JP2002332111A - Seamless belt having meandering prevention guide - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a seamless belt having a meandering prevention guide that does not cause wrinkle or breakage of a belt body, by reducing delay of moisture absorption and moisture release in a part having a guide member and a reinforcing layer and exhibiting uniform size change behavior under various environments. SOLUTION: In this seamless belt having the meandering prevention guide, the guide member for preventing the meandering of the belt body bridged on the seamless belt body made of an organic polymeric material is disposed on the inner peripheral surface of the belt body. The guide member is disposed on the belt body via the reinforcing layer for reinforcing and holding the guide member, and the reinforcing layer has tensile elastic modulus not less than 500 MPa and water vapor permeability (Wh) not less than 10 g/m<2> .24 hrs.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seamless belt used for a photoreceptor, a charging device, a transfer device, a fixing device, or a transport device in an image forming apparatus or the like. The present invention relates to a seamless belt with a meandering prevention guide for a photoreceptor substrate, an intermediate transfer, a paper conveyance, a development, a fixing, and the like, which is provided between rolls.

[0002]

2. Description of the Related Art A conventional seamless belt has a reinforcing layer and a guide member adhered to a seamless belt body as disclosed in Japanese Patent Application Laid-Open No. 7-187435, for example. A (PET) film was used. Further, as the seamless belt body, a polyimide-based material has been preferably used because of its excellent mechanical properties, heat resistance, chemical resistance and the like. The reinforcing layer is located between the belt body and functions to reinforce and maintain the guide member, i.e., to prevent elongation when the guide member is attached to the belt body and to prevent the guide member from being applied when a force is applied from the width direction to the guide member. It acts to prevent twisting, etc., and reinforces and maintains its function.

[0003]

By the way, in the above-mentioned conventional seamless belt with a guide, when the belt is driven while being suspended on a plurality of rollers, wrinkles are generated on the belt body,
In a severe case, there was a problem that the seamless belt was damaged. In particular, such a problem was remarkably observed in the case where a polyimide resin material was used for the seamless belt body. The present inventors have found that such a resin material has a large volume expansion difference due to moisture absorption, so that in the belt body,
In this part where a reinforcing material layer having a small water vapor transmission rate such as a PET film is provided, the moisture absorption and desorption speed in this part is delayed as compared with the other parts. This causes wrinkles near the boundary, and when driven by a plurality of rolls, the seamless belt is damaged in severe cases. In addition, the present inventors have developed a thermosetting resin material, specifically, a thermosetting polyurea resin, a thermosetting acrylic resin, a thermosetting resin, in order to shorten the molding cycle and eliminate the use of a solvent. We are making proposals on seamless belts using cross-linked polyester resin.
Like these polyimide-based resins, the expansion due to moisture absorption was large, and it was found that the above-mentioned problems were observed.

Accordingly, the present invention has been made in view of the above problems, and eliminates delay in moisture absorption and desorption in a portion where a guide member and a reinforcing layer are provided, so that a belt body can be made uniform even in various environments. An object of the present invention is to provide a seamless belt with a meandering prevention guide which does not cause wrinkling or breakage of the belt main body by exhibiting a large dimensional change behavior.

[0005]

Means for Solving the Problems In order to solve the above-mentioned problems, the present inventors have focused on the water vapor permeability of the guide member and the reinforcing layer as described above and made various studies.
By setting the tensile elastic modulus and the water vapor transmission rate of the reinforcing layer to specific values, it has been confirmed that the moisture absorption and the moisture release delay in the portion where the guide member and the reinforcing layer are provided can be suppressed, and the above problem has been solved. is there.

