JPH0635387A - Cleaning blade for electrophotographic copying machine and its produciton and cleaning device having this cleaning blade - Google Patents

Abstract

PURPOSE:To provide the cleaning device which has the high adhesive power to a metallic fixture and a blade and exhibits excellent durability in cleaning effect. CONSTITUTION:This cleaning blade 1 for an electrophotographic copying machine is constituted by sticking the blade 3 for removing the unnecessary toners on the photosensitive body of the electrophotographic copying machine and the metallic fixture 2 for mounting the blade 3 to the electrophotographic copying machine body to each other by using a radiation curing type adhesive 4 contg. (A) an adhesive polymer and (B) a monomer having an ethylenic unsatd. bond and curing this adhesive and this process consists in producing such cleaning blade. This cleaning device for the electrophotographic copying machine has the above-mentioned cleaning blade 1.

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 the figure, 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.

In order for the cleaning blade to continue to exhibit stable cleaning performance for a long period of time, it is necessary that the edge of the cleaning blade is always in contact with the surface of the photoconductor at an appropriate pressure and for that reason. Of course, the cleaning blade tip edge has good smoothness, and the cleaning blade is mounted on the mounting bracket with high accuracy, and there is no misalignment due to peeling or lifting from the bracket. It is necessary to be firmly fixed to.

As a method for fixing the blade to the fitting, for example, a method using an adhesive tape (Japanese Patent Laid-Open No. 61-130975)
Japanese Laid-Open Patent Publication No. 61-145), a method using an instant adhesive (JP-A-63-269188), and a method using a hot-melt adhesive (JP-A-61-145).
In addition to various methods such as 578), an adhesive mainly composed of a mixture of unsaturated polyurethane resins having two or more ethylenically unsaturated groups at the end is cured by radiation and / or heat. There has been proposed a method of bonding by this (Japanese Patent Laid-Open No. 1-129282).

However, the method using the adhesive tape is
Although high-precision initial fixing can be easily performed, the adhesive strength between the mounting member and the blade is small, and the adhesive strength is reduced particularly at high temperatures, which causes a problem in cleaning property. 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, the method using a hot melt adhesive can easily fix the adhesive, and the adhesive force is larger than that of the instant adhesive, but the adhesive force has a large temperature dependency. Further, since the pressure fusion is performed 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. Also,
In the case of a method using an adhesive containing a mixture of unsaturated polyurethane resins as a main component, since the curing is performed by a radical reaction, the curing rate varies depending on the amount of oxygen present,
There is a problem that the performance of the obtained cleaning blade tends to vary. Further, a radiation curable adhesive cannot usually sufficiently satisfy the performance (adhesive strength, durability, heat resistance) required for a cleaning blade.

[0007]

SUMMARY OF THE INVENTION The present invention has been made to solve the problems of the conventional method in the cleaning blade for an electrophotographic copying machine, and has high productivity.
Moreover, the precision of the adhesive fixing of the blade and the mounting bracket is high,
Further, it is an object of the present invention to provide a cleaning blade for an electrophotographic copying machine having a sufficient adhesive force, heat resistance and cleaning performance with durability, a method for producing the same, and a cleaning device equipped with the cleaning blade.

[0008]

According to the present invention, a blade for removing unnecessary toner on a photoconductor of an electrophotographic copying machine, and a fitting for attaching the blade to the main body of the electrophotographic copying machine are provided with (A) adhesiveness. A cleaning blade for an electrophotographic copying machine and a cleaning blade for the electrophotographic copying machine, which are obtained by sticking together using an ultraviolet curable adhesive containing a polymer and (B) a monomer having an ethylenically unsaturated bond, and curing the adhesive. And a cleaning device equipped with the cleaning blade.

[0009]

OPERATION AND EXAMPLES The cleaning blade for an electrophotographic copying machine of the present invention is one in which the blade and the mounting member are integrated by an ultraviolet curable adhesive.

