JP2007041530A - Endless belt and image forming apparatus using the same - Google Patents

Endless belt and image forming apparatus using the same Download PDF

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Publication number
JP2007041530A
JP2007041530A JP2006126629A JP2006126629A JP2007041530A JP 2007041530 A JP2007041530 A JP 2007041530A JP 2006126629 A JP2006126629 A JP 2006126629A JP 2006126629 A JP2006126629 A JP 2006126629A JP 2007041530 A JP2007041530 A JP 2007041530A
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Japan
Prior art keywords
belt
prevention guide
meandering prevention
endless belt
meandering
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JP2006126629A
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JP2007041530A5 (en
Inventor
Shigeru Fukuda
Yukio Hara
Takuya Kobayashi
Maki Sudo
Yosuke Tsutsumi
幸雄 原
洋介 堤
卓也 小林
茂 福田
真樹 須藤
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Fuji Xerox Co Ltd
富士ゼロックス株式会社
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Application filed by Fuji Xerox Co Ltd, 富士ゼロックス株式会社 filed Critical Fuji Xerox Co Ltd
Priority to JP2006126629A priority patent/JP2007041530A/en
Publication of JP2007041530A publication Critical patent/JP2007041530A/en
Publication of JP2007041530A5 publication Critical patent/JP2007041530A5/ja
Application status is Pending legal-status Critical

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Abstract

An endless belt having a meandering prevention guide capable of easily and surely preventing overrunning and meandering for a long period of time without deteriorating the life of the belt, and improved reliability by using the endless belt. An image forming apparatus that can be downsized is provided.
An endless belt used in an image forming apparatus in which a belt-like meandering prevention guide is bonded to a belt body along at least one side edge in the width direction of a resin belt body formed endlessly. The meandering prevention guide has a convex portion viewed from the thickness direction at one end in the longitudinal direction of the meandering prevention guide, and a concave portion corresponding to the convex portion at the other end in the longitudinal direction of the meandering prevention guide. The convex portion and the concave portion face each other through a joint portion, and the length of the front surface of the convex portion in the width direction of the meandering prevention guide is 20 to 50% of the width of the meandering prevention guide An endless belt characterized by being provided with the same, and an image forming apparatus provided with the endless belt.
[Selection figure] None

Description

  The present invention relates to an endless belt used in an image forming apparatus using an electrophotographic system such as a copying machine or a printer, and an image forming apparatus using the same. More specifically, the present invention relates to an endless belt with a meandering prevention guide having a meandering prevention guide and capable of stable running for a long period of time, and an image forming apparatus using the same.

  As an image forming apparatus using an electrophotographic system, for example, there is an intermediate transfer type color image forming apparatus using an intermediate transfer belt. This is because an intermediate transfer belt that rotates in contact with a transfer portion of an image carrier (for example, a photosensitive drum) on which a toner image is formed by an electrophotographic process is stretched between a plurality of belt support rolls. The plurality of toner images formed on the image carrier are primarily transferred so as to overlap each other at the same position on the intermediate transfer belt, and then the toner image transferred onto the intermediate transfer belt is transferred to a sheet of paper. Are collectively transferred. The multiple toner images transferred onto the paper are then fixed by a fixing device to form a color image.

  In addition, as an image forming apparatus provided with an endless belt, there is also a so-called tandem type color image forming apparatus that uses a sheet conveying belt that carries a sheet and conveys it through a transfer portion of a plurality of image forming units. is there. This is because a plurality of image forming units are arranged side by side in order to individually form toner images of each color component, and the sheet conveying belt is placed between a plurality of belt support rolls so as to rotate in contact with the transfer portion of each image forming unit. Each toner formed in each image forming unit by being stretched and transporting the paper adsorbed and supported by the paper transport belt so as to pass through the transfer portion of each image forming unit The image is transferred onto the same sheet in order to be superimposed, and finally fixed to form a color image.

  By the way, in such a color image forming apparatus using an endless belt such as an intermediate transfer belt or a paper transport belt, the parallelism of the rotation shafts of the plurality of belt support rolls that support the endless belt and the outer diameter of the roll vary. In other words, the endless belt does not travel straight but travels in a state displaced in the axial direction of the belt support roll because the tension becomes uneven due to the change in the circumference of the endless belt itself. Sideways running and meandering may occur. For this reason, the position of each toner image that is sequentially transferred to the endless belt or sequentially to the paper carried on the endless belt may be displaced. In this case, the color formed on the paper in the end There is a problem that an image defect in which a color shift or a hue change occurs in an image occurs.

  On the other hand, the conventional seamless belt with a guide is not shown, but the meandering regulation guide made of an elastic band is adhered to the both ends of the inner peripheral surface of the seamless belt formed endlessly in the circumferential direction. Both end surfaces of each meandering regulation guide are abutted and bonded. The end face of each meandering regulation guide is cut perpendicular to the circumferential direction and the longitudinal direction.

Since the conventional seamless belt with guide is configured as described above, when the roll portion is repeatedly bent, stress concentrates on both end surfaces of the meandering restriction guide, that is, the seam, and the meandering restriction guide peels off. There is a fear. Along with the downsizing of the image forming apparatus, there is a tendency to use a roll having a small diameter, and further, stress tends to be concentrated at the joints of both end faces of the meandering regulation guide. As means for solving such a problem, a method of providing a reinforcing material in the meandering regulation guide (see, for example, Patent Document 1), a method of providing an adhesive in the joint of the meandering regulation guide (see, for example, Patent Documents 1 and 2), One way is to use a seamless meandering guide.
However, in the method of providing the reinforcing material at the joint of the meandering regulation guide, the number of parts is further increased, and in the method of providing the adhesive at the joint of the meandering regulation guide, the bonding process is increased, and a seamless meandering regulation guide is provided. In the method to be used, it is necessary to match the dimensions of the seamless belt and the meandering regulation guide with high accuracy. However, since the material undergoes shrinkage due to curing or heat shrinkage, alignment is very difficult.

By forming the opposite end faces of the meandering regulation guide made of an elastic belt of an endless belt obliquely at a predetermined angle with respect to the circumferential direction, the manufacturing process and the number of parts are not increased. The breakage from the joint of the meandering regulation guide can be suppressed by a simple method (for example, see Patent Document 3). However, if each is formed obliquely at a predetermined angle, the guide width becomes narrow at the re-tip formed obliquely of the meandering regulation guide, and if stress is concentrated on it, the durability is greatly affected. is there.
JP 2004-264522 A Japanese Patent No. 3544192 JP 2002-72768 A

  This invention is made | formed in view of the said situation, and makes the following content a subject. That is, it is an object of the present invention to provide an endless belt provided with a meandering prevention guide that can easily and reliably prevent a deviated running or meandering over a long period of time without causing a reduction in the life of the belt. Furthermore, using an endless belt with a meandering prevention guide that easily and reliably prevents the endless belt from running or meandering for a long time without deteriorating the life of the belt, reliability is improved and downsizing is possible. It is an object to provide a simple image forming apparatus.