More specifically, the seamless belt with a meandering prevention guide of the present invention has the following configuration. The present invention relates to a seamless belt with a meandering prevention guide in which a guide member for preventing meandering of a seamless belt body made of an organic polymer material during orbit is provided on an inner peripheral surface of the belt body. The reinforcing layer is provided on the belt body via a reinforcing layer for maintaining and reinforcing, and the reinforcing layer has a tensile modulus of elasticity of 500 MPa (JIS K 7127).
(Measurement conditions according to the test) or more, and the water vapor transmission rate (Wh) is 10 g / m ² · 24 hrs (measurement conditions according to the JIS K7129 test) or more. Here, various water vapor transmission rates of the seamless belt with a meandering prevention guide are values measured by a JIS K 7129 test, and the description of such condition setting is abbreviated hereinafter. The tensile modulus of the seamless belt with a meandering prevention guide is a value measured by a JIS K 7127 test, and hereinafter, the description of the condition setting is abbreviated.

Further, the water vapor transmission rate (Wg) in the thickness direction of the guide member of the present invention is such that the total transmission rate (Wt) of the reinforcing layer and the guide member is 10 g / m ² · 24 hr.
It is desirable that the selection be made to be s or more. Usually, the water vapor transmission rate of a laminated structure composed of different layers can be determined from the water vapor transmission rate of the member layers of each laminated structure. That is, 1 / W0 = 1 / W1 + 1 / W2
+ 1 / W3...
0 is the water vapor transmission rate of the laminated structure, and W1, W2, and W3 are the water vapor transmission rates of the member layers. Accordingly, since the water vapor transmission rate (Wt) obtained by superposing the thickness of the reinforcing layer and the guide member can be approximated to this, the total laminated transmission rate (Wt) of the reinforcing layer and the guide member is 10 g /
If you are selected to be m ² · 24hrs or more, 1 / Wt =
If 1 / Wh + 1 / Wg and Wt is 10 or more, 1/1
It is preferable that the relationship of 0 ≦ 1 / Wh + 1 / Wg is satisfied.
Specifically, when the above equation is deformed, the water vapor transmission rate (Wg) in the thickness direction of the guide member is Wg ≧ 10 Wh / (Wh-10) from the relation with the water vapor transmission rate (Wh) of the reinforcing layer. Is desirable.

The reinforcing layer of the present invention is attached to at least one of the belt body and the guide member via an adhesive, and the water vapor transmission rate (Ws) of the adhesive layer is determined by the reinforcing layer, the guide member, It is preferable that the total laminated transmittance (Wt) with the adhesive layer is selected to be 10 g / m ² · 24 hrs or more. Also in this case, as described above, when the total laminated transmittance (Wt) of the reinforcing layer, the guide member, and the adhesive layer is selected to be 10 g / m ² · 24 hrs or more, Wt is 10%. With the above, 1/10
It is sufficient that the relationship satisfies ≦ 1 / Wh + 1 / Wg + 1 / Ws.

In the seamless belt with a meandering prevention guide according to the present invention, the organic polymer material forming the seamless belt body is, in particular, a polyimide resin, a thermosetting polyurea resin, a thermosetting acrylic resin, a thermosetting resin. It is desirable that the material be selected from the non-crosslinkable polyester resin.

[0010]

Embodiments of the present invention will be described below in detail with reference to the accompanying drawings. In addition, the seamless belt with a meandering prevention guide of the present invention is not limited to the following embodiments and examples. FIG. 1 is a schematic perspective view showing an embodiment of a seamless belt with a meandering prevention guide according to the present invention. FIG. 2 is a schematic front view of a centrifugal molding apparatus for manufacturing the seamless belt with a meandering prevention guide according to the present invention. FIG. 3 is a schematic front view of a centrifugal molding apparatus for manufacturing the seamless belt with a meandering prevention guide according to the present invention.

The seamless belt with a meandering prevention guide according to the present embodiment is an endless seamless belt 1 laid between a plurality of rolls 3, as shown in FIG. The guide member 4 to be fitted into the guide groove 2 formed on the inner peripheral surface of the belt main body 5 is attached. The guide member 4 is attached with a predetermined width in a direction perpendicular to the transverse direction of the belt body 5. In FIG. 1, the thickness of the guide member 4 and the depth of the guide groove 2 are drawn in an emphasized manner to facilitate the description. Although only one guide member 4 is formed in FIG. 1, two or more guide members 4 may be formed. Also,
Although the guide member 4 is provided near the side end of the belt body 5, it may be provided at the center of the belt body 5.

