JP2016089877A - Conductive roll for electrophotographic apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a conductive roll for an electrophotographic apparatus excellent in rust prevention performance of a core grid at low cost.SOLUTION: A conductive roll 10 for an electrophotographic apparatus includes a conductive core grid 12 comprising a base material of iron or stainless steel, and a conductive rubber elastic layer 16 comprising a conductive rubber composition containing chlorine rubber and formed on the outer periphery of the conductive core grid 12. Between the conductive core grid 12 and the conductive rubber elastic layer 16, an adhesion layer 14 comprising an adhesion composition containing a triazine compound is provided.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a conductive roll for electrophotographic equipment.

  In electrophotographic apparatuses such as copying machines, printers, and facsimiles that employ an electrophotographic system, conductive rolls such as a charging roll, a developing roll, a transfer roll, and a toner supply roll are disposed around the photosensitive drum. As an electroconductive roll, what has an electroconductive rubber elastic layer in the outer periphery of a metal core is known. For example, Patent Document 1 discloses a conductive roll having a conductive elastic layer made of an epichlorohydrin rubber base material on a core metal.

JP 2004-191960 A

  In the conductive roll, the core metal is generally required to have conductivity, and the material is not limited in this respect. However, from the viewpoint of cost and workability, the base metal is iron or stainless steel. Is often used. However, since the conductive elastic layer made of the epichlorohydrin rubber base material contains chlorine ions, there is a problem that rust is likely to be generated in the core metal made of iron or stainless steel. Although it is conceivable to suppress the generation of rust by plating the base metal of the core metal, the cost increases if the plating is made thicker in order to obtain stable rust prevention.

  The problem to be solved by the present invention is to provide a conductive roll for electrophotographic equipment which is low in cost and excellent in rust prevention of a metal core.

  In order to solve the above problems, a conductive roll for an electrophotographic apparatus according to the present invention comprises a conductive core metal made of an iron or stainless steel base material and a conductive rubber composition containing a chlorinated rubber, and the conductive roll A conductive rubber elastic layer formed on the outer periphery of the metal core, and an adhesive layer made of an adhesive composition containing a triazine compound between the conductive metal core and the conductive rubber elastic layer. Is provided.

  In this case, the adhesive of the adhesive layer is preferably one or more vulcanized adhesives selected from a phenol resin adhesive, an epoxy resin adhesive, and a nitrile rubber adhesive. .

  According to the conductive roll for electrophotographic equipment according to the present invention, since the triazine compound is contained in the adhesive layer, generation of rust of the core metal can be suppressed. In this case, since the generation of rust is not suppressed by thickly plating the base metal of the core metal, the cost can be reduced. Therefore, the core metal is excellent in rust prevention at low cost.

  In this case, when the adhesive of the adhesive layer is a specific vulcanized adhesive, the adhesion between the cored bar and the conductive rubber elastic layer is excellent.

  And in this invention, since the effect which suppresses generation | occurrence | production of rust of a core metal is high, even if it is a chlorinated rubber, generation | occurrence | production of rust of a core metal can be suppressed.

It is an external appearance perspective view of the electroconductive roll for electrophotographic apparatuses which concerns on one Embodiment of this invention. It is the sectional view on the AA line of FIG. It is a schematic diagram explaining the generation | occurrence | production process of rust.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is an external perspective view of a conductive roll for an electrophotographic apparatus according to an embodiment of the present invention, and FIG. 2 is a radial sectional view of the conductive roll for an electrophotographic apparatus according to an embodiment of the present invention. FIG. 2 is a cross-sectional view taken along line AA in FIG. 1.

  As shown in FIG. 1, a conductive roll for an electrophotographic apparatus according to an embodiment of the present invention (hereinafter sometimes simply referred to as a conductive roll 10) includes a cored bar 12 that is a shaft body, and a cored bar 12. It has an adhesive layer 14 formed on the outer periphery and a conductive rubber elastic layer 16 formed on the outer periphery of the adhesive layer 14. The adhesive layer 14 is in contact with both the core metal 12 and the conductive rubber elastic layer 16.