The above problem is solved by the following means.
That is, the present invention
<1> An endless belt in which a belt-like meandering prevention guide is bonded to the belt body along at least one side edge in the width direction of the resin belt body formed on the endless, Is provided with a convex portion viewed from the thickness direction at one end in the longitudinal direction of the meandering prevention guide, and a concave portion corresponding to the convex portion at the other end in the longitudinal direction of the meandering prevention guide. Are opposed to each other through a joint portion, and the length in the width direction of the meandering prevention guide of the front end surface of the convex portion is 20 to 50% of the width of the meandering prevention guide. It is a belt.

  Distributing stress acting on the adhesive portion by providing a convex portion and a concave portion that mesh with each other when the both end portions are joined to each other in the circumferential direction of the belt body of the meandering prevention guide via the adhesive portion. The meandering prevention guide can be prevented from peeling off from the belt body. Furthermore, when the width of the surface of the tip of the convex portion is 20 to 50% of the width of the meandering prevention guide, stress concentrated on the tip of the convex portion can be dispersed.

<2> The endless belt according to <1>, wherein the convex portion is provided at an end in the width direction of the belt main body at one end in the longitudinal direction of the meandering prevention guide.
<3> The length of the portion where the tip of the convex portion overlaps with the portion other than the concave portion of the concave portion at the other end is 40 to 80% of the width of the meandering prevention guide <1> or It is an endless belt as described in <2>.

<4> The endless belt according to any one of <1> to <3>, wherein a width of the convex portion decreases toward a front end surface of the convex portion.
<5> The endless belt according to any one of <1> to <4>, wherein a width direction end portion side of the belt main body of the front end surface of the convex portion is an arcuate curve. It is.

<6> The endless belt according to any one of <1> to <5>, wherein the belt body and the meandering prevention guide are bonded with an elastic adhesive.
<7> The endless belt according to any one of <1> to <6>, wherein the belt body and the meandering prevention guide are formed of a heat-sensitive sheet-shaped adhesive. .

<8> An image forming apparatus, wherein the endless belt according to any one of <1> to <7> is rotatably supported by a plurality of support rolls.
<9> The image forming apparatus according to <8>, wherein at least one of the plurality of support rolls is a support roll having an outer diameter of 14 to 20 mm.
<10> The image forming apparatus according to <8> or <9>, wherein the endless belt is provided in contact with a plurality of units arranged in a substantially vertical direction.

  The present invention can provide an endless belt provided with a meandering prevention guide that can easily and reliably prevent shifting and meandering for a long time without deteriorating the life of the belt. Furthermore, using an endless belt with a meandering prevention guide that easily and reliably prevents the endless belt from running or meandering for a long time without deteriorating the life of the belt, reliability is improved and downsizing is possible. Image forming apparatus can be provided.

<Endless belt>
The endless belt of the present invention is an endless belt in which a belt-like meandering prevention guide is bonded to the belt body along at least one side edge in the width direction of the resin-made belt body formed endlessly. The meander prevention guide is provided with a convex portion viewed from the thickness direction at one end in the longitudinal direction of the meander prevention guide, and a concave portion corresponding to the convex portion at the other end in the longitudinal direction of the meander prevention guide, The convex part and the concave part are joined so as to face each other through the joint part, and the length in the width direction of the meandering prevention guide of the surface of the tip of the convex part is 20 to 50% of the width of the meandering prevention guide. It is characterized by that.

Hereinafter, the endless belt of the present invention will be described in detail with reference to the drawings.
As shown in FIG. 1, an endless belt 1 according to the present invention has a belt-like meandering prevention guide 3 attached to the belt main body 2 along at least one side edge in the width direction of the resin-made belt main body 2 formed endlessly. Adhered endless belt. Details of the meandering prevention guide 3 will be described later. The endless belt 1 of the present invention preferably has a meandering prevention guide 3 provided on the inner peripheral surface of the belt body 2.
As shown in FIG. 2, in the endless belt 1 of the present invention, the meandering prevention guide 3 is bonded and fixed to the belt body 2 via a heat-sensitive sheet-shaped adhesive (heat-sensitive adhesive sheet) 4. It is preferable. It is also preferable that the meandering prevention guide 3 is bonded and fixed to the belt body 2 through a layer made of an elastic adhesive.

  The endless belt 1 of the present invention can be rotatably supported by an image forming apparatus described later by a plurality of support rolls, and the outer peripheral surface of the belt body 2 carries a sheet on which a toner image is transferred. A resin endless belt, such as a paper carrying surface or a toner image carrying surface on which a toner image is formed, and a photosensitive device, an intermediate transfer device, a transfer separation device, a conveyance in an electrophotographic copying machine, a laser printer, etc. It is preferably used for a device, a charging device, a developing device and the like. Here, the material, shape, size, and the like of the belt main body constituting the endless belt of the present invention are appropriately set according to the use, function, and the like of the endless belt.

In an image forming apparatus to be described later, an endless belt 1 that is an endless belt of the present invention is stretched by a support roll 21 provided with a groove 20 for allowing (controlling) a meandering prevention guide 3 as shown in FIG. It is preferable that it is mounted. At this time, the meandering prevention guide 3 in the endless belt 1 according to the present invention is regulated along the groove 20 to prevent the endless belt 1 from running or meandering. 3A is a perspective view for showing the support roll 21 provided with the groove 20, and FIG. 3B is a support provided with the groove 20 shown in FIG. 3 is an enlarged cross-sectional view of a main part when the roll 21 is cut along the surface of the support roll 21. FIG.
Further, the endless belt 1 is preferably stretched so as to contact the side edge of the belt support roll 21 as shown in FIG. In this case, the meandering prevention guide 3 is regulated by the side end portion of the belt support roll, so that the endless belt 1 can be prevented from running or meandering.

-Belt body-
Examples of the material of the belt body 2 include polyimide resins, polyamideimide resins, polyester resins, polyurethane resins, polyamide resins, and fluorine resins. The belt body may or may not have a joint. The thickness of the belt body is usually preferably about 0.02 to 0.2 mm.
As an example of the belt main body 2, in the case of an intermediate transfer belt and a transfer conveyance belt in an image forming apparatus using an electrophotographic system, a semiconductive belt made of a polyimide resin containing a conductive agent is used. As the material of the belt body 2, for example, Toyobo Viromax HR16NN (solid content 18% by mass) can be suitably used as a polyamideimide resin.

Further, when the endless belt is used as an intermediate transfer belt or a transfer / conveying belt, a conductive filler is used as necessary in order to control the surface resistivity in the range of 1 × 10 9 Ω / □ to 1 × 10 14 Ω / □. Metal oxides such as carbon black, graphite, aluminum, copper alloys, metal oxides such as tin oxide, zinc oxide, kalim titanate, tin oxide-indium oxide or tin oxide-antimony oxide composite oxide, or polyaniline Conductive polymers such as are used alone or in combination of two or more. Among these, carbon black is preferable as the conductive filler in terms of cost. Moreover, processing aids, such as a dispersing agent and a lubricant, can be added as needed.
Here, the surface resistivity was measured in an environment of 22 ° C. and 55% RH using a Hiresta UPMCP-450 type UR probe manufactured by Dia Instruments Co., Ltd., and measured according to JIS K 6911. 24 points (3 places in the width direction × 8 places in the circumferential direction) of the belt were measured, and the average value was taken as the surface resistivity of the belt.

