JP2003043766A - Conductive roller and method of manufacturing the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a conductive roller which has a uniform resistance value without impairing hardness and makes good images obtainable when used for an electrophotographic device, etc. SOLUTION: The conductive roller 10 which is mounted with a conductive tube 21 made of plastic on the outer peripheral surface of a cylindrical conductive porous material 11 is constituted by drying a formulated liquid of conductive latex containing conductive particles and latex between the outer peripheral surface of the cylindrical conductive porous material 11 and the inner peripheral surface of the conductive tube 21 and bonding and integrating the cylindrical conductive porous material 11 and the conductive tube 21 by dried matter 14 of the formulated liquid of the conductive latex.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a conductive roller and a manufacturing method thereof.

[0002]

2. Description of the Related Art Conventionally, as rollers used in electrophotographic devices such as charging, developing and transfer rollers, ethylene propylene rubber (EPDM), acrylonitrile butadiene rubber (NBR), chloroprene rubber (C
R), epichlorohydrin rubber (CHR), silicone rubber, polyurethane elastomer or other solid (non-foamed) or porous elastic body is attached to a metal shaft to form a roller (cylindrical shape).
The one molded into is used. In particular, the porous body is preferable because it has lower hardness than solid.

Further, in the elastic single layer, as a roller used in an electrophotographic apparatus or the like, moderate electric resistance, electrical leakage prevention, bleeding prevention of contaminants from the elastic material to the photosensitive member, abrasion resistance or Since the function relating to non-adhesiveness to toner etc. is insufficient, in order to improve those functions, a surface layer made of a material different from that of the elastic body is applied to the elastic body by a coating method such as roll coating, bar coating or spraying. Forming on the surface is performed.

In order to form a good surface layer on the elastic body by the above coating method, no holes are present on the surface of the underlying elastic body layer, and the elastic body is swollen by the solvent of the coating solution. It is necessary to prevent it from changing its outer diameter and causing deformation. Therefore, a solid (non-foamed body) is used as the elastic body, a so-called skin structure porous body with no bubbles on the surface is used, or bubbles on the surface are stopped with a solventless liquid elastomer or the like. It is necessary to use a porous body having the above-mentioned properties. In those cases, the hardness becomes higher than that in the case where the porous body is used as it is, so that the following problems occur.
That is, as the hardness of the roller increases, the nip amount of the roller with respect to the photosensitive drum or the image recording paper decreases, and in a severe case, a gap is locally generated between the recording paper and the roller, which is necessary for development and transfer. The electric function cannot be achieved. If the contact force of the roller with respect to the photosensitive drum or image recording paper is increased in order to prevent the occurrence of this problem, an unreasonable force acts on the photosensitive drum and toner to accelerate the deterioration of the photosensitive drum and the roller itself, and Permanent distortion is caused, which in turn makes the nip amount unstable, or causes a local non-contact state.

Further, in order to solve the problems associated with the above coating method, a conductive tube made of plastic which has been preformed is laminated by simply covering it with a conductive porous body having a cylindrical shape slightly larger than the tube. Roller is known, and the specification regarding the material, resistance value, shape and properties of the tube, density, hardness and resistivity of the porous body is disclosed in JP-A-3-59682.
JP-A-11-125952, JP-A-11-125
956, JP 2000-7990, and JP 2
000-75601.

[0006]

However, as a result of studies by the present inventor, in the roller laminated by simply covering the tube with the porous body, the resistance value is different in each part of the roller and the resistance value is different. Not only has poor uniformity, but also has the problem that the resistance value changes with each measurement, and when the lamination roller is used as a charging roller, discharge occurs at the interface between the tube and the porous body, that is, inside the tube. , It turned out that sufficient performance could not be exhibited. Further, these problems are that the porous body has a low hardness like ordinary flexible urethane foam, and before being covered with the porous body, the inner diameter of the tube is smaller than the outer diameter of the porous body. It was also found that the closer the outer diameter of the porous body, the more likely it is to occur.

Therefore, in view of the above points, the present invention provides a conductive roller which can obtain a uniform resistance value without impairing the hardness, and a method of manufacturing the same.

[0008]

According to a first aspect of the present invention, there is provided a conductive roller in which a plastic conductive tube is mounted on an outer peripheral surface of a cylindrical conductive porous body, and the outer peripheral surface of the cylindrical conductive porous body is provided. And the conductive latex compounded liquid containing conductive particles and latex is dried between the inner peripheral surface of the conductive tube and the dried product of the conductive latex compounded liquid,
The cylindrical conductive porous body and the conductive tube are bonded and integrated.