As the blade, a polyurethane elastomer used in a conventional cleaning blade (for example, a polyester polyol as a polyol, 4,4'-diphenylmethane diisocyanate as an isocyanate, and an alcohol type as a curing agent) is used. There is a blade consisting of. The blade made of polyurethane elastomer has excellent wear resistance and mechanical strength.

Further, since the blade cures the adhesive with ultraviolet rays, it is preferable that the blade has a thickness that is transparent and transmits ultraviolet rays.

Examples of the fittings used in the cleaning blade of the present invention include fittings made of various metals, plastics, ceramics and the like used in conventional cleaning blades. Untreated steel plate, zinc phosphate A mounting bracket made of a steel plate that has been subjected to a surface treatment such as heat treatment or chromate treatment, or a steel plate that has been subjected to a plating treatment is preferable from the viewpoint of aging resistance, particularly corrosion resistance.

The adhesive used in the cleaning blade of the present invention is an ultraviolet curable adhesive containing (A) an adhesive polymer and (B) a monomer having an ethylenically unsaturated bond. The UV-curable adhesive is different from conventionally known UV-curable adhesives in that the amount of the adhesive polymer compounded is extremely large with respect to the monomer having an ethylenically unsaturated bond, and the ordinary design area It is even more deficient and has excellent adhesion, particularly excellent adhesion to substrates having greatly different surface properties such as metal and plastic, and is very useful as an adhesive for cleaning blades.

The UV-curable adhesive used in the present invention, which further contains a styrene-acrylonitrile copolymer having at least one ethylenically unsaturated bond at the terminal and / or an isocyanate compound, has a higher adhesive strength. Indicates.

Examples of the adhesive polymer (A) include unsaturated polyester resins, saturated polyester resins, esters of these with (meth) acrylic acid, polyurethane resins, diallyl phthalate resins, ketone resins, alkyd resins, phenol resins, rosins. Modified phenol resin, rosin ester, maleic acid modified rosin ester, urea resin, melamine resin, polyamide resin, styrene- (meth) acrylic acid copolymer or its ester, poly (meth) acrylate, petroleum resin having 1 to 9 carbon atoms , Hydrogenated petroleum resin, polybutadiene, natural or synthetic rubber, polyethylene, polypropylene, ethylene-vinyl acetate copolymer resin, polyvinyl alcohol and the like.

Among these, unsaturated polyester resins,
Saturated polyester resin, phenol resin, synthetic rubber, ethylene-vinyl acetate copolymer and the like are particularly preferable.

The monomer (B) having an ethylenically unsaturated bond is not particularly limited as long as there is no problem in the adhesiveness between the fitting and the blade and the compatibility with the adhesive polymer. Specifically, N-vinylpyrrolidone, styrene, vinyltoluene, chlorostyrene, t-
Butylstyrene, α-methylstyrene, divinylbenzene, acrylic acid, methacrylic acid, methyl of acrylic acid or methacrylic acid, ethyl, isopropyl, n-butyl, t-butyl, α-ethylhexyl, n-nonyl, n
N-butoxyethyl, cyclohexyl, phenoxyethyl, tetrahydrofurfuryl, glycidyl, allyl, benzyl, tribromophenyl, 2,3-dichloropropyl, 3-chloro- of acrylic acid or methacrylic acid, such as decyl, lauryl and stearyl esters. 2-hydroxypropyl, N, N-dimethylaminoethyl,
Ethylene glycol mono (meth) acrylate, propylene glycol mono (meth), such as N, N-diethylaminoethyl and Nt-butylaminoethyl ester
Acrylate, diethylene glycol mono (meth) acrylate, dipropylene glycol mono (meth) acrylate, molecular weight (hereinafter referred to as MW) 200 to 1000
Polyethylene glycol mono (meth) acrylate,
MW200-1000 polyethylene glycol monomethyl ether mono (meth) acrylate, MW200-
1000 polypropylene glycol mono (meth) acrylate, MW 200-1000 polypropylene glycol monomethyl ether mono (meth) acrylate,
MW 200 to 1000 polypropylene glycol monoethyl ether mono (meth) acrylate, ethylene glycol di (meth) acrylate, propylene glycol di (meth) acrylate, 1,3-propanediol di (meth) acrylate, 1,4-butanediol di (Meth) acrylate, neopentyl glycol di (meth) acrylate, 1,6-hexanediol di (meth) acrylate, polyethylene glycol di (meth)
Acrylate, polypropylene glycol di (meth) acrylate, glycerin di (meth) acrylate, glycerin tri (meth) acrylate, trimethylolethane di (meth) acrylate, trimethylolethane tri (meth) acrylate, trimethylolpropane tri (meth) acrylate , Acrylamide, N, N-dimethylacrylamide, N, N-diethylacrylamide, ethylenebisacrylamide, diallylphthalate, triallyl isocyanurate, dibutyl fumarate, vinyl acetate and the like. These may be used alone or in combination of two or more if necessary.