-Meandering prevention guide-
The meandering prevention guide 3 is adhered to the belt body 2 along at least one side edge in the width direction of the resin-made belt body 2 formed endlessly, and is attached to one end in the longitudinal direction of the meandering prevention guide 3. A convex portion viewed from the thickness direction and a concave portion corresponding to the convex portion are provided at the other end of the meandering prevention guide 3 in the longitudinal direction, and the convex portion and the concave portion face each other through the joint portion. The length of the tip surface in the width direction of the meandering prevention guide is 20 to 50% of the width of the meandering prevention guide. The shape of the meandering prevention guide may be point-symmetric with respect to the center of gravity, and may not be point-symmetric. The convex portions may be provided not only at one location at the end of the meandering prevention guide but also at multiple locations.
In addition, a junction part says the location where the other end of the meander prevention guide 3 which provided the convex part, and the other end of the meander prevention guide 3 which provided the recessed part are facing.

By having the convex portion according to the present invention and the concave portion corresponding to the convex portion, even if the endless belt is repeatedly bent at the roll portion of various image forming apparatuses, it is possible to suppress the concentration of stress in one place. Furthermore, when the ratio of the width of the front end surface of the convex portion according to the present invention is 20 to 50%, even when stress concentrates on the end portion of the meandering prevention guide, there is little problem of peeling from the end portion. As a result, the endless belt according to the present invention adheres to the meandering prevention guide 3 so that the convex portion and the concave portion face each other through the joint portion, so that the runaway and meandering are not caused to reduce the life of the belt. It can be prevented easily and reliably over a long period of time.
In addition, when a part of the front end surface of the convex portion has an arcuate curve, the ratio of the width of the front end surface of the convex portion according to the present invention is the length of the portion having the maximum width as the width of the front end surface The calculated ratio. Further, when a plurality of convex portions are provided at one end portion, the sum of the widths of the front end surfaces of the plurality of convex portions is a ratio calculated as the width of the front end surface of the convex portion according to the present invention. .

  The ratio of the width of the tip surface of the convex portion according to the present invention must be 20 to 50% as described above, preferably 35 to 50%, more preferably 40 to 49%. preferable.

  In the endless belt of the present invention, in the joint portion 7, the convex portion 5 and the concave portion 6 may be joined with an adhesive. Examples of the adhesive include an elastic adhesive described later. Further, the part using the adhesive may be the entire surface of the joint 7, but the end of the joint 7 in the width direction of the belt body 2 (preferably, the width of the meandering prevention guide 3 with respect to the width of the belt body 2 of the joint 7. It is preferable that only the length from the end in the width direction is 20 to 80%) using an adhesive.

  The convex portion provided at one end in the longitudinal direction of the belt body 2 of the meandering prevention guide 3 is a ratio of the width of the leading end surface to the width of the meandering prevention guide 3 (hereinafter referred to as “the width of the leading end surface of the convex portion according to the present invention”). Is not particularly limited as long as it is 20 to 50%. However, as shown in FIG. 4, the convex portion provided at one end of the meandering prevention guide 3 has a meandering prevention. The guide 3 is preferably provided at the end in the width direction of the belt body 2 at one end in the longitudinal direction.

  Moreover, as the shape of the front-end | tip of the convex part 5, as shown in FIG. 4, it is preferable that the width direction edge part side of the front-end | tip surface of the convex part 5 is a circular-arc-shaped curve. Absorbing the deviation at the time of joining both ends of the meandering prevention guide 3 in the circumferential direction of the belt body 2 by making the end in the width direction of the belt body 2 of the front end surface of the convex part 5 into an arcuate curve. Can do.

  On the other hand, as shown in FIG. 5, the shape of the convex portion 5 is preferably such that the width of the convex portion 5 decreases toward the tip surface of the convex portion 5. It is more preferable that the width of the convex portion 5 decreases toward the front end surface of the convex portion 5 by inclining the side surface on the width direction central portion side toward the width direction end portion side of the belt main body 2. Further, it is preferable that the width direction end portion side of the belt main body 2 in the vicinity of the end portion having the convex portion 5 of the meandering prevention guide 3 is inclined toward the width direction central portion side of the belt main body 2. The degree of inclination is not particularly specified, but by making the inclination range long as long as the production is not hindered, it is easy to absorb the shift at the time of joining and to suppress the catch. About twice as long as the length of the convex portion is realistic.

  As described above, the width of the convex portion 5 decreases toward the front end surface of the convex portion 5, or the end portion in the width direction of the belt main body 2 near the end portion having the convex portion 5 of the meandering prevention guide 3, By inclining toward the center in the width direction of the belt body 2, it is possible to obtain the effect of preventing meander control from being prevented by catching at the joint and the effect of avoiding stress concentration due to catching. In order to make this effect more prominent, it is preferable to move the endless belt 1 in the direction of arrow X in FIG.

  Furthermore, the endless belt of the present invention makes the effect of suppressing the concentration of stress in one place even when the endless belt is repeatedly bent at the roll portion of various image forming apparatuses, to meander. The preferable aspect of the circumferential direction both ends of the belt main body 2 of the prevention guide 3 is further demonstrated using FIG. In FIG. 4, A, B, C, and D viewed from the width direction of the meandering prevention guide 3 are defined as follows. A is a partial end portion other than the convex portion (convex portion 5) at one end portion, B is a partial end portion other than the concave portion (recess portion 6) at the other end portion, and C is a convex end portion at one end portion ( Convex portions 5) and D are concave end portions (concave portions 6) at the other end portions.

In the endless belt of the present invention, the length between BCs (when viewed from the width direction of the meandering prevention guide 3, the convex portion 5 at one end portion overlaps with a portion other than the concave portion (concave portion 6) at the other end portion. The length of the portion is preferably 40 to 80% of the width of the meandering prevention guide 3 (for example, when the width of the meandering prevention guide 3 is 5 mm, the length between BCs is 2 to 4 mm). More preferably, it is -70%, and it is still more preferable that it is 40-60%. If the length between the BCs is less than 40% of the width of the meandering prevention guide 3, even if the roll part is repeatedly bent, it may not be possible to suppress stress concentration at one place. If the ratio exceeds 50%, the adhesive area in the width direction is small, and the meandering prevention guide peels off due to the thrust force (shearing force) acting on the adhesion portion between the belt body 2 and the meandering prevention guide 3. May occur.
The length between the BDs is preferably longer than the length between the ABs, and the difference between the length between the BDs and the length between the ABs is 40 to 80% of the width of the meander prevention guide 3 (for example, the meander prevention guide 3 Is 5 mm, the difference between the length between BD and the length between AB is preferably 2 to 4 mm).

The length between AD is preferably 120 to 240% of the width of the meander prevention guide 3 (for example, when the width of the meander prevention guide 3 is 5 mm, the length between AD is 6 to 12 mm), and 140 to More preferably, it is 220% (7 to 11 mm).
The length between AB is preferably 0 to 80% of the width of the meander prevention guide 3 (for example, when the width of the meander prevention guide 3 is 5 mm, the length between AB is 0 to 4 mm). More preferably, it is 60% (0.5-3 mm).
The length between the BDs is preferably 80 to 200% of the width of the meandering prevention guide 3 (for example, when the width of the meandering prevention guide 3 is 5 mm, the length between AB is 4 to 10 mm). More preferably, it is 150% (6.5 to 7.5 mm).