According to a second aspect of the present invention, in manufacturing a conductive roller in which a plastic conductive tube is attached to the outer peripheral surface of the cylindrical conductive porous body, the outer peripheral surface of the cylindrical conductive porous body and the conductive tube are manufactured. At least one of the inner peripheral surface of the, to attach a conductive latex compounding liquid containing conductive particles and latex, after covering the outer peripheral surface of the cylindrical conductive porous body with a conductive tube, and then drying. Is characterized by.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below. 1 is a perspective view of a conductive roller according to an embodiment of the present invention, and FIG. 2 is a process drawing showing an example of a manufacturing method.

A conductive roller 10 according to an embodiment of the present invention shown in FIG. 1 comprises a cylindrical conductive porous body 11 having a conductive tube 21 attached to the outer peripheral surface thereof. The shaft 31 is inserted through the center of the porous body 11.

The cylindrical conductive porous body 11 has
Is also the main body of the roller 10, and is provided with conductivity.
The elastic porous body has a required size (diameter and length
A) processed into a cylindrical shape or having no conductivity
After the elastic porous material has been processed into a tubular shape, it has conductivity.
Items such as tatami are used. As the elastic porous body,
Various things are used. As an example, ethylene-propylene
Rubber, natural rubber, isoprene rubber, butadiene rubber
Rubber, styrene-butadiene rubber, acrylonitrile rubber
Tadiene rubber, chloroprene rubber, acrylic rubber, epi
Chlorohydrin rubber, silicone rubber, fluororubber,
Polyurethane elastomer, polyester elastomer,
Polyamide elastomer, polyvinyl chloride elastomer
And so on. In addition, the elastic porous body has conductivity.
There are various methods for giving. For example, conductive
Of a conductive solution containing a conductive particle is impregnated into the elastic porous body.
The conductive particles are then dried in the elastic porous body
Attached to and fixed to, or carbon black as a raw material for elastic porous materials.
A method for producing an elastic porous body by adding a conductive substance such as
and so on. The conductive solution is a latex.
The thing which disperse | distributed the electroconductive particle can be mentioned. Na
The resistance value of the cylindrical conductive porous body 11 is 10 ²~ 1
0⁸Ω (using the electrical resistance measurement method shown in Fig. 3 below)
Is preferred).

The elastic porous body is manufactured by a known method according to the kind of the elastic porous body, for example, gas foaming, mechanical foaming, reactive gas foaming and the like. Gas foaming is a method widely used in the production of rubber, and is a method in which a foaming agent that generates gas by thermal decomposition is mixed with a raw material, and foamed and molded in an unvulcanized state. Mechanical foaming is a method used for manufacturing polyurethane elastomers,
This is a method in which a liquid elastomer of polyurethane, an organosol of vinyl chloride, a rubber latex or the like is mixed with a gas by a mechanical means such as stirring to disperse the gas into small-sized bubbles and then cured. Reactive gas foaming is a method used in the production of polyurethane, silicone elastomer, etc., and is a method of foaming by reacting a gas such as carbon dioxide or hydrogen by reacting with an active functional group. In addition, there is also a method in which a raw material is filled with a filler that is soluble in a solvent such as water, the raw material is molded, and then the filler is eluted to obtain a porous body.

The conductive tube 21 is made of plastic and has a resistance value larger than that of the conductive elastic porous body 11, and in particular, is larger than the resistance value of the conductive porous body 11.
Those having a large value of about 0 to 10 ⁵ Ω are preferable. The conductive tube 21 is manufactured by molding a plastic compound in which carbon black, a metal, a conductive metal oxide, a conductive polymer or the like is dispersed to adjust the conductivity, by a conventional general plastic molding method such as a melt extrusion method. It is performed by utilizing the processing method.

As the plastic constituting the conductive tube 21, polyethylene, polypropylene, polyvinyl chloride, polyvinylidene chloride, FEP (tetrafluoroethylene / hexafluoropropylene copolymer), PFA (tetrafluoroethylene perylene). Foroalkoxy vinyl ether), ETFE (tetrafluoroethylene / ethylene copolymer), PVDF (polyvinylidene fluoride), polyethylene terephthalate, polyamide, polyimide, polycarbonate, polystyrene, ABS, polyurethane and the like can be used.