As the organic polymer material constituting the seamless belt main body 5 of the present invention, ordinary thermosetting resins and thermoplastic resins are used. In particular, a temperature of 40.degree. , 48% RH environment 48
A thermosetting resin and a thermoplastic resin exhibiting a large physical property of a high hygroscopic expansion coefficient of 0.5% or more, particularly 2% or more after a lapse of time can also be suitably used.

The organic polymer material of the belt body 5 includes polyester resins such as polyethylene terephthalate (PET), polybutylene terephthalate (PBT) and polyethylene naphthalate (PEN), polyimide (PI), and polyamide imide (PAI). Thermoplastic resins such as polyimide resins, polyamide resins, fluororesins, polysulfone, polyethersulfone, polycarbonate, aramid resins, polyetheretherketone (PEEK), epoxy resins, crosslinked polyester resins, melamine resins, etc. Examples include thermosetting resins such as polyurethane resins, acrylic resins, and polyurea resins. In the present invention, in particular, by using a reinforcing layer, which will be described later, for the meandering prevention guide member 4, the guide member 4 can be used under an environment of a temperature of 40 ° C. and 80% RH.
A resin having an advantage that the coefficient of moisture absorption expansion after 8 hours is 2% or more, which can shorten the molding cycle and eliminate the use of a solvent, specifically, a thermosetting polyurea resin,
A resin selected from a thermosetting acrylic resin and a thermosetting crosslinked polyester resin can be suitably used.

In the seamless belt with a meandering prevention guide of the present invention, a certain degree of conductivity may be required, but the addition of a conductivity-imparting agent is optional. , Powders such as needle, spherical, plate, amorphous, etc. made of alloys, carbon powders such as acetylene black, Ketjen black, furnace black, graphite powders such as natural graphite, artificial graphite, expanded graphite, ceramic powders, surface Various kinds of metal-plated particles are used. The shape, size, and the like of these additives are spherical or irregular, and are desirably about 0.01 to 10 μm. The amount of the additives may be appropriately adjusted depending on desired conductivity. It is preferable to select from the range of 25% by volume. If the content is less than 1% by volume, the distance between the conductive substances becomes large and no conductivity is exhibited. If the content exceeds 25% by volume, there is a risk that the mechanical strength of the seamless belt is adversely affected.

As a method for dispersing these conductivity-imparting agents in the organic polymer material, known dispersion methods can be applied, and a mixing roll, a pressure kneader, an extruder,
A method suitable for the properties of the organic polymer material may be selected, such as a three-roll, homogenizer, ball mill, bead mill, or the like.

In addition, it is optional to add various additives such as a plasticizer, a colorant, an antistatic agent, an antioxidant, an antioxidant, a reinforcing filler, a reaction aid, and a reaction inhibitor as required. is there.

Since the guide member 4 used in the present invention is repeatedly bent while being fitted to the guide groove 2 provided on the roll 3, the guide member 4 has appropriate rubber elasticity and abrasion resistance. Desirably, urethane-based elastomers, silicone-based elastomers, fluororesin-based elastomers, styrene-based elastomers, and the like are exemplified. Urethane-based elastomers are preferred because of their excellent abrasion resistance.

The thickness of the guide member 4 is preferably from 0.1 mm to 2.0 mm, more preferably from 0.5 mm to 1 mm. If the thickness exceeds 2.0 mm, cracks are likely to be generated from the guide material portion, and 0.1 mm
If it is less than this, a sufficient meandering prevention effect cannot be obtained. The width of the guide member is preferably 2 mm to 20 mm, and 3 to 7 mm.
Is more preferred. If the width is smaller than 2 mm, it cannot withstand the stress in the lateral direction, so that a sufficient meandering preventing effect cannot be expected, and if the width is larger than 20 mm, the size and weight of the product are increased, which is impractical. .