  As shown in FIG. 5, when the width of the convex portion 5 decreases toward the tip surface of the convex portion 5, the width of the tip surface of the convex portion 5 becomes the width of the meandering prevention guide 3. On the other hand, it is preferably 7-30%, more preferably 10-20%. Further, the end of the belt body 2 in the vicinity of the end of the meandering prevention guide 3 having the protrusion 5 is inclined toward the center of the belt body 2 in the width direction. The width in the vicinity of the part is preferably reduced by 7 to 30%, more preferably 10 to 20% with respect to the width of the meandering prevention guide 3.

  When a shifting force is generated in which the belt body 2 tries to move in the axial direction of the belt support roll, a reaction force (stress) having the same strength against the shifting force is directly applied to the meandering prevention guide 3. From the viewpoint that this stress can be dispersed and absorbed to some extent in the meandering prevention guide 3, the meandering prevention guide 3 is preferably an elastic member having a durometer hardness of A60 / S to A90 / S, and particularly preferably a durometer. Hardness is A60 / S to A80 /. Here, the durometer hardness is based on JIS K6253, the meandering prevention guide is 6 mm thick, and the standard hardness is measured using a type A durometer. When the meandering prevention guide is less than 6 mm thick, the meandering prevention guide is laminated and measured so as to have a thickness of 6 mm.

  As the material of the elastic member, an elastic body having an appropriate hardness such as polyurethane, neoprene rubber, polyurethane rubber, silicone rubber, polyester elastomer, chloroprene rubber, nitrile rubber or the like can be used. Among these, polyurethane rubber and silicone rubber are particularly preferably used in consideration of electrical insulation, moisture resistance, solvent resistance, ozone resistance, heat resistance, and wear resistance.

  In the present invention, the shape of the meandering prevention guide 3 can be appropriately determined depending on the use conditions of the endless belt, etc., but the meandering prevention guide 3 has a substantially constant width except for the vicinity of the end portion having the convex portion 5. The width is preferably from 1 to 10 mm, particularly preferably from 4 to 7 mm, from the viewpoints of the effect of preventing meandering and durability. The thickness is not particularly limited, but is preferably 1 to 5 mm, particularly preferably 3 to 5 mm, from the viewpoints of the meandering prevention effect and durability.

<Elastic adhesive>
The elastic adhesive used in the present invention refers to an adhesive having a durometer hardness in the range of A30 / S to A50 / S after the curing reaction, and is mainly composed of an acrylic-modified silicone polymer manufactured by Cemedine Co., Ltd. -XNo8008, Cyflex 100 mainly composed of specially modified silicone polymer manufactured by Konishi Co., Ltd. can be mentioned, and acrylic modified silicone polymer manufactured by Cemedine Co., Ltd. Super-X No. 8008 is preferably used.

<Heat-sensitive adhesive sheet>
As shown in FIG. 2, the heat-sensitive adhesive sheet 4 used in the present invention is excellent in adhesiveness with the belt body 2 and the meandering prevention guide 3 to be used. The adhesive is not particularly limited as long as it is an adhesive capable of obtaining peel strength. For example, it is possible to use an adhesive mainly composed of a resin material such as acrylic, silicon, natural or synthetic rubber, urethane, synthetic resin such as vinyl chloride / vinyl acetate copolymer.
Specific examples thereof include polyester adhesive sheets GM-913 and GM-920 manufactured by Toyobo Co., Ltd., and polyester adhesive sheets D3600 manufactured by Sony Chemical Corporation. The polyester adhesive sheet D3600 manufactured by Sony Chemical Co., Ltd. and the polyester adhesive sheet GM-920 manufactured by Toyobo Co., Ltd. are preferably used based on the adhesive strength with the belt base material.

  The thickness of the layer made of the elastic adhesive or the heat-sensitive adhesive sheet 4 is preferably 0.01 to 0.3 mm, and more preferably 0.02 to 0.05 mm. When the thickness of the elastic adhesive layer or the heat-sensitive adhesive layer 4 is less than 0.01 mm, uniform adhesive strength may not be obtained. Sometimes the pressure applied to the meandering prevention guide 3 may be displaced.

The meandering prevention guide 3 is affixed to the belt main body 2 using the elastic adhesive layer or the heat-sensitive adhesive sheet 4. The belt main body 2 and the meandering prevention guide 3 are pasted while the belt main body 2 is flat. After that, the end portions of the belt main body 2 may be bonded together, or the meander prevention guide 3 may be bonded after the belt main body 2 is formed in an annular shape.
The endless belt 1 of the present invention is preferably one in which a meandering prevention guide 3 is attached to a resin belt body 2 via a layer made of the elastic adhesive or a heat-sensitive adhesive sheet 4. .

  In FIG. 1, the meandering prevention guide 3 is affixed to the inner surface of the belt body 2, but the affixing surface of the meandering prevention guide 3 depends on the application to which the endless belt 1 is applied. You may stick to the side. The meandering prevention guide 3 is preferably provided on the entire circumference from the viewpoint of the reinforcing effect of the endless belt 1.

  The meandering prevention guide 3 is manufactured by manufacturing a big mold having both ends provided with desired convex parts, and placing the material of the meandering prevention guide on the big mold so as to have a desired thickness, Can be obtained.

The method for sticking the meandering prevention guide 3 to the belt body 2 is not particularly limited, but generally, in the case of adhesion by the heat sensitive adhesive sheet 4, the heat sensitive adhesive sheet 4 is attached to the meandering prevention guide 3. After being applied with heat and pressure, the release paper is peeled off, and then applied to the belt body 2 with heat and pressure.
Further, in the case of adhesion by a layer made of an elastic adhesive, the elastic adhesive is applied to the meandering prevention guide 3, and then integrated with the belt main body 2 by being pressed against each other to produce the endless belt 1. To do.

  In addition, it is important to bond without bubbles, and usually use a method such as bonding with a hand roller, rubber roller, press, etc., bonding under reduced pressure, bonding under pressure, etc. Can do. Further, the surface of the meandering prevention guide 3 or the belt main body 2 may be subjected to corona treatment, primer treatment, aging, or the like to improve the adhesive force.

-Thrust peel strength-
In the endless belt 1 of the present invention, the thrust peel strength between the bonded belt body 2 and the meandering prevention guide 3 is preferably 5 N / mm or more, and particularly preferably 10 N / mm or more and 20 N / mm or less. When the thrust peel strength is 5 N / mm or more, problems such as displacement of the meandering prevention guide 3 and occurrence of peeling due to long-time driving of the endless belt 1 are reduced. Further, when the thrust peel strength is 20 N / mm or less, problems such as breakage of the endless belt 1 due to the shearing force acting on the interface of the belt main body / adhesive layer / meander prevention guide are reduced when the endless belt is running. preferable.
A method for measuring the thrust peel strength will be described below. The measurement of the thrust peel strength and the measurement of the T-type peel strength described later are performed under the condition of 22 ° C.-55% RH.

