JP2001206522A - Endless belt with meandering preventive guide - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an endless belt with a meandering preventive guide the meandering preventive guide of which is adhered on it in high precision and without causing positional slippage or peeling of the meandering preventive guide even by driving the endless belt for a long period of time. SOLUTION: This endless belt with the meandering preventive guide on which the meandering preventive guide is adhered and provided on the resin made endless belt through an adhesive layer constitutes a characteristic feature that the aforementioned adhesive layer contains a cross linking agent of an adhesive component containing specific acrylic copolymer and cross linking agent and that a solvent insoluble matter of the cross linking agent is 80-99 weight %.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an endless belt with a meandering prevention guide and an adhesive for attaching the meandering prevention guide,
Furthermore, it relates to the composition. The endless belt with a meandering prevention guide of the present invention is used for an intermediate transfer device such as an electrophotographic copying machine, a laser printer, and a video printer, a transfer separation device, a transport device, a charging device, a developing device, and the like.

[0002]

2. Description of the Related Art Conventionally, endless belts have been used for intermediate transfer devices such as electrophotographic recording devices, transfer devices, and transport devices. The endless belt is used as an intermediate transfer belt 6 of an intermediate transfer device of a copying machine, for example, as shown in FIG. 1, and the intermediate transfer is performed by the following process. That is, the photosensitive drum 1 is uniformly charged by the charger 3 and an electrostatic latent image corresponding to the image is formed by the exposure device 2.
This is developed by the developing device 5 to form a toner image with toner. The toner image is transferred to the intermediate transfer belt 6 by the electrostatic transfer device 10, and the transferred toner image is transferred to the recording paper 11 again by the pressing roller 12. At this time, the intermediate transfer belt 6 has a plurality of rollers 7 in contact with its inner surface,
It is supported by 8 and 9, but if it is not driven with high precision,
Since the endless belt is likely to meander, and the exposure position and the transfer position are shifted, image unevenness and image shift are likely to occur.

In order to prevent the belt from meandering, a flange is provided on the drive roller or the like, or a meandering prevention guide is provided on the inner surface of both ends of the belt, and the guide portion is provided on the outer periphery of the roller. Has been proposed. Regarding the latter technique, for example,
187435 proposes a method of bonding a meandering prevention guide to an endless belt using an acrylic adhesive or the like. However, when an adhesive is used, there is a problem that it is necessary to hold the guide until the adhesive runs out and the adhesive is hardened, and it is difficult to form an accurate guide. Further, when the belt on which the guides are bonded by using the adhesive is continuously driven, there is a problem that the guides are peeled off by being driven along the curved surface of the roller for a long time. Although there is a technique using a hot melt adhesive, there is a problem similar to the above case.

[0004]

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a highly accurate meandering prevention guide adhered, and even if the endless belt is driven for a long time, the meandering prevention guide is displaced or peeled off. An object of the present invention is to provide an endless belt with a meandering prevention guide that does not occur.

[0005]

Means for Solving the Problems In order to solve the above-mentioned object, the present inventors have made intensive studies on the adhesive layer for attaching the meandering prevention guide in the endless belt with the meandering prevention guide. The inventors have found that the above object can be achieved by using a crosslinked product of the acrylic copolymer shown below and having a specific solvent-insoluble content, and have completed the present invention.

That is, the present invention relates to an endless belt with a meandering prevention guide in which a meandering prevention guide is attached to an endless belt made of resin via an adhesive layer, wherein the adhesive layer has an alkyl group having 3 to 10 carbon atoms. (Meth) acrylic acid alkyl ester-based monomer (A)
50% by weight, ethyl (meth) acrylate (B) 40-8
0% by weight, (meth) acrylic acid and / or (meth)
It contains a copolymer obtained by copolymerizing 1 to 20% by weight of methyl acrylate (C) and 1 to 10% by weight of (meth) acrylate monomer (D) having a hydroxyl group, and a crosslinking agent. The present invention relates to an endless belt with a meandering prevention guide, comprising a crosslinked product of an adhesive composition, wherein the crosslinked product has a solvent-insoluble content of 80 to 99% by weight.

In the copolymer obtained from such a monomer composition, the number of carbon atoms of the alkyl group forming the ester group in each monomer and the ratio of the monomers are adjusted, and the meandering prevention guide and the endless Good adhesion to belt and strong cohesion. In addition, the pressure-sensitive adhesive layer containing the crosslinked product of such a copolymer has a solvent-insoluble content adjusted to 80 to 99% by weight, so that the pressure-sensitive adhesive layer can have a uniform thickness and excellent shear resistance. As described above, since the adhesive layer in the endless belt with the meandering prevention guide of the present invention has excellent shear resistance, the meandering prevention guide does not shift or peel even when the endless belt is driven for a long time.