The elastomer material as the guide member 4 has a relatively large intermolecular network structure and a water vapor transmission rate (Wg) of 1 to 100 g / 100 g / mm.
Desirably, it is about m ² · 24 hrs. In this case, the seamless belt body 5 hardly affects the moisture absorption and the moisture release.

As described above, the water vapor permeability of the laminated structure
In the case of, the water vapor transmission rate of the member layers of each laminated structure
Can be obtained. That is, the thickness of the guide member
Water vapor transmission rate (Wg) is the minimum water vapor
Air permeability (Wh) 10 g / m ^Two・ 1 order for 24hrs
ー, or more than 2 orders
10% or 1% of body water vapor transmission rate (Wt)
Only affects the degree. The thickness of the guide member
Water vapor transmission rate (Wg) in the direction
Laminated total transmittance (Wt) with guide member is 10 g / m^Two・
24hrs or more, especially 20g / m^Two・ Be more than 24hrs
It is desirable that it be selected.

In the seamless belt 1 with a meandering prevention guide according to the present embodiment, the guide member 4 is connected to the belt body 5 via the above-described reinforcing layer for reinforcing and maintaining the guide member 4.
Is provided. The reinforcing layer reinforces the meandering prevention guide member 4, and mainly prevents elongation at the time of sticking to the seamless belt body 4 and twists the guide member 4 when a lateral force is applied to the guide member 4. Because it is to prevent that, it is preferable to use a high elastic modulus material,
Specifically, it is preferable to use a material having a tensile modulus of elasticity of 500 MPa or more measured by a JIS K 7127 test.

The reinforcing layer has a water vapor transmission rate (Wh) of 10 g / m ² · 24 hrs or more, especially 20 m ² · 24 hrs or more of a water vapor permeable material in order to eliminate delay in moisture absorption and desorption of the seamless belt body. It is desirable to become. When the water vapor transmission rate (Wh) of the reinforcing layer is 10 g / m ² · 24 hrs or more, it is possible to sufficiently suppress the delay of moisture absorption and moisture release in the portion of the belt main body 5 where the reinforcing layer is provided.
Examples of such a material include a polyimide resin having a thickness of 140 μm or less, a polyamideimide resin having a thickness of 150 μm or less, a polyetherimide resin having a thickness of 160 μm or less, a polyamide resin having a thickness of 200 μm or less, and a thermosetting resin having a thickness of 10 μm or less. Examples thereof include polyurea resin and cellophane having a thickness of 10 mm or less. The upper limit of the thickness of the reinforcing layer is limited by the water vapor transmission rate as described above, but is preferably 1 mm or less because flexibility is required, and the lower limit is preferably 5 μm or more, This is because if the thickness is less than 5 μm, a sufficient reinforcing effect cannot be expected.

In order to provide the guide member 4 on the seamless belt main body 5 with a reinforcing layer interposed therebetween, the guide member 4 is attached to a reinforcing layer provided with an adhesive or an adhesive (hereinafter simply referred to as an adhesive) on both surfaces in advance. A method of sticking to a predetermined position of the seamless belt main body 5 after adjusting to a predetermined width and length,
Alternatively, a method in which a guide member is bonded and formed directly on the reinforcing layer, an adhesive layer is formed on the reinforcing layer side, and affixed to the seamless belt body 5 is exemplified, but the adhesive used here has a thickness of Is preferably 100 μm or less. When the thickness of the adhesive layer is within the range of 100 μm or less, the water vapor transmission rate (Ws) of the adhesive layer is 10,000 g / m ^2.
-About 24 hrs is desirable. Like the above-mentioned guide member 4, if the water vapor transmission rate (Ws) is about this, there is almost no influence on the delay of moisture absorption and moisture release of the seamless belt body 5. As described above, the water vapor transmission rate (Ws) of the adhesive layer is such that the total laminated transmission rate (Wt) of the reinforcing layer, the guide member, and the adhesive layer is 10 g / m ² · 24 hrs or more. In particular, it is desirable that the amount is selected to be 20 g / m ² · 24 hrs or more.