If the thickness of the conductive tube 21 is too thick, the elasticity of the cylindrical conductive porous body 11 as the base cannot be reflected and the nip amount cannot be increased. A non-contact point is generated.
As a result, for example, when used as a charging roller, uniform charging is not performed. On the contrary, if it is too thin, the cell (pore) shape on the surface of the cylindrical conductive porous body 11 will appear in the image. Therefore, the thickness of the conductive tube 21 depends on the elastic modulus of the conductive tube 21 and is usually preferably 25 to 250 μm.

The inner diameter of the conductive tube 21 is slightly smaller than the outer diameter of the cylindrical conductive porous body 11 (usually 0.
(Small 1 to 0.3 mm) is preferable. By doing so, by covering the outer circumference of the cylindrical conductive porous body 11 while expanding the conductive tube in the radial direction, the conductive tube can be mounted on the cylindrical conductive porous body 11 without slack. .

The cylindrical conductive porous body 11 and the conductive tube 21 are dried by drying the conductive latex compound liquid dried between the outer peripheral surface of the cylindrical conductive porous body 11 and the inner peripheral surface of the conductive tube 21. It is bonded and integrated by the object 14. The conductive latex compounded liquid before drying is a mixture containing conductive particles and latex.

The conductive particles include carbonaceous particles such as carbon black and graphite, metal powder such as silver and nickel,
A simple substance of a conductive metal oxide such as tin oxide, titanium oxide or zinc oxide, or a wet coating of the conductive metal oxide with insulating fine particles such as barium sulfate as a core, a conductive metal carbide, It is used in combination of one kind or plural kinds selected from conductive metal nitride, conductive metal boride and the like. Carbon black is preferable from the viewpoint of cost, while conductive metal oxide is preferable from the viewpoint of easy control of conductivity. The combined use of carbon black and a conductive metal oxide is more preferable because both cost and ease of conductivity control can be achieved.

In the latex, fine particles of the polymer phase are stably present in a state of being dispersed in water due to the hydrophilic group of the polymer and the surfactant added. Examples of the latex include natural rubber latex, butadiene rubber latex, styrene-butadiene rubber latex, acrylonitrile-butadiene rubber latex, chloroprene rubber latex, acrylic rubber latex, polyurethane rubber latex, polyester rubber latex, fluororubber latex, and silicone rubber latex. Available.

The ratio of the conductive particles to the latex is such that the conductive particles are 5 parts with respect to 100 parts by weight of the solid content of the latex.
It is preferable that the amount is -80 parts by weight. In addition, an appropriate amount of water may be further added to the conductive latex compounded liquid in order to facilitate the adhesion work described later. Further, an ionic substance such as an inorganic salt or an organic salt may be added in a small amount so that the conductive latex compounding liquid does not become unstable.

The conductive latex compounded liquid is a cylindrical conductive porous body 11 before the conductive tube 21 is attached.
To be attached to at least one of the outer peripheral surface and the inner peripheral surface of the conductive tube 21, and then the conductive tube 21 is attached to the outer peripheral surface of the cylindrical conductive porous body 11 and then dried to obtain a cylindrical conductive material. Between the outer peripheral surface of the porous body 11 and the inner peripheral surface of the conductive tube 21, a dried product 14 of the conductive latex compound liquid is formed, and the cylindrical conductive porous body 11 and the conductive tube 2 are formed.
1 is bonded and integrated. The amount of the conductive latex compounded liquid deposited depends on the size of the cylindrical conductive porous body 11, but is 0.1 to 10 g in the cylindrical conductive porous body 11 having an outer diameter of 6 to 20 mm and a length of 220 to 320 mm. The volume resistivity of the coating film after drying is 10 ² to 10 ⁸
Ωcm (according to JIS K 6911: 1995) is preferable. The drying temperature is usually about 60 to 100 ° C.

The shaft 31 is made up of the conductive roller 10
Is used as an attachment shaft for attaching to the electrophotographic printing device and a rotary shaft when in use, and is provided in a shaft insertion hole 12 formed along the longitudinal direction at the center of the cylindrical conductive porous body 11. It is inserted and fixed to the cylindrical conductive porous body 11 with an adhesive applied to the outer peripheral surface of the shaft 31. The material of the shaft 31 is preferably metal such as stainless steel in terms of strength and conductivity. The shaft 31 may be unnecessary depending on the device in which the conductive roller 10 is mounted, and in that case, the shaft insertion hole 12 may not be formed.