6A and 6B are explanatory diagrams of the thrust peel test. FIG. 6A is a plan view showing the test piece 40, and FIG. 6B is a view of the test piece 40 viewed from the direction of arrow D in FIG. 6A. FIG. 6C is an explanatory view of the test method, showing a state before the test piece 40 is inserted into the belt fixing member 42, and FIG. 6D is a diagram showing the test piece 40 attached to the belt fixing member 42. The figure which shows the state inserted, FIG.6 (E) is a longitudinal cross-sectional enlarged view of FIG.6 (D).
As shown in FIG. 6 (A), the endless belt 1 is cut to produce a test piece 40 of 30 mm in the Y direction and 50 mm in the X direction on the drawing. Further, as shown in FIGS. 6C to 4E, the width W2 of the belt fixing member 42 used for the thrust peel strength test is 10 mm, and the belt main body through groove 44 and the meandering prevention guide penetration are formed on the side surface. A groove 46 is formed. As shown in FIG. 6 (D), the belt main body 2 portion and the meandering prevention guide 3 portion of the test piece 40 are respectively formed in a belt main body through groove 44 and a meandering prevention guide through groove 46 provided on the side surface of the belt fixing member 42. insert. After inserting the test piece 40 into the belt fixing member 42, the test piece 40 is pulled at a speed of 10 mm / min in the direction of arrow E shown in FIG. At that time, a thrust force (shearing force) acts on the bonding portion between the belt body 2 and the meandering prevention guide 3.
The force P2 (N) when the belt body 2 and the meandering prevention guide 3 are peeled is measured, and the thrust peel strength (P2 //) is determined from the measured P2 (N) and the width W2 (10 mm) of the fixing member 40. W2) (N / mm) is calculated.

-T-type peel strength-
In the endless belt 1 of the present invention, the T-type peel strength between the belt body 2 and the meandering prevention guide 3 attached by an elastic adhesive or a heat-sensitive adhesive sheet is 0.8 N / mm or more and 4 N / mm or less. Is preferably 1 N / mm or more and 3 N / mm or less. When the T-type peel strength is 0.8 N / mm or more, problems such as displacement of the meandering prevention guide 3 and peeling due to long-time driving of the endless belt 1 are reduced. On the other hand, when it is 4 N / mm or less, problems such as breakage of the endless belt 1 due to the shearing force acting on the interface of the belt main body / adhesive layer / meander prevention guide during running of the endless belt are reduced.
A method for measuring the T-peel strength will be described below.

FIG. 7 is an explanatory diagram of a T-type peel test. FIG. 7A shows a portion for producing a test piece 30 of a T-type peel test. FIG. 7B shows a side view of the test piece 30. FIG. 7C is an explanatory diagram of a test method for the T-type peel test.
As shown in FIG. 7A, the belt body 2 was cut to the same width as that of the meandering prevention guide 3 having a width W1 to obtain a test piece 30 having a width W1 and a length of 50 mm. 7B-1 is a view of the test piece 30 viewed from the direction of arrow A, and FIG. 7B-2 is a view of the test piece 30 viewed from the direction of arrow B. FIG.
As shown in FIG. 7C, one end of the obtained test piece 30 is peeled off at the interface between the belt main body 2 and the meandering prevention guide 3, the belt main body 2 is fixed, and the meandering prevention guide 3 is moved in the direction of arrow C. The tensile force P1 (N) when it is pulled into a T-shape at a speed of 50 mm / min is measured. T-type peel strength (P1 / W1) (N / mm) is calculated using the measured P1 and W1.

<Image forming apparatus>
The image forming apparatus of the present invention is an image forming apparatus of a paper conveyance belt type using the endless belt of the present invention and an intermediate transfer member type image forming apparatus using the endless belt of the present invention, and the endless belt includes a plurality of endless belts. It is preferable that it is rotatably supported by a support roll and is not particularly limited. For example, a normal monocolor image forming apparatus that contains only a single color toner in a developing device, or a color image formation in which a toner image carried on an image carrier such as a photosensitive drum is sequentially subjected to primary transfer to an intermediate transfer member. Examples thereof include a tandem type color image forming apparatus in which a plurality of image carriers having developing devices for respective colors are arranged in series on an intermediate transfer member.

A color image forming apparatus that repeats primary transfer will be described below as an example of the image forming apparatus of the present invention. FIG. 8 is a schematic configuration diagram showing an example of the image forming apparatus of the present invention.
An image forming apparatus shown in FIG. 8 includes a photosensitive drum 101 as an image carrier, an intermediate transfer belt 102 as an intermediate transfer member, a bias roller 103 as a transfer electrode, a tray 104 for supplying paper as a transfer target, BK (Black) toner developing device 105, Y (yellow) toner developing device 106, M (magenta) toner developing device 107, C (cyan) toner developing device 108, belt cleaner 109, peeling claw 113, belt support roll 121, 123 and 124, a backup roller 122, a conductive roller 125, an electrode roller 126, a cleaning blade 131, a sheet bundle 141, a pickup roller 142, and a feed roller 143, and the endless belt of the present invention as the intermediate transfer belt 102. Is used.
The meandering prevention guide provided on the inner side of the intermediate transfer belt 102 is positioned along a groove provided in the belt support rolls 121, 123, and 124, or abuts against the side edges of the belt support rolls 121, 123, and 124. The intermediate transfer belt 102 is guided by the meandering prevention guide when the belt is running because it is positioned so as to contact. Therefore, the intermediate transfer belt 102 does not cause a problem of meandering when the belt is running.

  In the image forming apparatus shown in FIG. 8, the photosensitive drum 101 rotates in the direction of arrow F, and its surface is uniformly charged by a charging device (not shown). An electrostatic latent image of the first color (for example, BK) is formed on the charged photosensitive drum 101 by image writing means such as a laser writing device. The electrostatic latent image is developed with toner by the developing device 105 to form a visualized toner image T. The toner image T reaches the primary transfer portion where the conductive roller 125 is arranged by the rotation of the photosensitive drum 101, and the toner image T is statically moved by applying an electric field having a reverse polarity to the toner image T from the conductive roller 125. Primary transfer is performed by rotation of the intermediate transfer belt 102 in the direction of arrow G while being electrically attracted to the intermediate transfer belt 102.

  Similarly, a second color toner image, a third color toner image, and a fourth color toner image are sequentially formed and superimposed on the intermediate transfer belt 102 to form a multiple toner image.

  The multiple toner image transferred to the intermediate transfer belt 102 reaches the secondary transfer portion where the bias roller 103 is installed by the rotation of the intermediate transfer belt 102. The secondary transfer unit includes a bias roller 103 disposed on the surface side where the toner image of the intermediate transfer belt 102 is carried, a backup roller 122 disposed so as to face the bias roller from the back side of the intermediate transfer belt 102, and the backup. It is composed of an electrode roller 126 that rotates in pressure contact with the roller 122.

  The sheets 141 are picked up one by one from the sheet bundle accommodated in the sheet tray 104 by the pickup roller 142, and are fed at a predetermined timing between the intermediate transfer belt 102 and the bias roller 103 of the secondary transfer unit by the feed roller 143. Sent. The toner image carried on the intermediate transfer belt 102 is transferred to the fed paper 141 by the pressure contact conveyance by the bias roller 103 and the backup roller 122 and the rotation of the intermediate transfer belt 102.