[0008] The endless belt with a meandering prevention guide may be configured such that when a shear is applied to the adhesive layer of the meandering prevention guide attached to the endless belt at normal temperature and normal pressure, the shear load of the adhesive layer is 29%. It is preferable that the thickness be equal to or more than 0.4 N (length 4 mm × 20 mm width).

The endless belt with a meandering prevention guide has a thickness of 4.9 N (length 4 N) at normal temperature and normal pressure on the adhesive layer of the meandering prevention guide attached to the endless belt.
It is preferable that the deviation of the meandering prevention guide from the endless belt with respect to the endless belt after 1 day by applying static shearing (mm × 20 mm width) is 1 mm or less.

When the adhesive layer of the endless belt with a meandering prevention guide has such physical properties, the shear resistance is sufficiently satisfied.

Further, the present invention provides an alkyl (meth) acrylate monomer having an alkyl group having 3 to 10 carbon atoms (A) used for forming an adhesive layer in the endless belt with a meandering prevention guide. 10 to 50% by weight, 40 to 80% by weight of ethyl (meth) acrylate (B), 1 to 20% by weight of (meth) acrylic acid and / or methyl (meth) acrylate (C), ) Acrylic ester monomer (D)
The present invention relates to an adhesive for sticking a meandering prevention guide, comprising a copolymer obtained by copolymerizing 1 to 10% by weight.

The pressure-sensitive adhesive for pasting the meandering prevention guide becomes a crosslinked product by cross-linking the pressure-sensitive adhesive composition for pasting the meandering guide containing the cross-linking agent, and realizes the adhesiveness and the shear resistance.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION In the endless belt with a meandering prevention guide of the present invention, the pressure-sensitive adhesive forming the pressure-sensitive adhesive layer is:
A copolymer using the (meth) acrylic monomers (A) to (D) as raw materials. In the present invention, (meth)
The acrylic monomer means an acrylic monomer and / or a methacrylic monomer. Hereinafter, (meta) has the same meaning.

As the alkyl (meth) acrylate monomer (A) having an alkyl group having 3 to 10 carbon atoms, various monomers can be used without any particular limitation. It is preferable to use those having 6 to 10 carbon atoms. Examples of such a monomer (A) include hexyl acrylate, hexyl methacrylate, 2-ethylhexyl acrylate, 2-ethylhexyl methacrylate, heptyl acrylate, heptyl methacrylate, n-octyl acrylate, n-octyl methacrylate, isooctyl acrylate, and isooctyl. Examples include methacrylate, isononyl acrylate, isononyl methacrylate, and the like. These monomers (A) may be used alone or in combination of two or more.

The monomer (A) is polymerized at a ratio of 10 to 50% by weight (hereinafter abbreviated as "%") based on the total amount of the monomers constituting the copolymer. When the proportion of the monomer (A) is small, the cohesive force is small, and the shear resistance of the meandering prevention guide tends to be small. Therefore, the proportion of the monomer (A) is 20% or more, and more preferably 25% or more. It is preferred that On the other hand, when the proportion of the monomer (A) is large, a sufficient adhesive strength tends to be not obtained. Therefore, the proportion of the monomer (A) is preferably set to 40% or less.

As the ethyl (meth) acrylate (B), ethyl acrylate and ethyl methacrylate are used, and ethyl acrylate is preferred. The monomer (B) is
The polymerization is carried out at a ratio of 40 to 80% of the whole monomer constituting the copolymer. When the proportion of the monomer (B) is small, sufficient adhesive strength tends not to be obtained. Therefore, the proportion of the monomer (B) is preferably at least 50%, more preferably at least 60%.
On the other hand, when the proportion of the monomer (B) is large, the cohesive force is small, and the shear resistance of the meandering prevention guide tends to be small. Therefore, the proportion of the monomer (B) is preferably 75% or less. .

Examples of (meth) acrylic acid and / or methyl (meth) acrylate (C) include methyl acrylate, methyl methacrylate, acrylic acid and methacrylic acid. These monomers (C) may be used alone or in combination of two or more.

The monomer (C) is polymerized at a ratio of 1 to 20% of the whole monomer constituting the copolymer. The ratio of the monomer (C) is preferably 2% or more to obtain a sufficient adhesive strength. For the same reason, the ratio of the monomer (C) is preferably set to 10% or less.