  The cored bar 12 is generally only required to have conductivity, and the material is not limited in this respect, but from the viewpoint of cost, workability, etc., in the present invention, iron or stainless steel is used as a base material. Is used. The metal core 12 may be composed of only a base material, or may have a structure in which one or more metal layers formed by plating or the like are formed on the surface of the base material. In this case, the metal layer is formed from the viewpoints of improving rust prevention and improving adhesion with the adhesive layer 14. From the viewpoint of cost, the cored bar 12 is preferably composed of only the base material. However, the cored bar 12 is formed on the surface of the base material from the viewpoints of excellent rust prevention and excellent adhesion to the adhesive layer 14. A configuration having one or more metal layers is preferred.

  The metal layer formed on the surface of the base material is made of a conductive metal. Examples of the metal of the metal layer include nickel. Among these, nickel is preferable from the viewpoints of cost, workability, and the like. And from a viewpoint of workability, adhesion, etc., it is preferred that the metal layer formed on the surface of the base material is formed by plating. The plating includes electroless plating and electrolytic plating, but electroless plating is preferable from the viewpoint of excellent uniformity of film thickness and few defects such as pinholes.

  The thickness of the metal layer formed on the surface of the base material is preferably relatively thick (specifically, 10 μm or more) from the viewpoints of excellent rust prevention and excellent adhesion to the adhesive layer 14. ), The cost increases accordingly, and from the viewpoint of cost, it is preferably 3 μm or less.

  The shape of the cored bar 12 is not particularly limited as long as it can form a shaft body, and may be a round bar shape made of a solid body, or a cylindrical shape hollowed out inside. Good.

  The conductive rubber elastic layer 16 is made of a conductive rubber composition containing chlorinated rubber. Chlorine rubber is contained as a main component of the rubber component of the conductive rubber composition. In general, epichlorohydrin rubber, chloroprene rubber, chlorinated butyl rubber, chlorosulfonated polyethylene rubber and the like can be mentioned. In addition to the rubber component, the conductive rubber composition can contain a conductive agent (an electronic conductive agent or an ionic conductive agent) for increasing the conductivity. In addition to rubber components, vulcanizing agents (crosslinking agents), vulcanization accelerators, vulcanization aids (crosslinking aids), extenders, reinforcing agents, processing aids, antioxidants, plasticizers, UV absorbers In addition, one or more additives such as a lubricant can be included.

  Examples of the electronic conductive agent include carbon black, graphite, potassium titanate, iron oxide, conductive titanium oxide, conductive zinc oxide, and conductive tin oxide. Examples of the ionic conductive agent include quaternary ammonium salts, borates, and surfactants. Examples of the vulcanizing agent (crosslinking agent) include sulfur, peroxide, and hydrosilyl crosslinking agent. Examples of the vulcanization aid (crosslinking aid) include zinc oxide, magnesium oxide, and hydrotalcite.

The thickness of the conductive rubber elastic layer 16 is not particularly limited, but is usually formed to about 0.1 to 10 mm, preferably 1 to 5 mm. The conductive rubber elastic layer 16 preferably has a volume resistivity within a range of 1.0 × 10 ^{5 to} 5.0 × 10 ⁸ Ω · cm from the viewpoint of excellent conductivity. The conductive rubber elastic layer 16 may be a solid non-foamed material or a foamed material such as a sponge.

  The adhesive layer 14 is made of an adhesive composition containing a triazine compound. Adhesive components of the adhesive composition include phenol resin adhesives, epoxy resin adhesives, nitrile rubber adhesives, acrylic resin adhesives, polyurethane adhesives, styrene-butadiene adhesives, and natural rubber adhesives. Examples include adhesives. As the adhesive component, only one of these may be used, or two or more of these may be used in combination.

  The adhesive component of the adhesive composition is a vulcanized adhesive from the viewpoint of being able to function as the adhesive layer 14 by being cured by heat or pressure during vulcanization of the conductive rubber elastic layer 16. preferable. Examples of the vulcanized adhesive include phenol resin-based adhesives, epoxy resin-based adhesives, and nitrile rubber-based adhesives from the above-described adhesive component. Only one of these may be used, or two or more of these may be used in combination.

  The triazine compound is a compound having a triazine skeleton, and 1,3,5-triazine having no substituent and triazine having a substituent at any one or more of the 2,4,6-positions. included. Only one of these triazine compounds may be used, or two or more of these may be used in combination. Since the triazine compound has a triazine skeleton, the triazine compound can be coordinated to iron ions, and a supplementary effect of iron ions can be expected. Examples of the substituent of the triazine having a substituent include an amino group, a vinyl group, an alkyl group, a (meth) acryloyloxyalkyl group, an alkylimidazolylalkyl group, and a mercapto group.