  The paper 141 onto which the toner image has been transferred is peeled off from the intermediate transfer belt 102 by operating the peeling claw 113 at the retracted position until the primary transfer of the final toner image is completed, conveyed to a fixing device (not shown), and pressurized / heated. The toner image is fixed by the processing to be a permanent image. The intermediate transfer belt 102 after the transfer of the multiple toner image to the paper 141 is completed for removal of residual toner by a belt cleaner 109 provided downstream of the secondary transfer unit to prepare for the next transfer. The bias roller 103 is attached so that a cleaning blade 131 made of polyurethane or the like is always in contact with it, and foreign particles such as toner particles and paper dust adhered by transfer are removed.

In the case of transfer of a single color image, the primary transferred toner image T is immediately secondarily transferred and conveyed to the fixing device. In the case of transfer of a multicolor image by superimposing a plurality of colors, the toner image of each color is transferred to the primary transfer unit. Therefore, the rotation of the intermediate transfer belt 102 and the photosensitive drum 101 is synchronized so that the toner images of the respective colors do not shift so that they coincide with each other accurately. In the secondary transfer section, an output pressure (transfer voltage) having the same polarity as the polarity of the toner image is applied to the electrode roller 126 that is in pressure contact with the backup roller 122 disposed opposite to the bias roller 103 via the intermediate transfer belt 102. The toner image is transferred to the paper 141 by electrostatic repulsion.
As described above, an image can be formed.

Next, another example of the image forming apparatus of the present invention is shown.
The image forming apparatus shown in FIG. 9 includes units Y, M, C, and BK, a paper transport belt 206, transfer rolls 207Y, 207M, 207C, and 207BK, a paper transport roll 208 (not shown), and a fixing device 209 ( (Not shown). The endless belt of the present invention is used as the sheet conveying belt 206.
In the image forming apparatus shown in FIG. 9, units Y, M, C, and BK, and transfer rolls 207Y, 207M, 207C, and 207BK are arranged in a substantially vertical direction. The units Y, M, C, and BK are provided with photosensitive drums 201Y, 201M, 201C, and 201BK, respectively, that can rotate at a predetermined peripheral speed (process speed) in the clockwise direction of an arrow. Around the photoreceptor drums 201Y, 201M, 201C, and 201BK, there are a corotron charger (not shown), an exposure device (not shown), each color developing device (not shown), and a photoreceptor drum cleaner (not shown). Are arranged respectively.

The paper transport belt 206 is provided so as to be in contact with the units Y, M, C, and BK and the transfer rolls 207Y, 207M, 207C, and 207BK arranged in a substantially vertical direction. Since the meandering prevention guide provided inside the belt is positioned so as to abut on the side edge portions of the belt support rolls 210 and 211, the sheet conveying belt 206 is guided by the meandering prevention belt during belt running. As the belt support roll 210, a metal roll having an outer diameter of 18 mm is used. The sheet conveying belt 206 does not cause a problem of meandering when the belt travels because the meander prevention guide belt travels in the groove formed in the support roll 210.
When the endless belt of the present invention is used, even if at least one outer diameter of the belt support roll that supports the belt is 14 to 20 mm, the meandering prevention guide can be used without any problem.

  The four units Y, M, C, and BK are arranged in the order of the units Y, M, C, and BK in parallel with the sheet transport belt 206, but the order of the units BK, Y, C, and M, etc. An appropriate order can be set according to the image forming method.

  The paper transport belt 206 is rotatable by belt support rolls 210 and 211 in the counterclockwise direction indicated by the arrow at the same peripheral speed as the photosensitive drums 201Y, 201M, 201C, and 201BK. A cleaning device 214 (not shown) is provided.

  The transfer rolls 207Y, 207M, 207C, and 207BK are disposed inside the paper transport belt 206 and at positions facing the portions where the paper transport belt 206 is in contact with the photosensitive drums 201Y, 201M, 201C, and 201BK, respectively. The transfer area (nip portion) for transferring the toner image onto the paper (transfer object) 216 via the photosensitive drums 201Y, 201M, 201C, 201BK and the paper transport belt 206 is formed.

The fixing device 209 (not shown) is arranged so that it can be conveyed after passing through the respective transfer regions (nip portions) of the paper conveyance belt 206 and the photosensitive drums 201Y, 201M, 201C, and 201BK.
The paper 216 is transported to the paper transport belt 206 by the paper transport roll 208.

  In the image forming apparatus shown in FIG. 9, in the unit BK, the photosensitive drum 201BK is driven to rotate. In conjunction with this, a charging roll 202BK (not shown) is driven to uniformly charge the surface of the photosensitive drum 201BK to a predetermined polarity and potential. Next, the photosensitive drum 201BK whose surface is uniformly charged is exposed imagewise by the exposure device 203BK, and an electrostatic latent image is formed on the surface.

  Subsequently, the electrostatic latent image is developed by a black developing device 204BK (not shown). As a result, a toner image is formed on the surface of the photosensitive drum 201BK. The toner at this time may be a one-component toner or a two-component toner.

  The toner image passes through the transfer region (nip portion) between the photosensitive drum 201BK and the paper transport belt 206, and at the same time, the paper 216 is electrostatically attracted to the paper transport belt 206 and transported to the transfer region (nip portion). Then, the image is sequentially transferred onto the outer peripheral surface of the sheet 216 by the electric field formed by the transfer bias applied from the transfer roll 207BK.

Thereafter, the toner remaining on the photosensitive drum 201BK is cleaned and removed by the photosensitive drum cleaner 205BK (not shown). Then, the photosensitive drum 201BK is subjected to the next transfer cycle.
The above transfer cycle is similarly performed in the units C, M, and Y.

The paper 216 onto which the toner image has been transferred by the transfer rolls 207BK, 207C, 207M, and 207Y is further conveyed to a fixing device 209 (not shown) for fixing.
Thus, a desired image is formed on the recording paper.

  In addition, the image forming apparatus of the present invention uses the endless belt of the present invention that can prevent the meandering prevention guide from peeling off from the belt body. It can be easily and reliably prevented for a long time. Further, the endless belt of the present invention can be used while being supported by a support roll having an outer diameter of 14 to 20 mm (preferably 16 to 20 mm). Since the support roll can have a diameter of 14 to 20 mm, the image forming apparatus can be downsized.

EXAMPLES Hereinafter, although this invention is demonstrated further in detail using an Example, this invention is not limited by the following Example.
Example 1
<Preparation of belt body 2>
The belt body 2 in the present invention includes a polyamide-imide resin, a solvent-soluble polyamide-imide resin: manufactured by Toyobo Co., Ltd .: Viromax HR16NN (solid content: 18% by mass, solvent: methyl-2pyrrolidone), a conductive agent, carbon 25 parts by mass of black (Degisa Co., Ltd. Special Black 4: pH 3. 14% by mass of volatile content) is added per 100 parts by mass of the resin component, and 150 MPa using a high-pressure collision disperser (Genus Co., Ltd.). Then, while passing through an orifice having a diameter of 0.1 mm, the slurry divided into two parts was collided five times for dispersion. This liquid is applied to the outer surface of an aluminum pipe having an outer diameter of 168 mm, spin-dried at 150 ° C. for 30 minutes, and then heated at 250 ° C. for 1 hour to form a polyamideimide resin belt (belt body 2 having an outer diameter of 168 mm and a width of 368 mm). ) The surface resistivity of this belt was 1.1 × 10 12 Ω / □.