Next, a method of manufacturing the seamless belt with a meandering prevention guide according to the present embodiment will be described. First, the seamless belt body is molded. When a thermoplastic resin is selected as the organic polymer material, centrifugal molding, extrusion molding, injection molding, and the like are applicable.When a thermosetting resin is selected, centrifugal molding, RIM molding, and the like are exemplified. Centrifugal molding is applied as an optimal method because it can be applied to any material, is excellent in thickness accuracy, and has a small variation in resistance when conductivity is imparted.

In the centrifugal molding method, a fluid raw material resin is injected into a cylindrical mold, and the mold is rotated to form a layer of the fluid resin on the inner wall of the mold by the action of centrifugal force. Then, the resin is dried or heated and solidified to form a tubular resin molded product inside the mold, and the obtained tubular resin molded product is taken out.

FIGS. 2 and 3 are schematic views showing one embodiment of a centrifugal apparatus used in the centrifugal molding method. The centrifugal device 11 in FIG. 2 includes a molding die 6 and an organic resin material supply device 9. The molding die 6 has a cylindrical shape, and ring-shaped weir plates 7 are attached to both ends. The static mixer 10, which is the supply tip of the supply device 9, is inserted into the mold 6, and a predetermined organic resin material is supplied into the mold 6 from the tip of the static mixer 10. A rotating roller 8 is in contact with the outer peripheral surface of the molding die 6, and the rotating roller 8 rotates the die 6. The molding die 6 is preferably made of metal, the inside is preferably mirror-finished, and is preferably treated with a fluororesin or silicone resin or the like so that the seamless belt can be easily peeled off.

At the time of centrifugal molding, first, the above-mentioned organic polymer material is prepared.
It is preferable to adjust so as to be 0 mPa · s or less. When the thermosetting resin is used, when the viscosity of the resin itself is in this range, it can be used as it is, but when using the thermoplastic resin, or even in the thermosetting resin, when exceeding this range. Can be adjusted in viscosity by adding and dissolving and diluting an appropriate solvent. With a resin having a viscosity exceeding 50,000 mPa · s, it is difficult to level the inner wall of the mold 6 by centrifugal force. The lower limit of the resin viscosity is not particularly limited.
It is preferable to be 0 mPa · s or more in handling the material.

The organic polymer material is injected in a required amount into a mold 6 placed on four rotating rollers 8 that rotate. The injection amount of the organic polymer material may be calculated from the specific gravity of the solidified organic polymer material, the inner surface dimensions of the mold 6, and the thickness of the product, and a predetermined amount may be injected. Since the seamless belt 1 with a meandering prevention guide according to the present embodiment is required to have mechanical strength and flexibility, the thickness range is approximately 0.03 to 1.
It is selected from about 0 mm. In the mold 6, molding is performed at a required number of revolutions in order to perform leveling. After the injection of the organic polymer material, the mold 6 is heated by a suitable heater or the like to dry or cure the organic polymer material. At this time, the heating timing may be appropriately selected depending on the drying and curing conditions of the organic polymer material. When the above-mentioned drying and curing are completed, if the whole mold 6 is cooled, the resin molded product is spontaneously exfoliated due to a difference in thermal expansion between the mold and the resin molded product, and the molded product is cut into a predetermined size. The main body 5 is obtained.

Next, the guide member 4 and the reinforcing layer are prepared. First, a guide member having an adhesive layer formed on one surface is attached to the other surface of the reinforcing layer formed on the adhesive layer on one surface and release paper in that order. At this time, the length of the guide member 4 needs to be shorter than the inner circumference of the seamless belt main body 5. It is preferable that the difference from the inner circumference of the seamless belt main body 5 is 3 mm or less for the sake of simplicity. The above-described guide member 4 with a reinforcing layer is sequentially attached to a desired portion of the seamless belt main body 5 from one end, and the seamless belt with a meandering prevention guide 1 of the present embodiment can be obtained.