Examples of the (meth) acrylate monomer (D) having a hydroxyl group include hydroxyethyl acrylate and hydroxyethyl methacrylate. These monomers (D) may be used alone or in combination of two or more.

The monomer (D) is polymerized at a ratio of 1 to 10% of the whole monomer constituting the copolymer. The proportion of the monomer (D) is preferably 2% or more to obtain a sufficient adhesive strength. For the same reason, the proportion of the monomer (D) is preferably set to 8% or less.

The copolymer of the present invention comprises the above monomers (A) to
It is obtained by copolymerizing (D) by a general polymerization method. In the copolymer of the present invention, other monomers and the like other than the above-mentioned monomers (A) to (D) can be used in combination as long as the object of the present invention is not impaired.

The method for producing the copolymer in the present invention is not particularly limited, and any of a solution polymerization method, an emulsion polymerization method and a suspension polymerization method can be employed. In the method for producing the copolymer, water and / or an organic solvent are appropriately selected and used as a polymerization solvent (medium). As the organic solvent, for example, benzene, toluene,
Xylene, hexane, cyclohexane, heptane, octane, chloromethane, chloroethane, chlorofluoromethane, chlorofluoroethane, fluoromethane, fluoroethane, methanol, ethanol, isopropyl alcohol, butyl alcohol, ethylene glycol, glycerin, ethyl acetate, acetone, methyl ethyl ketone ,
Methyl isobutyl ketone, dioxane, dimethylformamide, dimethyl sulfoxide and the like are used, and these solvents may be used in combination as appropriate.

In producing the copolymer by the above polymerization method, a polymerization initiator is usually used. Examples of the polymerization initiator include benzoyl peroxide (benzoyl peroxide), tert-butyl peroxide, lauroyl peroxide, cumyl peroxide, tert-butyl hydroperoxide, cumene hydroperoxide,
Azobisisobutyronitrile, 2,2'-azobis-
(2,4-dimethylvaleronitrile), hydrogen peroxide, ammonium persulfate, sodium persulfate, potassium persulfate, 2,2'-azobis- (2-amidinopropane)
-Hydrochloride, redox initiator (hydrogen peroxide-
Ferrous chloride, ammonium persulfate-sodium acid sulfite, etc.), tert-butyl (E) -3-isopropoxycarbonylperoxyacrylate, 1,1-di-te
rt-butylperoxy-2-methylcyclohexane,
Radical donors such as 2,2-bis (4,4-di-tert-butylperoxycyclohexyl) propane;

In the copolymer of the present invention, the monomers (A) to (D) can be copolymerized with an active energy ray such as an ultraviolet ray, an electron beam or a radiation. In such copolymerization, a photopolymerization initiator and the like can be used in combination.

The above copolymer is composed of the monomers (A) to
It is composed of structural units derived from (D), and the ratio of each structural unit is in accordance with the respective ratio when polymerizing using each of the monomers (A) to (D).

The pressure-sensitive adhesive for pasting the meandering guide of the present invention containing the copolymer is used as a pressure-sensitive adhesive composition together with a cross-linking agent. The adhesive layer in the endless belt with a guide is formed.

The crosslinking agent is not particularly limited. For example, polyisocyanate compounds, epoxy compounds, aziridine compounds, metal chelate compounds, metal alkoxides and acrylic monomers such as trimethylolpropane and ethylene glycol diacrylate are used. Can be Such a cross-linking agent is cross-linked by a means according to the type of the cross-linking agent to make the pressure-sensitive adhesive composition a cross-linked product. For example, when a polyisocyanate compound or the like is used as a cross-linking agent, a means such as heating is usually employed, and such a cross-linking agent reacts with a hydroxyl group or a carboxy group in the copolymer to form a cross-linked product. When an acrylic monomer is used as the cross-linking agent, means for irradiating active energy rays such as ultraviolet rays, electron beams, and radiations is employed.

The amount of the crosslinking agent used is appropriately determined depending on the type of the crosslinking agent and the crosslinking means. For example, when using a polyisocyanate compound as a crosslinking agent,
It is usually about 0.1 to 5 parts with respect to 100 parts by weight of the copolymer (hereinafter abbreviated as "part"). If the proportion of the polyisocyanate compound exceeds 5 parts, it may be difficult to obtain a sufficient adhesive strength.