Next, an example of a method of manufacturing the conductive roller 10 will be described with reference to the process chart of FIG. This production example includes a conductive porous body forming step, a shaft integrating step, a grinding step, a conductive latex compound liquid adhering step, a conductive tube adhering step, and a drying step.

In the step of forming a conductive porous body, an elastic porous body having a required size and having a shaft insertion hole provided with conductivity is formed. For example, an elastic porous body having a larger size than the target cylindrical conductive porous body 11 is impregnated with a conductive solution and then dried, or by using an elastic porous body raw material to which a conductive substance is added in advance. A conductive porous body is formed by foam molding or the like.

In the shaft integration step, the shaft 31 shown in FIG. 1 is inserted into the conductive porous body and integrated. At that time, the shaft insertion hole 12 as shown in FIG. 1 is previously formed in the conductive porous body, and the shaft 31 coated with the adhesive is inserted into the shaft insertion hole 12. Further, when the conductive porous body used is of a size capable of forming a plurality of conductive rollers, the number of shafts corresponding to the number of conductive rollers that can be formed is inserted into the conductive porous body, and The porous body is cut into a size corresponding to each conductive roller after or before the shaft is inserted.

In the grinding step, the outer circumference of the conductive porous body is ground by a grinding machine into a cylindrical shape having a required size, and the cylindrical conductive porous body 11 shown in FIG. 1 is formed. At that time, if the shaft 31 is attached to a rotating device and the conductive porous body is rotated while applying a cutting tool to the surface of the conductive porous body, grinding can be easily performed.

In the conductive latex compounding liquid adhesion step, the conductive latex compounding liquid is adhered to the outer peripheral surface of the cylindrical conductive porous body 11. The adhesion of the conductive latex compounding liquid is performed by immersing the cylindrical conductive porous body 11 in the conductive latex compounding liquid or by applying it by spraying or the like. In particular, the method of applying to the cylindrical conductive porous body by spraying is a preferable method because it is easy to adjust the amount of the conductive latex compounding liquid adhered to the outer peripheral surface of the cylindrical conductive porous body.

In the step of depositing the conductive tube, before the conductive latex compounding liquid applied to the outer peripheral surface of the cylindrical conductive porous body 11 is dried, the outer peripheral surface of the cylindrical conductive porous body 11 is formed as shown in FIG. The conductive tube 21 is covered. At that time, the inner diameter of the conductive tube 21 is made slightly smaller than the outer diameter of the cylindrical conductive porous body 11, and the conductive tube 21 is mounted on the outer peripheral surface of the cylindrical conductive porous body 11 while expanding outward. This is preferable in terms of workability and adhesion between the conductive tube 21 and the cylindrical conductive porous body 11. As a method for mounting the conductive tube 21 by spreading it outward, an appropriate method can be used. For example, the outer tube is fitted inside the inner tube having the suction hole formed therein. Using a double tube with a vacuum suction path between the tube and the outer tube, the conductive tube is sucked to the inner peripheral surface of the inner tube through the suction hole of the inner tube to expand the diameter, and in that state There may be mentioned a method in which the cylindrical conductive porous body is inserted into and the suction of the conductive tube is stopped thereafter.

In the drying step, the conductive latex compounded liquid, which is interposed between the outer peripheral surface of the cylindrical conductive porous body 11 and the inner peripheral surface of the conductive tube 21 due to the deposition of the conductive tube 21, is used. The conductive tube 21 is dried, and the conductive tube 21 is adhered and fixed to the outer peripheral surface of the cylindrical conductive porous body 11 by a dried product of the conductive latex compounded liquid formed thereby. It is easy to use a drying oven for the drying. The drying temperature is appropriately set, but is usually preferably in the range of 60 to 100 ° C.

[0031]

Example 1 Practical Example 1 100 parts by weight of acrylic latex (trade name: AE336, manufactured by JSR Corporation) was mixed with 50 parts by weight of a carbon black dispersion having a nonvolatile content of about 38% and 50 parts by weight of pure water. A wet adhesion amount of about 1500 g / m ² of the solution to an 18 × 505 × 350 mm polyester urethane foam (trade name: MF-50, manufactured by Inoac Corporation) in which a shaft insertion hole having a diameter of 7 mm was formed in the center. Was impregnated with a squeezing roller and dried at 120 ° C. for 120 minutes to form a block-shaped conductive porous body. A stainless steel shaft having an outer diameter of 8 mm and a length of 330 mm coated with a hot melt adhesive to a thickness of about 20 μm was inserted into the shaft insertion hole of the conductive porous body thus obtained, and the shaft was bonded. Then, while the shaft is attached to a rotating device and the conductive porous body is rotated, the surface of the conductive porous body is ground by a grinding device to have an outer diameter of 14.
A cylindrical conductive porous body having a roll surface length of 2 mm and a roll surface length of 316 mm was formed.