According to the seamless belt 1 with a meandering prevention guide of the present embodiment, even if a material having a relatively high hygroscopic expansion coefficient is used for the seamless belt body 5 made of the organic polymer material, it can be used under various environments. Since it exhibits stable dimensional behavior, the selection range of the resin material constituting the seamless belt body 5 is expanded, and the advantages of the resin material, such as high strength and high productivity, can be utilized. If this is applied, it is possible to achieve stable printing accuracy and a longer life of the device.

[0031]

Next, the present invention will be described in more detail with reference to Examples and Comparative Examples. The meandering-prevention-guided seamless belt according to the present invention is not limited to the following embodiments. Table 1 shows the components of the seamless belt with guide in each of the examples and comparative examples, and the physical properties thereof. The physical properties were measured according to the following methods.

[0032]

[Table 1]

In the belt body in Table 1, PI (polyimide): "U-varnish-A" manufactured by Ube Industries, trade name PAI (polyamideimide): "N-100" manufactured by Toyobo, trade name polyurea: " Polea R-603 '' manufactured by Ihara Chemical, trade name Acrylic resin: `` AH-600 '' (manufactured by Kyoeisha Chemical, trade name) crosslinked with peroxide Cross-linked polyester resin: `` CP resin M-12 '' manufactured by Mikuni Pharmaceutical Co., Ltd. The product name. In addition, in the reinforcing layer in Table 1, PI (polyimide): “Kapton H” manufactured by Toray Dupont Chemical Co., Ltd., cellophane: “PT S # 500” manufactured by Tocelo, trade name PET (polyethylene terephthalate): “Lumilar S- 1
"0" is a product name of Toray.

The position where the meandering prevention guide is attached is one end of the opening of the seamless belt body 5 and the guide member 4 is the JI.
A thermoplastic urethane elastomer having an SA hardness of 70, a thickness of 1.0 mm and a width of 5 mm. The water vapor transmission rate (Wg) in the thickness direction of this guide member is 100 g / m ² · 24 hrs or more. In addition, an acrylic pressure-sensitive adhesive was applied to both sides of the reinforcing layer at a thickness of 50 μm, respectively, and then bonded. The water vapor transmission rate (Ws) of the adhesive layer is 1000 g / m ² · 24 hrs
That is all.

Table 2 shows the evaluation results. The durability was evaluated by using a seamless belt with a meandering prevention guide at a temperature of 80 ° C for 12 hours.
After the time treatment, a seamless belt was suspended between two rolls of stainless steel having a diameter of 25 mm, a load of 250 g was applied per 10 mm in width, and a rate of 15 minutes per minute was obtained in a constant temperature and humidity chamber of 40 ° C. and 80% RH. It was rotated at the speed of rotation and a durability test was performed. The rotation state was checked every 1,000 rotations up to 10,000 rotations and every 10,000 rotations after exceeding 10,000 rotations, and when an abnormality was recognized, the evaluation was made using the previously checked rotation number. The durability evaluation was completed at 100,000 rotations. The molding cycle is the time required for molding the seamless belt main body 5 and is the time from the introduction of the resin material to the removal from the mold 6 after the rotation molding.

[0036]

[Table 2]

Each of the examples exhibited excellent durability in a high humidity state. On the other hand, Comparative Examples 1 to
In No. 4, a wrinkle was generated near the boundary between the guide installation portion and the non-installation portion, which was considered to be caused by the difference in moisture absorption and expansion of the belt main body, and this caused the belt to break. In Comparative Example 5, the strength of the reinforcing layer was insufficient, and the guide member came off the guide groove formed in the roll, causing breakage. The belt having the configuration of Comparative Examples 1 to 4 was heated at a temperature of 20 ° C.
When a durability test was performed in an environment of 50% RH, no break was observed at 100,000 rotations.

[0038]

As described above, according to the seamless belt with a meandering prevention guide according to the present invention, the guide member is provided on the belt body via a reinforcing layer for reinforcing and maintaining the guide member. Has a tensile modulus of 500
MPa or more and water vapor transmission rate (Wh) is 10 g
/ M ² · 24 hrs or more, by reducing the delay of moisture absorption and desorption in the portion where the guide member and the reinforcing layer are provided, so as to exhibit uniform dimensional change behavior even in various environments. In addition, wrinkles and breakage of the belt body can be prevented.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view showing an embodiment of a seamless belt with a meandering prevention guide according to the present invention.