In addition, the special adhesive composition of the present invention
Various tackifiers, additives, antioxidants, and the like can be appropriately compounded. The solvent-insoluble content in the crosslinked product of the pressure-sensitive adhesive composition is 80 to 99%. More preferably, it is 85 to 98%. That is, when the solvent-insoluble content in the crosslinked structure is less than 80%, the pressure-sensitive adhesive layer on which the guide is attached is weak against shear load, and when it exceeds 99%, it is difficult to obtain sufficient adhesive strength.

The solvent-insoluble content in the crosslinked product is determined as follows. That is, about 0.1 g of a sample was cut out from the crosslinked product, and this was cut into toluene at room temperature for 5 minutes.
Soak for days. Next, the sample was pulled up and set at 130 ° C.
After drying for 2 hours, the weight of the sample is weighed. And it is calculated | required according to the following formula: Solvent insoluble matter (weight%) = {(sample weight (g) after immersion and drying) / sample weight (g)} x100.

The endless belt with a meandering prevention guide of the present invention is one in which a meandering prevention guide is attached to an endless belt made of resin via the adhesive layer. The meandering prevention guide is usually provided at both ends of the endless belt in terms of the meandering prevention effect, durability, reinforcing effect, and the like. For example, as shown in FIG. 2, a meandering prevention guide is attached via an adhesive layer all around the inner end of the endless belt. In FIG. 2, the meandering prevention guide is stuck on the inner surface of the endless belt. However, the surface on which the meandering prevention guide is stuck may be stuck on the outer surface of the endless belt depending on the application to which the endless belt is applied. Good. Also,
The meandering prevention guide is preferably provided on the entire circumference in view of the effect of reinforcing the endless belt.
It may be about 10 to 10 mm.

Further, the portion excluding the adhesive layer, that is, the material and shape of the resin endless belt and the meandering prevention guide,
The size, function, and the like are not particularly limited, and any conventionally known ones can be used.

For example, as an endless belt made of resin, an endless belt used for a photosensitive device, an intermediate transfer device, a transfer separation device, a transport device, a charging device, a developing device and the like in an electrophotographic copying machine, a laser printer, and the like is used. Listed, depending on their use, function, etc., material, shape,
The size and the like are appropriately set. As an example, in the case of an intermediate transfer belt and a transfer conveyance belt in an electrophotographic recording apparatus or the like, a semiconductive belt made of a polyimide resin containing a conductive filler or the like is used. Examples of the material of the endless belt include a polyimide resin, a polyester resin, a polyurethane resin, a polyamide resin, and a fluorine resin. The endless belt may or may not have a seam. Usually, the thickness of the endless belt is preferably about 20 to 100 μm.

As the material of the meandering prevention guide, an elastic body having an appropriate hardness can be used. Specifically, polyurethane, neoprene rubber, urethane rubber, polyester elastomer, chloroprene rubber, nitrile rubber,
Butyl rubber, silicon rubber and the like can be mentioned.
Among these, adhesion to the adhesive layer, electrical insulation, moisture resistance,
Considering solvent resistance, ozone resistance, heat resistance, and abrasion resistance, polyurethane rubber and silicone rubber are particularly preferable. The thickness of the meandering prevention guide material is not particularly limited, but is usually 1 to 5 m from the viewpoint of the meandering prevention effect and durability.
m is preferable.

The shape of the meandering prevention guide may be determined according to the conditions of use of the belt and the like. However, in order to obtain a sufficient meandering prevention effect, it is preferable that the cross section of the guide is substantially rectangular.
The width of the meandering prevention guide is usually preferably about 1 to 10 mm from the viewpoint of the meandering prevention effect and durability.

The adhesive layer to which the meandering prevention guide and the endless belt are adhered, and the above copolymer are obtained by subjecting the copolymer to crosslinking treatment by a crosslinking means according to the kind of the crosslinking agent. The thickness of the adhesive layer is usually about 50 to 200 μm. The endless belt with a meandering prevention guide of the present invention may be a reinforcing sheet, as long as the meandering prevention guide and the endless belt are attached via an adhesive layer, and the meandering prevention guide and the endless belt are directly adhered by the adhesive layer. May be attached via adhesive layers formed on both surfaces of the substrate.