Further, a conductive latex compounding liquid having the same composition as the conductive solution is sprayed onto the outer peripheral surface of the cylindrical conductive porous body so that the adhered amount is 1.8 g, and immediately the thickness is 150 μm. , A conductive tube having an inner diameter of 13.9 mm is covered on the outer peripheral surface of the cylindrical conductive porous body, and treated by a hot air circulation drying furnace at 70 ° C. for 30 minutes, and the conductive tube is bonded to the cylindrical conductive porous body to conduct electricity. Got Laura. The conductive tube is formed from a raw material in which polyamide 12 is mixed with conductive carbon black (trade name: TB # 4501, manufactured by Tokai Carbon Co., Ltd.) at a weight ratio of 100: 20. 20 conductive rollers of Example 1 thus obtained were formed.

Example 2 Similar to Example 1, the outer diameter of the shaft adhered 14.2
A cylindrical conductive porous body of mm was formed. In addition, 100 parts by weight of the same acrylic latex as in Example 1 has a nonvolatile content of about 3 parts.
75% by weight of 8% carbon black dispersion and 50% pure water
The conductive latex compounding liquid was prepared by blending parts by weight.
This conductive latex compounded liquid was sprayed onto the outer peripheral surface of the cylindrical conductive porous body so that the amount of adhesion was 5.0 g, and immediately a conductive tube having a thickness of 150 μm and an inner diameter of 13.9 mm was cylindrically conductive. Covering the outer peripheral surface of the porous body, 70 ℃
For 30 minutes in a hot air circulation drying furnace, and the conductive tube was adhered to the cylindrical conductive porous body to obtain a conductive roller.
The conductive tube includes polyamide 12 and conductive carbon black (trade name: TB # 4501, manufactured by Tokai Carbon Co., Ltd.) and conductive tin oxide (trade name: SN-100).
P, manufactured by Ishihara Sangyo Co., Ltd.) in a weight ratio of 100: 10: 10. 20 conductive rollers of Example 2 thus obtained were formed.

Example 3 Polyether type polyol (trade name: EXCENOL 82
8, 5 parts by weight of ionic conductive agent (trade name: Cation IN, manufactured by NOF CORPORATION), silicone-based surfactant (trade name: L-520, Nippon Unicar) per 100 parts by weight of Asahi Glass Co., Ltd. 5 parts by weight, amine catalyst (trade name:
DBU-toluenesulfonate, manufactured by San-Apro Co., Ltd.
1.5 parts by weight, carbodiimide-modified MDI (trade name: M
15 parts by weight of TL-C, manufactured by Nippon Polyurethane Industry Co., Ltd., and a urethane foam composition foamed by mixing with dry air by a mechanical foaming method, and having a length of 330 mm and an outer diameter of 8 mm.
Inject it into the mold with the stainless steel shaft of
It was heated at 120 ° C. for 30 minutes for curing to obtain a conductive porous body integrated with the shaft. The density of the conductive porous body excluding the shaft was 350 kg / m ³ . This conductive porous body was ground to form a cylindrical conductive porous body having an outer diameter of 14.0 mm. Next, 1.2 g of the same conductive latex compounded liquid as in Example 1 was spray-coated on the surface of the cylindrical conductive porous body integrated with this shaft, and the thickness was immediately 150 μm.
m, an inner diameter of 13.9 mm of a conductive tube is covered on the outer peripheral surface of the cylindrical conductive porous body, and treated by a hot air circulation drying furnace at 100 ° C. for 30 minutes to bond the conductive tube to the cylindrical conductive porous body. A conductive roller was obtained. The conductive tube,
To 100 parts by weight of PVDF, 9 parts by weight of conductive carbon black (trade name: TB # 4501, manufactured by Tokai Carbon Co., Ltd.) and 15 parts by weight of conductive tin oxide (trade name: SN-100P, manufactured by Ishihara Sangyo Co., Ltd.) It is formed from the blended raw materials. 20 conductive rollers of Example 3 thus obtained were formed.

Comparative Example In Example 1, the conductive tube of the comparative example was formed by covering the outer peripheral surface of the cylindrical conductive porous body with the conductive tube without spray coating the conductive latex compounding liquid. In addition,
Twenty conductive rollers of this comparative example were also formed.