<Meander prevention guide 3>
As a material for the meandering prevention guide, a thermosetting urethane sheet (Tigers Polymer Co., Ltd. Typelen TR100-70) having a thickness of 1 mm and a JIS hardness of 70 degrees is used, as shown in FIG. The width of the convex portion 5 at one end is 2.5 mm, the length of the convex portion 5 in the longitudinal direction of the meandering prevention guide 3 is 7 mm, and other than the concave portion at the other end. A meandering prevention guide having a width of 2.5 mm and a longitudinal length of the meandering prevention guide 3 of 7 mm was produced. The length of the meandering prevention guide 3 in the longitudinal direction is adjusted so that a distance between AB described later is obtained (the same applies to the following examples and comparative examples).

<Production of endless belt with meandering prevention guide>
Super-XNo 8008 mainly composed of acrylic modified silicone polymer manufactured by Cemedine Co., Ltd. as an elastic adhesive is applied to the meander prevention guide in a thickness of 20 μm, and then the inner surface of the belt on one side of the polyamide-imide resin belt And an endless belt with a meandering prevention guide having a distance between AB in FIG. 4 of 2 mm was produced as shown in FIG. 12A.
Further, the T-type peel strength and the thrust peel strength of the meandering prevention guide manufactured under the same conditions as the obtained endless belt with the meandering prevention guide were measured by the method described above. As a result, the T-type peel strength was 1.2 N / mm, and the thrust peel strength was 8 N / mm.

(Example 2)
As a meandering prevention guide, as shown in FIG. 10 (B), the width of the convex portion 5 and the width of the portion other than the concave portion at the other end are set to 1.0 mm. As shown in FIG. 12B, a belt with a meandering prevention guide in which the distance between AB in FIG. The T-peel strength of the meandering prevention guide was 1 N / mm, and the thrust peel strength was 6 N / mm.

(Example 3)
As the meandering prevention guide, as shown in FIG. 10C, the width of the convex portion 5 and the width of the other end portion other than the concave portion are set to 2.0 mm. As shown in FIG. 12C, a belt with a meandering prevention guide in which the distance between AB in FIG. The meandering prevention guide had a T-type peel strength of 1.1 N / mm and a thrust peel strength of 7 N / mm.

Example 4
As a meandering prevention guide, as shown in FIG. 10 (D), the width of the convex portion 5 and the width of the other end portion other than the concave portion are 2.3 mm, and the respective distal end portions have a shape of R = 10 mm. As shown in FIG. 12D, a belt with a meandering prevention guide was produced in the same manner as in Example 1 except that the distance between AB in FIG. 4 was 2.3 mm. The meandering prevention guide had a T-type peel strength of 1.2 N / mm and a thrust peel strength of 8 N / mm.

(Example 5)
As a meandering prevention guide, as shown in FIG. 11 (E), the width of the root portion of the convex portion 5 is 2.3 mm, the width of the tip surface of the convex portion 5 is 1.8 mm, and other than the concave portions at the other end portions. As shown in FIG. 13 (E), a belt with a meandering prevention guide having a distance between ABs in FIG. 4 of 2 mm was produced in the same manner as in Example 1 except that the width of this part was 2.3 mm. . The meandering prevention guide had a T-type peel strength of 1.1 N / mm and a thrust peel strength of 7 N / mm.

(Example 6)
As the meandering prevention guide, as shown in FIG. 11 (F), the side edge side of the belt body 2 in the vicinity of the end portion having the convex portion 5 of the meandering prevention guide 3 is further inclined to the central part side of the belt body 2. In the same manner as in Example 5, as shown in FIG. 13 (F), a belt with a meandering prevention guide in which the distance between AB in FIG. 4 was 2 mm was manufactured. The meandering prevention guide had a T-type peel strength of 1.1 N / mm and a thrust peel strength of 7 N / mm.

(Comparative Example 1)
As a meandering prevention guide, the embodiment is the same except that the width of the convex portion is 0.8 mm as shown in FIG. 11 (G) and the distance between AB in FIG. 4 is 5 mm as shown in FIG. 13 (G). In the same manner as in No. 1, a belt with a meandering prevention guide was produced. The meandering prevention guide had a T-type peel strength of 0.6 N / mm and a thrust peel strength of 4 N / mm.

(Comparative Example 2)
As the meandering prevention guide, as shown in FIGS. 11 (H) and 13 (H), a belt with a meandering prevention guide is provided in the same manner as in Example 1 except that no protrusion is provided and the distance between AB is 3 mm. Was made. The meandering prevention guide had a T-type peel strength of 1.2 N / mm and a thrust peel strength of 8 N / mm.

(Evaluation)
Two metal rolls with an outer diameter of 25 mm are provided between two metal rolls of an outer diameter of 18 mm and a metal roll 211 with an outer diameter of 28 mm, driven by a belt having the same structure as the image forming apparatus shown in FIG. The belt with meandering prevention guides of Examples 1 to 6 and Comparative Examples 1 and 2 is suspended by applying a tension of 50 N to these four metal rolls, and the belt with meandering prevention guides is set at a rotation speed of 15 revolutions / minute. The belt was rotated and the durability of the belt with the meandering prevention guide was tested. The four metal rolls are provided with grooves for regulating the meandering prevention guide as shown in FIG. The test was terminated at 100 K rotation when the meandering-prevented belt was not broken. In Examples 5 and 6, the moving direction of the meandering prevention guide is the arrow X direction in FIGS. 12E and 12F, and the center side of the belt body 2 is the arrow Y direction.

  It was confirmed that the belts with meandering prevention guides of Examples 1 to 6 had no problem in durability even when rotated 100K. On the other hand, peeling of the belt with the meandering prevention guide of Comparative Example 1 was observed at the end of the rib at 8K rotation. In Comparative Example 2, since there was a gap in the meandering prevention guide, the belt was bent with a roll having an outer diameter of 18 mm, and the belt was broken at 1K rotation.

  Furthermore, about Examples 4-6, the said evaluation was implemented to 1000K rotation on the same conditions. As a result, in Example 4, it was recognized that the lateral behavior of the belt increased at about 400K rotation, and the belt broke at 460K rotation. Further, in Examples 5 and 6, it was confirmed that there was no problem in durability even when rotated by 1000K.

  Accordingly, the present invention provides an endless belt provided with a meandering prevention guide that can easily and reliably prevent shifting and meandering for a long time without deteriorating the life of the belt, and the endless belt. Providing an image-forming device with improved reliability and reduced size using an endless belt with a meander-prevention guide that can easily and reliably prevent shifting and meandering for a long time without deteriorating the life of the belt You can see that you can.

