

For an electrophotographic copying machine equipped with the cleaning device, a high temperature (50
It has excellent durability even when it reaches ~ 60 ℃.

The present invention will be described below with reference to examples, but the present invention is not limited to these examples.

Examples 1 and 2 A fitting made of a phosphate-treated iron plate (manufactured by Shin Nippon Steel Co., Ltd., trade name: Bonde Steel Plate) was washed with a solvent (trichloroethylene).

Apply the adhesive shown in Table 1 to the adhesive surface of the mounting bracket.
It is melted by heating at 80 ℃ and the thickness is about 10 using a roll coater.
It was applied so as to have a thickness of 0 μm. Before the next applied adhesive solidifies, a 2 mm thick blade made of polyurethane elastomer with a hardness of JIS A of 78 degrees is released at a predetermined position on the adhesive surface of the mounting bracket applied with the adhesive. The surface to which the agent adhered was washed with a solvent (trichloroethylene), and then pressure-contacted at a pressure of about 1 kg / cm ² , cooled and solidified, the pressure was released, and the mixture was left at 30 ° C. and humidity 60% for 3 days.

The blade used here was manufactured by the following procedure.

Isocyanate (NCO) group content obtained by reacting polyester polyol with 4,4'-diphenylmethane diisocyanate: 6.2% (% by weight,
The same shall apply hereinafter) was mixed with 1,4-butanediol and trimethylolpropane as a cross-linking agent at a ratio of isocyanate (NCO) group / hydroxy acid (OH) group = 0.72.

After molding the mixed urethane material, it was left in an oven at 110 ° C. for 16 hours for after-curing. After that, it was aged for 4 days at room temperature and then cut into a predetermined size to obtain a urethane piece blade.

The abbreviations in Table 1 for the reactive urethane adhesive and the room temperature curing type epoxy adhesive used in the examples and the conventional adhesive used in the comparative examples are as follows.

A1: Polyurethane prepolymer, which is mainly composed of a polyurethane prepolymer composed of polyester polyol and isocyanate.

Hybon 4832 A2, trade name, manufactured by Hitachi Chemical Polymer Co., Ltd .: Polyurethane prepolymer, which mainly contains a polyurethane prepolymer composed of polyester polyol and isocyanate.

Hitachi Chemical Polymer Co., Ltd., trade name, Hibon 4830 A3: Polyurethane prepolymer, which is mainly composed of a polyurethane prepolymer consisting of polyester polyol and isocyanate.

Hitachi Chemical Polymer Co., Ltd., trade name, Hibon 4860 A4: Epoxy elastic adhesive (room temperature curing type) Epoxy compound and moisture curing type which is mainly composed of a polymer having an alkoxysilyl group at the end of polypropylene glycol. adhesive.

Product name, EP-00, manufactured by Cemedine Co., Ltd.
1 B: Cyanoacrylate instant adhesive Toa Gosei Chemical Co., Ltd., trade name, Aron Alpha-401 C: Double-sided adhesive tape Nitto Denko Co., Ltd., product number No. 500 D: Main component contains reactive groups Non-thermoplastic polyurethane elastomer-containing urethane hot-melt adhesive manufactured by Takeda Pharmaceutical Co., Ltd., trade name, Takemelt XM205
L The adhesive strength and durability of the cleaning blades obtained in Examples 1 and 2 were examined as follows.

[Adhesive Strength] In FIG. 6, the fitting 2 is fixed, the tip of the blade 3 is held by an air chuck and pulled in the direction of the arrow, and the 90 ° peel strength is 0 ° C., 25 ° C., 60 ° C.
Was measured in the atmosphere. The pulling speed was 30 mm / min.

[Durability] A commercially available dry plain paper electrophotographic copying machine was equipped with a cleaning blade, and the image was repeatedly copied at an ambient temperature of 25 ° C. or 50 ° C. to examine the life of the adhesive strength of the blade. The number of sheets that can be copied without black streaks due to poor cleaning was counted. The results are shown in Table 1.

Example 3 The same fittings and blades as in Example 1 were used, the adhesives shown in Table 1 were heated and melted at 80 ° C., and the thickness of each adherend surface was about 50 μm by a roll coater. It was applied so that Next, before the adhesive is solidified, the adhesives of the adherends are bonded together and pressure-bonded at about 1 kg / cm ² ,
The pressure was released after cooling. Other than that was performed like Example 1. The results are shown in Table 1.

Example 4 Example 4 was repeated except that the adhesives shown in Table 1 were used.

Here, the mixed adhesive was prepared by mixing predetermined materials at 60 ° C. The results are shown in Table 1.