The method for forming the adhesive layer for attaching the meandering prevention guide to the endless belt is not particularly limited. For example, after applying the adhesive composition on a release liner such as a polyethylene terephthalate (PET) film, crosslinking is performed. Then, a pressure-sensitive adhesive sheet having a pressure-sensitive adhesive layer mainly composed of a crosslinked product of a copolymer formed on a release liner is produced. Then
In general, after the pressure-sensitive adhesive sheet is attached to the meandering prevention guide, the release liner is removed, and then the adhesive sheet is attached to the endless belt. After the endless belt and the meandering prevention guide are adhered by the adhesive layer in this manner, the endless belt with the meandering prevention guide is manufactured by pressing and bonding each other to be integrated. In addition, it is important that the bonding is performed without air bubbles. Usually, a method such as bonding with a hand roller, a rubber roller, a press, bonding under reduced pressure, and bonding under pressure is used. Can be. In the case where a reinforcing sheet is used, the adhesive sheet is formed by forming a reinforcing sheet having an adhesive layer formed on both sides on a release liner. In addition, as the method of forming the adhesive layer, a pressure-sensitive adhesive composition is applied directly to a meandering prevention guide and cross-linked, or a film base material, a fiber sheet base material or the like which is cross-linked after application or impregnation on both surfaces is used. Any method may be used, for example, to make the film stick. In addition, the meandering prevention guide or the endless belt belt may be subjected to corona treatment, primer treatment, aging, or the like to improve the adhesive strength.

[0038]

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

Preparation Examples 1-4, Comparative Preparation Examples 1-2 (Preparation of Monomer Mixture) Each monomer (A)-(D) shown in Table 1 was mixed at a weight shown in the same table to obtain a monomer. A body mixture was prepared.

[0040]

[Table 1] Example 1 To a total amount of the monomer mixture prepared in Production Example 1, 100 parts of toluene as a polymerization solvent and 0.2 parts of benzoyl peroxide as a polymerization initiator were added, and the mixture was added in a nitrogen atmosphere. 6
The solution was polymerized at 0 ° C. for about 7 hours to obtain a copolymer solution. Next, 0.2 part of a catalyst (OL-1 manufactured by Tokyo Fine Chemical Co., Ltd.) was added to 100 parts of the copolymer solution, and then a tolylene diisocyanate adduct of trimethylolpropane as a cross-linking agent (Japan) was added. 3 parts of Coronate L) manufactured by Polyurethane Co. were added to obtain a pressure-sensitive adhesive composition.

The above-mentioned pressure-sensitive adhesive composition was applied on a release liner (polyethylene terephthalate film).
After drying at 5 ° C. for 5 minutes, an adhesive sheet having an adhesive layer having a thickness of 50 μm was formed. This adhesive sheet was punched out to the same length and width as the meandering prevention guide. A 1.5 mm-thick urethane rubber (manufactured by Tigers Polymer Co., Ltd., Tybren TR100-5) serving as a meandering prevention guide
5) Width 5 mm, length 94 using a slitter
It was cut to 2 mm to obtain a meandering control guide. Next, after removing the release liner from the meandering control guide, the guide was adhered to the inner surface of a polyimide belt having a thickness of 80 μm, an outer diameter of 200 mm, and a width of 300 mm along both ends of the belt.

Using the pressure-sensitive adhesive sheets obtained in the above Examples and Comparative Examples, the solvent-insoluble content and the adhesive strength in the crosslinked product were measured according to the following criteria. Table 1 shows the results.

[Solvent Insoluble Content in Crosslinked Structure] A sample (crosslinked structure) of about 0.1 g was cut out from the above-mentioned adhesive sheet and immersed in toluene at room temperature for 5 days. Next, the sample was lifted up with tweezers, transferred to an aluminum cup, dried at 130 ° C. for 2 hours, and then weighed. Then, the solvent-insoluble content in the crosslinked structure was measured according to the above-described formula.

[Adhesive Force] The above adhesive sheet was pressed and reciprocated on a SUS plate with a rubber roller (load: 2 kg) once.
Then, after standing for about 30 minutes, a 180 ° peeling test was performed at a speed of 300 mm / min in a 23 ° C. atmosphere using Tensilon UMT-4-100 manufactured by Toyo Baldwin. The width of the test piece was 20 mm.

Further, using the endless belts with guides for preventing meandering of the products of Examples and Comparative Examples, the shear strength and the amount of displacement were measured according to the following criteria. Table 2 shows the results.

[Shear strength] The endless belt with a meandering prevention guide cut into a strip having a width of 4 mm x 20 mm is pulled at a rate of 20 mm / min so that a load is applied to the guide portion, and the force at which the meandering prevention guide peels off from the endless belt. Was measured.

[Displacement Amount] A 500 g load was applied to the guide portion of the endless belt with a meandering prevention guide cut into a strip having a width of 4 mm × 20 mm, and the displacement amount [mm] after 2 days was measured.