1 is a schematic configuration diagram of an endless belt of the present invention. It is a structure schematic diagram which shows adhesion | attachment with a belt main body and a meandering prevention guide. (A) is a perspective view for showing the support roll 21 in which the groove 20 is provided, and (B) is a cross section of the support roll 21 in which the groove 20 of (A) is provided on the surface of the support roll 21. It is a principal part expanded sectional view when doing. It is a figure for demonstrating an example of the shape of the both ends of a meander prevention guide. It is a figure for demonstrating the other example of the shape of the both ends of a meander prevention guide. It is explanatory drawing of a thrust peeling test. It is explanatory drawing of a T-type peeling test. 1 is a schematic configuration diagram illustrating an example of an image forming apparatus of the present invention. It is a schematic block diagram which shows the principal part of the other example of the image forming apparatus of this invention. It is a figure for demonstrating the shape of the meander prevention guide in Examples 1-4. It is a figure for demonstrating the shape of the meander prevention guide in Examples 5 and 6 and Comparative Examples 1 and 2. FIG. It is a figure for demonstrating the state of the junction part 7 of the meander prevention guide in Examples 1-4. It is a figure for demonstrating the state of the junction part 7 of the meander prevention guide in Examples 5 and 6 and Comparative Examples 1 and 2. FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Endless belt 2 Belt main body 3 Meander prevention guide 4 Heat sensitive adhesive sheet 5 Convex part 6 Concave part 7 Joint part 20 Groove 21 Support roll 30 Test piece 40 (for thrust peel test) Test piece 42 Belt Fixing member 44 Belt body through groove 46 Meander prevention guide through groove 102 Intermediate transfer belt 206 Paper transport belt

Claims (2)

  1. An endless belt in which a belt-like meandering prevention guide is bonded to the belt body along at least one side edge in the width direction of the resin belt body formed in an endless manner,
    The meander prevention guide is provided with a convex portion viewed from the thickness direction at one end in the longitudinal direction of the meander prevention guide, and a concave portion corresponding to the convex portion at the other end in the longitudinal direction of the meander prevention guide, The convex part and the concave part face each other through the joint part,
    An endless belt characterized in that the length of the meandering prevention guide in the width direction of the surface of the tip of the convex portion is 20 to 50% of the width of the meandering prevention guide.
  2.   An image forming apparatus comprising: the endless belt according to claim 1, which is rotatably supported by a plurality of support rolls.
JP2006126629A 2005-06-27 2006-04-28 Endless belt and image forming apparatus using the same Pending JP2007041530A (en)

Priority Applications (2)

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JP2008248177A (en) * 2007-03-30 2008-10-16 Okura Ind Co Ltd Moisture-curable urethane-based hot melt adhesive for adhering anti-meandering guide for endless belt, endless belt using the same and method for producing the endless belt
JP2008257118A (en) * 2007-04-09 2008-10-23 Fuji Xerox Co Ltd Endless belt for image forming apparatus, belt stretching device for image forming apparatus, and image forming apparatus
JP2009025631A (en) * 2007-07-20 2009-02-05 Fuji Xerox Co Ltd Endless belt, belt tensioning and laying device and image forming apparatus
JP2009103754A (en) * 2007-10-19 2009-05-14 Fuji Xerox Co Ltd Belt tubular body and image forming apparatus provided with same
JP2009205160A (en) * 2008-02-26 2009-09-10 Kolon Ind Inc Seamless tubular belt and cylinder used for manufacturing the belt, and method for manufacturing tubular belt using the cylinder
CN101923310A (en) * 2009-06-10 2010-12-22 夏普株式会社 The imaging device of transfer device and this transfer device of use
US7873311B2 (en) 2007-12-05 2011-01-18 Kabushiki Kaisha Toshiba Belt transfer device for image forming apparatus
US10357963B2 (en) 2012-03-05 2019-07-23 Landa Corporation Ltd. Digital printing process
US10357985B2 (en) 2012-03-05 2019-07-23 Landa Corporation Ltd. Printing system
US10427399B2 (en) 2015-04-14 2019-10-01 Landa Corporation Ltd. Apparatus for threading an intermediate transfer member of a printing system
US10434761B2 (en) 2012-03-05 2019-10-08 Landa Corporation Ltd. Digital printing process
US10518526B2 (en) 2012-03-05 2019-12-31 Landa Corporation Ltd. Apparatus and method for control or monitoring a printing system
US10569532B2 (en) 2012-03-05 2020-02-25 Landa Corporation Ltd. Digital printing system
US10569534B2 (en) 2012-03-05 2020-02-25 Landa Corporation Ltd. Digital printing system
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JP2002189342A (en) * 2000-12-21 2002-07-05 Gunze Ltd Seamless belt with meandering preventing guide
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JP2004184697A (en) * 2002-12-03 2004-07-02 Ricoh Co Ltd Transfer device and image forming apparatus

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JP2002167021A (en) * 2000-12-01 2002-06-11 Oki Data Corp Belt driving device and image forming device using the same
JP2002189342A (en) * 2000-12-21 2002-07-05 Gunze Ltd Seamless belt with meandering preventing guide
JP2002341671A (en) * 2001-05-16 2002-11-29 Ricoh Co Ltd Transfer and transport apparatus
JP2004184697A (en) * 2002-12-03 2004-07-02 Ricoh Co Ltd Transfer device and image forming apparatus

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Publication number Priority date Publication date Assignee Title
JP2008248177A (en) * 2007-03-30 2008-10-16 Okura Ind Co Ltd Moisture-curable urethane-based hot melt adhesive for adhering anti-meandering guide for endless belt, endless belt using the same and method for producing the endless belt
JP2008257118A (en) * 2007-04-09 2008-10-23 Fuji Xerox Co Ltd Endless belt for image forming apparatus, belt stretching device for image forming apparatus, and image forming apparatus
JP2009025631A (en) * 2007-07-20 2009-02-05 Fuji Xerox Co Ltd Endless belt, belt tensioning and laying device and image forming apparatus
JP2009103754A (en) * 2007-10-19 2009-05-14 Fuji Xerox Co Ltd Belt tubular body and image forming apparatus provided with same
US7873311B2 (en) 2007-12-05 2011-01-18 Kabushiki Kaisha Toshiba Belt transfer device for image forming apparatus
US8045905B2 (en) 2007-12-05 2011-10-25 Kabushiki Kaisha Toshiba Belt transfer device for image forming apparatus
JP2009205160A (en) * 2008-02-26 2009-09-10 Kolon Ind Inc Seamless tubular belt and cylinder used for manufacturing the belt, and method for manufacturing tubular belt using the cylinder
CN101923310A (en) * 2009-06-10 2010-12-22 夏普株式会社 The imaging device of transfer device and this transfer device of use
JP2010286570A (en) * 2009-06-10 2010-12-24 Sharp Corp Transfer device and image forming apparatus employing the same
US8095054B2 (en) 2009-06-10 2012-01-10 Sharp Kabushiki Kaisha Transfer device and image forming apparatus using the same
US10357963B2 (en) 2012-03-05 2019-07-23 Landa Corporation Ltd. Digital printing process
US10357985B2 (en) 2012-03-05 2019-07-23 Landa Corporation Ltd. Printing system
US10434761B2 (en) 2012-03-05 2019-10-08 Landa Corporation Ltd. Digital printing process
US10518526B2 (en) 2012-03-05 2019-12-31 Landa Corporation Ltd. Apparatus and method for control or monitoring a printing system
US10569532B2 (en) 2012-03-05 2020-02-25 Landa Corporation Ltd. Digital printing system
US10569534B2 (en) 2012-03-05 2020-02-25 Landa Corporation Ltd. Digital printing system
US10569533B2 (en) 2012-03-15 2020-02-25 Landa Corporation Ltd. Endless flexible belt for a printing system
US10427399B2 (en) 2015-04-14 2019-10-01 Landa Corporation Ltd. Apparatus for threading an intermediate transfer member of a printing system

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