  Specific examples of the triazine compound include 1,3,5-triazine, 2,4-diamino-1,3,5-triazine, 2,4-diamino-6-vinyl-s-triazine, 2,4- Diamino-6-methacryloyloxyethyl-s-triazine, 2,4-diamino-6- (2'-methylimidazolyl- (1 ')) ethyl-s-triazine, 2,4-diamino-6- (2'- Undecylimidazolyl- (1 ′)) ethyl-s-triazine, 2,4-diamino-6- (2′-ethyl-4′-methylimidazolyl- (1 ′)) ethyl-s-triazine, 2,4, 6-trimercapto-s-triazine, 2-dibutylamino-4,6-dimercapto-s-triazine, 2,4,6-trimercapto-s-triazine monosodium salt, 2,4,6-trime Such as mercapto -s- triazine trisodium salt.

  Although content of a triazine compound is not specifically limited, From a viewpoint that the antirust effect of the metal core 12 is high, it is preferable that it is 0.005 mass part or more with respect to 100 mass parts of adhesive components. More preferably, it is 0.01 mass part or more, More preferably, it is 0.5 mass part or more. Moreover, it is preferable that it is 20 mass parts or less with respect to 100 mass parts of adhesive components from a viewpoint that the adhesiveness of the adhesive component of an adhesive composition can be maintained highly. More preferably, it is 7.0 mass parts or less, More preferably, it is 5.0 mass parts or less.

  In the adhesive composition, a conductive agent (an electronic conductive agent or an ionic conductive agent) for imparting conductivity can be included as necessary. Examples of the conductive agent include those listed as those that can be contained in the conductive rubber composition. Further, similarly to the conductive rubber composition, a vulcanizing agent (crosslinking agent), a vulcanization accelerator, a vulcanization aid (crosslinking aid), an extender, a reinforcing agent, a processing aid, an antioxidant, One or more additives such as a plasticizer, an ultraviolet absorber, and a lubricant can be included.

The thickness of the adhesive layer 14 is not particularly limited, but is preferably 100 μm or less from the viewpoint of increasing the influence of the volume resistivity of the adhesive layer 14. More preferably, it is 10 μm or less. Moreover, it is preferable that it is 1 micrometer or more from a viewpoint of being excellent in adhesive force. More preferably, it is 5 μm or more. The volume resistivity of the adhesive layer 14 is not particularly limited, but is in the range of 1.0 × 10 ^{2 to} 5.0 × 10 ⁵ Ω · cm from the viewpoint of excellent conductivity. It is preferable.

  The conductive roll 10 can be manufactured as follows, for example. First, the adhesive composition is applied to the outer periphery of the core metal 12. Next, the conductive rubber composition is formed into a layer on the outer periphery of the applied adhesive composition. The conductive rubber composition can be molded by extrusion molding or mold molding. The conductive rubber composition is crosslinked and cured by heating at the time of extrusion molding or mold molding. When the adhesive composition is composed of an adhesive composition using a vulcanized adhesive, the adhesive composition is also crosslinked and cured together when the conductive rubber composition is crosslinked and cured. Thereby, the electroconductive roll 10 which has the adhesive bond layer 14 and the electroconductive rubber elastic layer 16 in this order on the outer periphery of the metal core 12 is obtained.

  The adhesive composition can be adjusted in viscosity using a solvent in consideration of applicability. Examples of the solvent include methyl ethyl ketone (MEK) and methyl isobutyl ketone (MIBK).

  Since the conductive roll 10 contains the triazine compound in the adhesive layer 14, the occurrence of rust on the cored bar 12 can be suppressed. The reason why generation of rust is suppressed from the generation mechanism of rust will be described with reference to FIG.

Since the conductive rubber elastic layer 16 of the conductive roll 10 is made of a conductive rubber composition containing chlorinated rubber, hydrogen chloride is contained by dechlorination or the like. That is, the conductive rubber elastic layer 16 contains hydrogen ions (H ⁺ ) and chlorine ions (Cl ⁻ ). Further, since the chlorinated rubber has water absorption and oxygen affinity, the conductive rubber elastic layer 16 contains moisture and oxygen. Further, water is absorbed also by the contained filler.