One conductive roller for each of the examples and comparative examples
For the book, the electrical resistance was measured in order to evaluate the variation in the resistance value due to the difference in the position of the roller surface. Specifically, as shown in FIG.
An electrode plate provided with a brass (brass brass) electrode P on the entire surface of an insulating smooth plate S having a size of 20 mm and a width of 230 mm is used, and each conductive roller is placed on the electrode P so as to come into contact with the electrode P. A weight of 50 g is applied to both ends of the conductive roller by a weight W or the like, and a DC voltage of 100 V is applied between the conductive shaft of the conductive roller and the electrode P by a power supply device (not shown). Rotate each time, measure the current between the conductive roller and the electrode P with an ammeter,
Each resistance value calculated from the measured current value was obtained. Table 1 shows the average values and standard deviations calculated for the 36 electric resistances obtained for each conductive roller in this way.

[0037]

[Table 1]

Further, in order to evaluate the variation in the resistance value between the conductive rollers for each of the above-mentioned Examples and Comparative Examples, the same method as described above was applied to each of the 20 conductive rollers of each Example and Comparative Example. The electric resistance of each roller was measured and the average value was calculated for each conductive roller, and the average value and standard deviation for 20 rollers of each Example and Comparative Example were further calculated with respect to the average value of each roller thus obtained. I asked. The results are shown in Table 2.

[0039]

[Table 2]

Further, each of the conductive rollers of Examples 1 and 2 was replaced with a commercially available color laser printer (Doc).
uColor1250CP, manufactured by Fuji Xerox Co., Ltd.) was used as a developing roller, and a developing process for transferring an image to a recording paper was performed. As a result, good images were obtained on all the conductive rollers of Examples 1 and 2.

[0041]

As described above, according to the conductive roller and the method of manufacturing the same of the present invention, the cylindrical conductive porous body and the conductive tube can be well bonded and integrated, and the uniform resistance can be obtained without deteriorating the hardness. A conductive roller having a value is obtained. Such a conductive roller is extremely useful in the industrial field of electrophotographic devices and the like.

[Brief description of drawings]

FIG. 1 is a perspective view of a conductive roller according to an embodiment of the present invention.

FIG. 2 is a process drawing showing an example of a manufacturing method in the present invention.

FIG. 3 is a diagram showing an outline of a method for measuring surface resistivity.

[Explanation of symbols]

10: Conductive roller 11: Cylindrical conductive porous body 12: Shaft insertion hole 14: Dried product of conductive latex compounded liquid 21: Conductive tube 31: Shaft

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Mitsuhiko Tomita             Aichi Prefecture Nagoya City Atsuta-ku 1-16-16, 1000               Inoac Corporation Ship             One business office (72) Inventor Yuji Onda             Aichi Prefecture Nagoya City Atsuta-ku 1-16-16, 1000               Inoac Corporation Ship             One business office (72) Inventor Yoshitaka Yamada             3-36 Imaike 3-36, Anjo City, Aichi Prefecture             Inoac Corporation Anjo Office             Within F-term (reference) 2H071 BA43 DA06 DA08 DA09                 2H077 AC04 AD06 FA13 FA16 FA25                 2H200 FA01 FA18 HA03 HA28 HB12                       HB45 HB46 JA03 JA25 JA26                       MA04 MA08 MA20 MB01                 3J103 AA02 AA51 EA07 FA18 GA02                       GA57 GA58 GA60 HA03 HA18                       HA20 HA41

Claims (2)

[Claims] 1. A conductive roller having a conductive tube made of plastic mounted on the outer peripheral surface of a cylindrical conductive porous body, wherein conductive material is provided between the outer peripheral surface of the cylindrical conductive porous body and the inner peripheral surface of the conductive tube. Characterized in that a conductive latex compounding liquid containing a conductive particle and a latex is dried, and the cylindrical conductive porous body and a conductive tube are bonded and integrated by a dried product of the conductive latex compounding liquid. Conductive roller. 2. When manufacturing a conductive roller in which a plastic conductive tube is mounted on the outer peripheral surface of a cylindrical conductive porous body, the outer peripheral surface of the cylindrical conductive porous body and the inner peripheral surface of the conductive tube are formed. A conductive latex compound liquid containing conductive particles and a latex is attached to at least one of them, and a conductive tube is coated on the outer peripheral surface of the cylindrical conductive porous body, and then dried. Roller manufacturing method.