Examples 2 to 4 and Comparative Examples 1 to 2 The same procedures as in Example 1 were carried out except that the monomer mixture was changed to the one shown in Table 2. Was prepared. The same evaluation as in Example 1 was performed. Table 2 shows the results.

[0049]

[Table 2] From the results in Table 2, the endless belt with a meandering prevention guide of the example uses an adhesive in which the amount of each of the monomers (A) to (D) is set to a specific range, and furthermore, the crosslinking of the adhesive composition. It can be seen that since a special adhesive layer in which the solvent-insoluble content of the product is set in a specific range is excellent, the adhesive strength is excellent, the shear strength is high, and the displacement is small.

On the other hand, in the endless belt with the meandering prevention guide of the comparative example, the amount of each of the monomers (A) to (D) is out of the specified range or the solvent-insoluble content is out of the specified range. As a result, the strength is small and the amount of displacement is large,
Poor shear resistance.

[0051]

As described above, the endless belt with a meandering prevention guide of the present invention is a crosslinked product of a copolymer obtained by copolymerizing specific monomers (A) to (D) at a specific ratio. Since the adhesive layer in which the solvent-insoluble content in the crosslinked product is set in a specific range is formed, the thickness of the adhesive layer becomes uniform and excellent shear resistance is exhibited. That is, by using the pressure-sensitive adhesive composition of the present invention, by bonding the endless belt and the meandering prevention guide, an electrophotographic copying machine, a laser printer, an intermediate transfer device such as a video printer, a transfer separation device, a transport device,
It is possible to realize highly accurate meandering control and improved durability of an endless belt used for a charging device, a developing device, and the like.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram for explaining a use state of an endless belt in an intermediate transfer device of an electrophotographic copying machine.

FIG. 2 is a schematic view of an endless belt with a meandering prevention guide.

[Explanation of symbols]

 Reference Signs List 1 photosensitive drum 6 intermediate transfer belt (endless belt) 7, 8, 9 roller 11 recording paper 21 endless belt 22 meandering prevention guide 23 adhesive layer

Continued on the front page F-term (reference) 2H003 CC04 2H032 BA09 2H077 AD07 GA03 3F023 AA05 AB05 BA01 BA10 BB09 BC01 GA01 3F049 BA03 BB11 LA02 LB03

Claims (5)

[Claims] 1. An endless belt with a meandering prevention guide in which a meandering prevention guide is attached to an endless belt made of resin via an adhesive layer, wherein the adhesive layer has an alkyl group having 3 to 10 carbon atoms. (Meth) acrylic acid alkyl ester monomer (A) 1
0 to 50% by weight, ethyl (meth) acrylate (B) 40
To 80% by weight, 1 to 20% by weight of (meth) acrylic acid and / or methyl (meth) acrylate (C) and 1 to 10% by weight of a (meth) acrylate monomer (D) having a hydroxyl group Consisting of a crosslinked product of a pressure-sensitive adhesive composition containing a copolymer and a crosslinking agent obtained by copolymerizing
And an endless belt with a meandering prevention guide, wherein the crosslinked product has a solvent-insoluble content of 80 to 99% by weight. 2. When a shear is applied to the adhesive layer of the meandering prevention guide attached to the endless belt at normal temperature and normal pressure, the shear load of the adhesive layer is 29.4 N.
The endless belt with a meandering prevention guide according to claim 1, which is not less than (length 4mm x 20mm width). 3. The adhesive layer of the meandering prevention guide affixed to the endless belt is 4.9 N under normal temperature and normal pressure.
(4mm x 20mm width)
The endless belt with a meandering prevention guide according to claim 1 or 2, wherein a deviation amount of the meandering prevention guide from the endless belt after a lapse of days is 1 mm or less. 4. An alkyl (meth) acrylate ester having an alkyl group having 3 to 10 carbon atoms, which is used for forming an adhesive layer in the endless belt with a meandering prevention guide according to claim 1. Monomer (A) 10
50% by weight, ethyl (meth) acrylate (B) 40-8
0% by weight, (meth) acrylic acid and / or (meth)
Meandering comprising a copolymer obtained by copolymerizing 1 to 20% by weight of methyl acrylate (C) and 1 to 10% by weight of (meth) acrylate monomer (D) having a hydroxyl group Adhesive for sticking prevention guide. 5. A pressure-sensitive adhesive composition for sticking a meandering prevention guide, comprising the pressure-sensitive adhesive of claim 4 and a crosslinking agent.