As shown in FIG. 3A, hydrogen ions (H ⁺ ) and chlorine ions (Cl ⁻ ) in the conductive rubber elastic layer 16 contact the iron (Fe) of the core metal 12 through the adhesive layer 14. To do. Moisture and oxygen also contact the iron (Fe) of the core metal 12 through the adhesive layer 14. Then, as shown in FIG. 3B, the hydrogen ions (H ⁺ ) oxidize iron (Fe) by the oxidation action to generate iron ions (Fe ²⁺ ), and the chlorine ions (Cl ⁻ ) The action promotes the reaction between iron ions (Fe ²⁺ ) and water or oxygen to generate iron hydroxide (Fe (OH) ₃ ). Thereby, rust is generated in the cored bar 12. When rust is generated in the cored bar 12, the electrical characteristics at the generated position are different from the electrical characteristics at other positions, so that the uniformity of the electrical characteristics is impaired. Further, when rust is generated in the cored bar 12, the overall conductivity is also lowered.

Further, iron ions (Fe ²⁺ ) migrate to the conductive rubber elastic layer 16 through the adhesive layer 14. When the conductive rubber elastic layer 16 contains zinc oxide, iron ions (Fe ²⁺ ) are ion-exchanged with zinc oxide to generate zinc ions (Zn ²⁺ ). The zinc compound formed from the zinc ions (Zn ²⁺ ) appears on the surface of the conductive roll 10 and forms black spots. Although not limited to a zinc compound, when an ingredient or a compound derived from the ingredient appears (bleeds) on the surface of the conductive roll 10, the image output by the conductive roll 10 is affected.

As described above, the triazine compound can be coordinated to an iron ion by having a triazine skeleton. Iron ions are stabilized by complexing with triazine compounds. Thereby, the reaction between iron ions (Fe ²⁺ ) and water or oxygen is suppressed, generation of iron hydroxide (Fe (OH) ₃ ) is suppressed, and generation of rust on the cored bar 12 is suppressed. Further, since iron ions (Fe ²⁺ ) stop in the adhesive layer 14 due to complex formation with the triazine compound, contact of the conductive rubber elastic layer 16 with zinc oxide can be suppressed, and zinc ions (Zn ²⁺ ) and zinc compounds can be prevented. Occurrence is suppressed. Further, since iron ions (Fe ²⁺ ) are stabilized by complex formation with the triazine compound, ion exchange with zinc oxide is suppressed, and generation of zinc ions (Zn ²⁺ ) and zinc compounds is suppressed. Thereby, it can suppress that a black spot appears on the surface of the electroconductive roll 10. FIG.

Since rust occurs on the surface of the core metal 12, that is, the interface between the core metal 12 and the adhesive layer 14, iron ions (Fe ²⁺ ) are transferred to the surface of the core metal 12 (interface between the core metal 12 and the adhesive layer 14). ) To capture. For this purpose, the adhesive layer 14 in contact with the surface of the core metal 12 needs to contain a triazine compound. When the conductive rubber elastic layer 16 contains a triazine compound, it is difficult for the triazine compound to capture iron ions (Fe ²⁺ ) at the interface between the core metal 12 and the adhesive layer 14. In this sense, it is significant that the adhesive layer 14 contains a triazine compound.

In addition, since zinc oxide is contained in the conductive rubber elastic layer 16, in order to effectively suppress black spots caused by the zinc compound, the zinc oxide comes into contact with the zinc oxide before being diffused into the conductive rubber elastic layer 16. It is preferable to capture iron ions (Fe ²⁺ ) before. Also in this sense, it is significant that the triazine compound is contained in the adhesive layer 14.

  And in this invention, the effect which suppresses generation | occurrence | production of the rust of the metal core 12 and the black spot on the roll surface by the triazine compound contained in the adhesive bond layer 14 is very high. For this reason, even if it is a case where the chlorine content of chlorine-type rubber is as high as 10 mass% or more, for example, generation | occurrence | production of the rust of the metal core 12 and generation | occurrence | production of the black spot on the roll surface can be suppressed effectively.