Among the above compounds, N-vinylpyrrolidone, tetrahydrofurfuryl acrylate, tetrahydrofurfuryl methacrylate, methyl acrylate, ethyl acrylate, butyl acrylate and the like are particularly preferably used.

If desired, polyester acrylate, epoxy acrylate, urethane acrylate, polyether acrylate, silicone acrylate or the like having two or more terminal ethylenically unsaturated bonds may be added.

The UV-curable adhesive used in the present invention is 5 to 90% by weight of adhesive polymer (% by weight, the same applies hereinafter).
And a monomer having an ethylenically unsaturated bond 95 to 10%
Among these, the adhesive polymer 2
0 to 50%, monomer 8 with ethylenically unsaturated bond
Those composed of 0 to 50% are particularly preferably used.

If the proportion of the monomer having an ethylenically unsaturated bond is less than the above range, the curing rate is slow and the heat resistance is insufficient, and if it exceeds the above range, the adhesiveness tends to be poor.

The adhesive used in the present invention further comprises styrene-containing at least one ethylenically unsaturated bond.
By adding an acrylonitrile copolymer and / or a polyisocyanate compound, the adhesive force can be further enhanced.

The above-mentioned styrene-acrylonitrile copolymer having at least one ethylenically unsaturated bond is, for example, a terminal called "AN-6" manufactured by Toagosei Kagaku Kogyo Co., Ltd. Examples thereof include methacryloyl group-containing styrene-acrylonitrile copolymers.
The blending amount is 100 parts (parts by weight, the same applies hereinafter), 0.5 to 20 parts, and preferably 1 to 10 parts with respect to the total amount of the adhesive polymer and the monomer having an ethylenically unsaturated bond.

The polyisocyanate compound is not particularly limited, and examples thereof include tolylene diisocyanate, metaphenylene diisocyanate, diphenylmethane diisocyanate, hexamethylene diisocyanate, polymethylene polyphenyl diisocyanate, isophorone diisocyanate and 1,5-naphthalene diisocyanate. can give. These are highly effective when the adhesive polymer itself has a functional group capable of reacting with an isocyanate group, such as a hydroxyl group, a carboxyl group, or an amino group, and usually has an adhesive polymer and an ethylenically unsaturated bond. 1 to 25 parts, preferably 1 to 10 parts are added to 100 parts of the total amount of the monomers.

The adhesive used in the present invention comprises the adhesive polymer and a monomer having an ethylenically unsaturated bond, optionally a monomer having two or more terminal ethylenically unsaturated bonds, and the like. It is obtained by adding a styrene-acrylonitrile copolymer having at least one ethylenically unsaturated bond at the terminal, and / or a polyisocyanate compound, and uniformly mixing and dissolving them.

The adhesive of the present invention can be cured by a known method. For example, it is suitable to use a light source having a wavelength of 200 to 400 nm. The light source may be appropriately selected depending on the type of the photopolymerization initiator, and for example, sun rays, low pressure, high pressure or ultrahigh pressure mercury lamps, carbon arc lamps, xenon lamps, tungsten lamps and the like can be used. Further, in the present invention, other curing means, for example, a method of curing with ionizing radiation such as electron beam or γ ray can be used.