FIG. 2 is a schematic front view of a centrifugal molding apparatus for manufacturing a seamless belt with a meandering prevention guide according to the present invention.

FIG. 3 is a schematic front view of a centrifugal molding apparatus for manufacturing a seamless belt with a meandering prevention guide according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Seamless belt with a guide 2 Guide groove | channel part 3 Roll 4 Belt body 5 Guide member 6 Mold 7 Ring-shaped weir plate 8 Rotating roller 9 Supply device of organic resin material 10 Static mixer

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme court ゛ (Reference) C08J 5/18 CEY C08J 5/18 CEY 3F024 CEZ CEZ 3F049 G03G 15/08 501 G03G 15/08 501F 4F071 15 / 16 15/16 4F100 15/20 102 15/20 102 21/00 350 21/00 350 // C08L 101: 00 C08L 101: 00 (72) Inventor Junya Ishida 4-5-2 Nihonbashi Honcho, Chuo-ku, Tokyo Shin-Etsu Polymer Co., Ltd. (72) Inventor Satoshi Odashima 4-5-2 Nihonbashi Honcho, Chuo-ku, Tokyo Shin-Etsu Polymer Co., Ltd. F-term (reference) 2H033 AA23 BA11 BA12 2H035 CB06 CF02 2H077 AD07 FA16 2H200 FA09 HB13 JC04 JC13 JC15 JC16 JC17 LA25 LC03 LC08 LC10 MA04 MA12 MA14 MA17 MA20 MB01 MC01 MC20 3F023 AA05 BA 02 3F024 BA01 BA02 CA01 CA04 CB02 DA07 DA17 3F049 AA02 BA11 BB11 LA01 LB03 4F071 AA31 AA49 AA53 AA60 AF08Y AF20Y AH16 BC01 4F100 AK01A AK25A JAK41A AK49A AK51A AK51B14 J03 BA03A04A10B AR00B AR00B

Claims (7)

[Claims] 1. A seamless belt with a meandering prevention guide, wherein a guide member for preventing meandering of a seamless belt body made of an organic polymer material when rotating is provided on an inner peripheral surface of the belt body. Is provided on the belt body via a reinforcing layer for reinforcing and maintaining the tensile strength, and the reinforcing layer has a tensile modulus of elasticity of 500 MPa (JIS K
7127 test) and water vapor transmission rate (Wh) of 10 g / m ² · 24 hrs (JIS K
A seamless belt with a meandering prevention guide, characterized in that the above conditions are satisfied. 2. The water vapor transmission rate (Wg) in the thickness direction of the guide member is such that the total transmission rate (Wt) of the reinforcing layer and the guide member is 10 g / m ² · 24 hrs (JIS).
2. The seamless belt with a meandering prevention guide according to claim 1, wherein the selection is made so as to be equal to or more than (measurement conditions according to K7129 test). 3. The reinforcing layer is attached to at least one of the belt body and the guide member via an adhesive, and a water vapor transmission rate (Ws) of the adhesive layer is determined by the reinforcing layer, the guide member, and the Laminate total transmittance with adhesive layer (W
3. The seamless belt with a meandering prevention guide according to claim ² , wherein t) is selected to be not less than 10 g / m ² · 24 hrs (measurement conditions according to JIS K7129 test). 4. The seamless belt with a meandering prevention guide according to claim 1, wherein the organic polymer material forming the seamless belt main body is a polyimide resin. 5. The seamless belt with a meandering prevention guide according to claim 1, wherein the organic polymer material forming the seamless belt body is a thermosetting polyurea resin. 6. The seamless belt with a meandering prevention guide according to claim 1, wherein the organic polymer material forming the seamless belt body is a thermosetting acrylic resin. 7. The seamless belt with a meandering prevention guide according to claim 1, wherein the organic polymer material forming the seamless belt body is a thermosetting crosslinked polyester resin. .