  When the metal layer is formed on the surface of the core metal 12 by plating or the like, there is an effect of improving the rust prevention property depending on the thickness. However, the rust prevention effect decreases as the thickness of the metal layer decreases. When cost is considered, the metal layer may not be sufficiently thick. Therefore, even when the metal layer is formed on the surface of the cored bar 12 by plating or the like, it is meaningful to apply the present invention. Even when the metal layer is formed, it is difficult to completely eliminate the pinhole. Since chlorine ions and iron ions can migrate from a very small pinhole to another layer, rust of the core metal 12 and black spots on the roll surface can occur. Even when rust does not occur, black spots on the roll surface can occur in a very narrow range. Therefore, even when the metal layer is formed on the surface of the cored bar 12 by plating or the like, it is meaningful to apply the present invention.

  In the conductive roll 10, the adhesive layer 14 is provided in contact with both the core metal 12 and the conductive rubber elastic layer 16. However, in the present invention, sufficient adhesion can be ensured. For example, one or more other layers may be provided between the cored bar 12 and the adhesive layer 14 or between the adhesive layer 14 and the conductive rubber elastic layer 16. Examples of such a layer include other adhesive layers made of other adhesive compositions, etc., having a composition different from that of the adhesive composition according to the present invention (for example, an adhesive composition containing no triazine compound). Can be mentioned.

  In addition, the conductive roll 10 has a core metal 12, an adhesive layer 14, and a conductive rubber elastic layer 16. In the present invention, for reasons such as resistance adjustment and prevention of component migration, One or more other conductive rubber elastic layers may be provided between the adhesive layer 14 and the conductive rubber elastic layer 16 or on the outer periphery of the conductive rubber elastic layer 16. Further, the outer periphery of the conductive rubber elastic layer 16 may be provided with a surface layer for the purpose of protecting the surface, imparting electrical characteristics, etc. A modification treatment may be performed.

  The main material of the surface layer is not particularly limited, and examples thereof include polyamide (nylon) -based, acrylic-based, urethane-based, silicone-based, and fluorine-based polymers. These polymers may be modified. Examples of the modifying group include an N-methoxymethyl group, a silicone group, and a fluorine group.

The surface layer, for imparting conductivity, carbon black, carbon nanotubes, _{graphite, c-TiO 2, c-} ZnO, c-SnO 2 (c- means conductive.), Ion conductive agent (quaternary Conventionally known conductive agents such as ammonium salts, borates, surfactants, etc.) can be appropriately added. Moreover, you may add various additives suitably as needed.

  Surface modification methods include UV or electron beam irradiation, surface layer unsaturated bonds and surface modifiers that can react with halogens, such as isocyanate groups, hydrosilyl groups, amino groups, halogen groups, thiol groups, etc. The method of making it contact with the compound containing a reactive group can be mentioned.

  EXAMPLES Hereinafter, although this invention is demonstrated in detail using an Example, this invention is not limited to this structure.

Example 1
<Preparation of adhesive composition>
An adhesive composition is obtained by mixing 0.5 parts by mass of a triazine compound (1,3,5-triazine) with 100 parts by mass of a phenol resin-based adhesive (“Metal Rock UB” manufactured by Toyo Chemical Laboratory). It was.

<Preparation of conductive rubber composition>
Epichlorohydrin rubber (ECO) [“Hydrin T3106” manufactured by Nippon Zeon Co., Ltd.] 100 parts by mass, sulfur as a vulcanizing agent [manufactured by Tsurumi Chemical Co., Ltd.] 0.5 parts by mass, and zinc oxide 2 types [Mitsui Metal Industry Co., Ltd.] 5.0 parts by mass and hydrotalcite [Kyowa Chemical Industry Co., Ltd., trade name “DHT4A”] 10.0 parts by mass, vulcanization accelerator A [Sanshin Chemical Industry Co., Ltd.] Manufactured, trade name "Sunseller CZ" 1.0 parts by mass, vulcanization accelerator B [manufactured by Ouchi Shinsei Chemical Co., Ltd., trade name "Accel TBT"] 1.0 parts by weight, tributylethyl as an ionic conductive agent A conductive rubber composition was obtained by kneading 1.0 part by mass of ammonium sulfobinate (quaternary ammonium salt) with a kneader.

<Preparation of conductive roll>
After applying and drying the above adhesive composition on the outer periphery of the iron core with nickel plating, set the core metal coated with the adhesive composition in the mold of the pipe-shaped molding die, After injecting the conductive rubber composition into the mold, the adhesive composition and the conductive rubber composition were vulcanized and cured by heating at 180 ° C. for 30 minutes to obtain a conductive roll. The thickness of the adhesive layer was adjusted to 10 μm, and the thickness of the conductive rubber layer was adjusted to 3 mm.