In the present invention, the electron beam, X-ray, γ
When using high-energy ionizing radiation that has the effect of emitting secondary electrons when absorbed by a substance, such as rays,
It is not particularly necessary to add a polymerization initiator, but it is preferable to add a polymerization initiator when curing with ultraviolet rays.

Examples of the polymerization initiator include ketone peroxides such as methyl ethyl ketone peroxide and cyclohexanone peroxide, cumene hydroperoxide, hydroperoxides such as tert-butyl peroxide, di-tert-butyl peroxide and dicarboxylic acid. Examples thereof include dialkyl peroxides such as mill peroxide, peroxy esters such as tert-butyl peroxylaurate and tert-butyl peroxybenzoate, and azo compounds such as azobisisobutyronitrile. Further, a metal soap such as cobalt or manganese for the above ketone peroxides, or a polymerization accelerator such as a reducing amine for the above hydroperoxides can be used together. For the curing, irradiation from a light source in the ultraviolet region and irradiation with the ionizing radiation may be used alone or in combination. However, considering the damage of the blade, the finishing accuracy of the cleaning blade, the processing time, and the like, the curing method using ultraviolet rays is preferably used.

The thickness of the adhesive layer in the cleaning blade of the present invention is preferably as thick as possible within the specifications of the product in terms of peel adhesion, and thin in terms of shear adhesion. From this viewpoint, the thickness is usually 1
It is preferably in the range of 0 to 100 μm.

In order to bond the blade and the fitting with the UV-curing adhesive, the UV-curing adhesive is applied to one or both of the blade and the fitting, and they are pressure-bonded at a predetermined position. , UV irradiation is performed. However, it is usually preferable to apply it on the side of the mounting bracket in terms of workability and accuracy of the cleaning blade. In addition, a primer treatment may be applied to the adhesive surface of the mounting member, if necessary. Specific examples of the primer include those usually used for metals such as silane coupling agents, acrylic-based, epoxy-based or phenol-based primers, among which the material of the adhesive used for bonding with the blade is It is selected accordingly.

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

The irradiation of the ultraviolet rays is carried out from the urethane side with respect to the blade and the fitting which are pressure-fixed to a predetermined size. Moreover, you may use together the method of heating.

The cleaning blade of the present invention is superior in adhesiveness and sufficiently strong in adhesive force as compared with the conventional cleaning blade obtained by using an adhesive, so that the cleaning blade is strongly adhered with high positional accuracy and is cleaned. It also has excellent durability.

The cleaning blade of the present invention is attached to the main body by a mounting member, and an edge of the cleaning blade is pressed against the surface of the photoconductor to remove excess toner on the surface of the electrophotographic copying machine. The electrophotographic copying machine equipped with the cleaning device has a high temperature (50 to 60 ° C.) due to downsizing and speeding up of the machine.
Even if it becomes, it maintains excellent cleaning properties.

The present invention is 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). An ultraviolet curable adhesive obtained by uniformly dissolving the materials shown in Table 1 was applied to the surface of this mounting bracket so that the thickness was 100 μm. Next, at a predetermined position of the metal fitting coated with the adhesive, the hardness is JIS A 65
2mm thick made from 2 degree polyurethane elastomer
Blade is pressed and held at a pressure of about 0.5 kg / cm ² , and the blade side is faced up, and UV irradiation device (Eye Grandage ECS-30 manufactured by Eye Graphics Co., Ltd.) is used.
1. Output 120W using a metal halide lamp)
/ Cm, the distance from the light source was 10 cm, and the blade side was irradiated with ultraviolet rays for 10 seconds to cure the adhesive.

Curing was carried out with an integrated light quantity of 3000 mJ / cm ² .
The time required for adhesion was about 7 seconds.

The blade used here is manufactured as follows.