Comparative Example 1 The same fittings and blades as those used in Example 1 were used, and the instant adhesives shown in Table 1 were applied to the fittings to a thickness of about 20 μm, and immediately thereafter. The surface of the blade to which the release agent was attached was attached, and the pressure was maintained at 3 kg / cm ² for 1 minute, and the adhesive strength and durability of the obtained cleaning blade were examined. The results are shown in Table 1.

Comparative Example 2 The same fittings and blades as in Example 1 were used.
Adhesive tape is attached to the mounting bracket, the release agent-attached surface of the blade is attached on top of it, and pressure is maintained at 3 kg / cm ² for 1 minute to check the adhesive strength and durability of the cleaning blade obtained. It was The results are shown in Table 1.

Comparative Example 3 The same fittings and blades as in Example 1 were used.
Hot melt adhesive shown in Table 1 (film, width 5 mm,
(Thickness 100 μm) is temporarily fixed to the adhesive surface of the mounting bracket, and the surface of the blade to which the release agent is attached is pasted onto it, and the pressure is maintained at 3 kg / cm ² for 1 minute. After heating for 1 minute, it was cooled. The adhesive strength and durability of the obtained cleaning blade were examined. The results are shown in Table 1.

[0069]

[Table 1]

From the results shown in Table 1, the cleaning blade of the present invention has a stronger adhesive force than the one obtained by the conventional method in adhering the blade on the side to which the release agent is attached and the mounting member. It can be seen that the durability, especially at high temperature, is superior to that of conventional products.

[0071]

According to the cleaning blade of the present invention, the blade surface on which the release agent is adhered and the mounting member are strongly bonded with high positional accuracy, and have excellent durability for cleaning. Further, the cleaning device equipped with the cleaning blade has excellent durability even in a high temperature environment due to speeding up and compactness.

[Brief description of drawings]

FIG. 1 is a perspective view of a cleaning blade.

FIG. 2 is a diagram of attaching a cleaning blade to a photosensitive drum.

FIG. 3 is a diagram of attaching a cleaning blade to a photosensitive drum.

FIG. 4 is a diagram of attaching a cleaning blade to a photosensitive drum.

FIG. 5 is a diagram of attaching a cleaning blade to a photosensitive drum.

FIG. 6 is an explanatory diagram of a method for testing the adhesive force between the blade and the mounting member.

[Explanation of symbols]

 1 Cleaning Blade 2 Mounting Bracket 3 Blade 4 Adhesive Layer 5 Release Agent Adhesive Surface

Claims (6)

[Claims] 1. A mold release agent adhering surface of a blade for removing unnecessary toner on a photoconductor of an electrophotographic copying machine, and a mounting bracket for mounting the blade to the main body of the electrophotographic copying machine at room temperature. A cleaning blade for an electrophotographic copying machine, which is adhered with an adhesive layer that is cured by reaction after solidification. 2. The adhesive layer according to claim 1, wherein the adhesive layer is solidified and cured at room temperature, the ethylene-vinyl acetate copolymer, the olefin polymer, the styrene-isoprene-styrene copolymer, the styrene-butadiene-styrene copolymer. , Styrene-ethylene-butadiene-styrene copolymer, 5 to 200 parts by weight of a moisture-curable urethane prepolymer based on 100 parts by weight of one or more kinds selected from the group consisting of butyl rubber, polyurethane, polyamide and polyester,
The electrophotographic copying machine according to claim 1, comprising an isocyanate compound, a hydrolyzable organic silane compound, and at least one compound selected from the group consisting of polyesters having an acrylic double bond at both ends, polyurethane, and an epoxy compound. Cleaning blade. 3. The adhesive layer according to claim 1, which comprises a plurality of adhesive layers which are solidified and cured at room temperature, and the adhesive layer which is in contact with the mounting member contains at least one kind of metal primer for surface modification. The cleaning blade for an electrophotographic copying machine according to claim 1 or 2, comprising: 4. The cleaning blade for an electrophotographic copying machine according to claim 1, wherein the blade according to claim 1 is made of a polyurethane elastomer. 5. The surface of the blade of the electrophotographic copying machine for removing unnecessary toner on the photoreceptor of the electrophotographic copying machine and the mounting metal member for mounting the blade on the main body of the electrophotographic copying machine react after solidifying at room temperature. A cleaning device equipped with a cleaning blade for an electrophotographic copying machine, which is adhered with a curing adhesive layer. 6. A reaction product after solidifying at room temperature a mold release agent adhering surface of a blade for removing unnecessary toner on a photoconductor of an electrophotographic copying machine and a mounting metal fitting for mounting the blade to the main body of the electrophotographic copying machine. A method of manufacturing a cleaning blade for an electrophotographic copying machine, which comprises adhering with a hardening adhesive layer.