A prepolymer having an isocyanate (NCO) group content of 6.2% obtained by reacting a polyester polyol with 4,4'-diphenylmethane diisocyanate is combined with 1,4-butanediol and trimethylolpropane as a crosslinking agent as a crosslinking agent. NCO) group / hydroxyl (OH) group ratio = 0.95.

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

The adhesive strength and durability of the cleaning blades obtained in Examples 1 and 2 were examined as follows.

[Adhesive Strength] As shown in FIG. 2, the mounting member 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 °
The measurement was performed at an ambient temperature of 60 ° C. Pulling speed is 3
It was set to 0 mm / min.

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

The abbreviations in Table 1 for polymers, monomers and compounds used as adhesive compositions in the examples are as follows:
It is as follows.

A1: thermoplastic high molecular weight polyester resin manufactured by Toyobo Co., Ltd., trade name: Byron 300 B1: N-vinylpyrrolidone B2: tetrahydrofurfuryl acrylate C: macromonomer manufactured by Toagosei Co., Ltd., at the end Styrene-acrylonitrile copolymer having methacryloyl group, trade name: AN-6 D: crude methylene diisocyanate photopolymerization initiator: manufactured by Ciba Geigy, trade name: Irgacure 907 Examples 3 and 4 As a primer for the mounting bracket in Example 1. Except that a 1% methanol solution of an acrylic silane coupling agent (trade name: KBM5103, manufactured by Shin-Etsu Chemical Co., Ltd.) was applied to the adhesive surface, air-dried and then heat-treated at 110 ° C. for 30 minutes. Same as Example 1 using the UV-curable adhesive having the composition shown in Table 1. Like that. The time required for adhesion was about 7 seconds in all cases.

The test results are shown in Table 1.

[0047]

[Table 1]

Comparative Example 1 The same fittings and blades as in Example 1 were used.
After applying the instant adhesive shown in Table 2 to the mounting bracket so that the thickness is about 20 μm, immediately attach the blade and 1k
The obtained cleaning blade was pressed and held at a pressure of g / cm ² for 1 minute, and the adhesive strength and durability of the obtained cleaning blade were examined. The results are shown in Table 2.
Shown in. The time required for adhesion was about 15 seconds.

Comparative Example 2 The same fittings and blades as in Example 1 were used.
The adhesive tape was attached to the mounting metal fitting, the blade was attached thereto, and the pressure was held at 3 kg / cm ² for 1 minute to examine the adhesive strength and durability of the obtained cleaning blade. The results are shown in Table 2. The time required for adhesion was about 5 seconds.

Comparative Example 3 The same fittings and blades as in Example 1 were used, and a hot melt adhesive (film, width 5 mm × thickness 100) was used.
(μm) was temporarily fixed to the adhesive surface of the fitting, a blade was attached from above, and the blade was held at a pressure of 3 kg / cm ² , heated at 150 to 160 ° C. for 1 minute by high frequency, and then cooled.
The adhesive strength and durability of the obtained cleaning blade were examined. The results are shown in Table 2. The time required for adhesion was about 40 seconds.

Comparative Examples 4 and 5 The same procedure as in Example 1 was carried out except that commercially available UV curable adhesives a and b were used. The time required for bonding was about 7
It was seconds.

The adhesives used in the comparative examples are as follows.

Cyanoacrylate instant adhesive: manufactured by Toa Gosei Chemical Industry Co., Ltd., trade name: Aron Alpha-40
1 Double-sided adhesive tape: product number No. manufactured by Nitto Denko Corporation. 5
00 Urethane hot melt adhesive: Hot melt adhesive containing urethane base polymer containing no reactive group,
Takeda Pharmaceutical Co., Ltd., trade name: Takemelt XM205
L UV-curable adhesive (a): urethane acrylate-based polymerizable oligomer as a main component and reactive diluent added, manufactured by Aika Kogyo Co., Ltd., trade name: Aika Itron-Z5
24 UV curable adhesive (b): A urethane acrylate-based polymerizable oligomer as a main component and a reactive diluent added, manufactured by ThreeBond Co., Ltd., trade name: UV curable adhesive 3
065

[0054]

[Table 2]

From the results shown in Tables 1 and 2, the cleaning blade obtained by the manufacturing method of the present invention has a stronger adhesive force between the blade and the mounting fitting than that obtained by the conventional method, and has a higher durability. It is excellent, and it can be seen that the time required for bonding is short or at most the same.

[0056]

EFFECT OF THE INVENTION The cleaning blade for an electrophotographic copying machine according to the present invention has a highly durable cleaning effect because the blade and the mounting member are strongly bonded to each other with high positional accuracy and in a short time. Further, the cleaning device equipped with the cleaning blade has an effect of being excellent in durability even in a high temperature environment due to speeding up and compactness of the electrophotographic copying machine.

[Brief description of drawings]

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

FIG. 2 is an explanatory diagram of a method for testing the adhesive force between a blade and a mounting member.

[Explanation of symbols]

 1 Cleaning blade 2 Mounting bracket 3 Blade 4 Adhesive layer

Claims (10)

[Claims] 1. A blade for removing unnecessary toner on a photoconductor of an electrophotographic copying machine, and a fitting for attaching the blade to the main body of the electrophotographic copying machine, wherein (A) an adhesive polymer and (B) an ethylenic polymer. A cleaning blade for an electrophotographic copying machine, which is obtained by sticking together an ultraviolet curable adhesive containing a monomer having an unsaturated bond and curing the adhesive. 2. The ultraviolet curable adhesive is an adhesive polymer 5.
~ 90% by weight and monomers with ethylenically unsaturated bonds
The cleaning blade for an electrophotographic copying machine according to claim 1, which comprises 95 to 10% by weight. 3. The cleaning blade for an electrophotographic copying machine according to claim 1, wherein the adhesive polymer is a polyester resin. 4. The monomer having an ethylenically unsaturated bond is a monomer selected from N-vinylpyrrolidone, tetrahydrofurfuryl acrylate, tetrahydrofurfuryl methacrylate, methyl acrylate, ethyl acrylate and butyl acrylate. Cleaning blade for the described electrophotographic copying machine. 5. The cleaning blade for an electrophotographic copying machine according to claim 1, wherein the ultraviolet-curable adhesive contains a styrene-acrylonitrile copolymer having at least one ethylenically unsaturated bond at the terminal. . 6. A styrene-acrylonitrile copolymer having at least one ethylenically unsaturated bond at the end, based on 100 parts by weight of the total amount of the adhesive polymer and the monomer having an ethylenically unsaturated bond in the ultraviolet curable adhesive. 0.
The cleaning blade for an electrophotographic copying machine according to claim 5, which contains 5 to 20 parts by weight. 7. The cleaning blade for an electrophotographic copying machine according to claim 1, wherein the ultraviolet curable adhesive contains a polyisocyanate compound. 8. The electrophotographic copy according to claim 7, wherein the ultraviolet-curable adhesive contains 1 to 25 parts by weight of a polyisocyanate compound based on 100 parts by weight of the adhesive polymer and a monomer having an ethylenically unsaturated bond. Machine cleaning blade. 9. A blade for removing unnecessary toner on a photoconductor of an electrophotographic copying machine, and a fitting for attaching the blade to the main body of the electrophotographic copying machine, comprising (1) an adhesive polymer and (2) an ethylenic polymer. A method for producing a cleaning blade for an electrophotographic copying machine, which comprises laminating using an ultraviolet-curable adhesive containing a monomer having an unsaturated bond and curing the adhesive. 10. A blade for removing unnecessary toner on a photoconductor of an electrophotographic copying machine, and a mounting bracket for mounting the blade on the main body of the electrophotographic copying machine, comprising: (1) an adhesive polymer and (2) an ethylenic polymer. A cleaning device for an electrophotographic copying machine, comprising a cleaning blade for an electrophotographic copying machine, which is adhered by using an ultraviolet curable adhesive containing a monomer having an unsaturated bond and the adhesive is cured.