(Example 2)
An adhesive composition was obtained in the same manner as in Example 1 except that the type of the triazine compound was changed, and a conductive roll was produced using this adhesive composition.
・ 2,4-Diamino-1,3,5-triazine

(Examples 3 to 4)
An adhesive composition was obtained in the same manner as in Example 1 except that the amount of the triazine compound was changed, and a conductive roll was produced using this adhesive composition.

(Examples 5-6)
Except having changed the kind of adhesive agent, it carried out similarly to Example 1, and obtained the adhesive composition, and produced the electroconductive roll using this.
・ Epoxy resin adhesive (“Metallock PH-37” manufactured by Toyo Chemical Laboratory)
・ Nitrile rubber adhesive (3M “EC776”)

(Example 7)
An adhesive composition was obtained in the same manner as in Example 1 except that the type of the chlorinated rubber was changed, and a conductive roll was produced using this adhesive composition.
・ Chloroprene rubber [Showa Denko “Shoprene GW”]

(Comparative Example 1)
A conductive roll was prepared in the same manner as in Example 1 except that the phenol resin adhesive was used as it was as the adhesive composition without mixing the triazine compound.

(Comparative Example 2)
A conductive roll was produced in the same manner as in Example 1 except that the triazine compound was not added to the adhesive composition but was added to the conductive rubber composition.

(Comparative Example 3)
A conductive roll was produced in the same manner as in Example 1 except that hydrotalcite (DHT4A) was added to the adhesive composition instead of the triazine compound.

  Each of the obtained conductive rolls was allowed to stand for 10 days in a constant temperature and humidity environment of 70 ° C. × 95% RH, and then evaluated as follows.

(Black spots)
It was visually examined whether black spots were formed on the roll surface of the conductive roll. The case where black spots were observed remarkably was “x”, the case where black spots were observed but slight and acceptable, “◯”, and the case where no black spots were observed was “◎”.

(Handling property of adhesive composition)
Aggregation of triazine compound is not observed in each prepared adhesive composition, especially good when the adhesive composition can be applied to the core metal without any problem "A", and aggregation of triazine compound is observed in the adhesive composition However, it is good that the adhesive composition can be applied to the core metal without any problem, and the triazine compound aggregates in the adhesive composition, and the adhesive composition cannot be applied to the core metal is poor. × ”. The adhesive composition was applied by brushing.

(Image evaluation)
The conductive roll after being left standing was mounted on a cartridge as a charging roll of a commercially available color laser printer, and images were taken out. A case where white spots were observed in the output image was judged as “poor” and a case where white spots were not observed in the output image was judged as “good”.

  According to the examples and comparative examples, it can be seen that the formation of black spots on the roll surface of the conductive roll placed under a predetermined condition can be suppressed by containing the triazine compound in the adhesive layer. Thereby, it turns out that it can suppress that rust generate | occur | produces on a metal core. This also confirmed that there was no effect on the image.

  In Comparative Example 2, the triazine compound is contained not in the adhesive layer but in the conductive rubber elastic layer, but this shows that there is no effect in suppressing black spots and rust. In Comparative Example 3, hydrotalcite was contained in both the adhesive layer and the conductive rubber elastic layer, but it was not effective in suppressing black spots and rust. This shows that even if hydrotalcite is contained in one of the adhesive layer and the conductive rubber elastic layer, there is no effect in suppressing black spots and rust.

  As mentioned above, although embodiment of this invention was described in detail, this invention is not limited to the said Example at all, A various change is possible in the range which does not deviate from the summary of this invention.

10 Conductive Roll for Electrophotographic Equipment 12 Core Bar 14 Adhesive Layer 16 Conductive Rubber Elastic Layer

Claims (2)

A conductive metal core made of iron or stainless steel, and
A conductive rubber composition comprising a chlorinated rubber, and a conductive rubber elastic layer formed on the outer periphery of the conductive core;
An electroconductive roll for electrophotographic equipment, wherein an adhesive layer made of an adhesive composition containing a triazine compound is provided between the conductive core metal and the conductive rubber elastic layer.   The adhesive of the adhesive layer is one or more vulcanized adhesives selected from phenol resin adhesives, epoxy resin adhesives, and nitrile rubber adhesives. Item 2. A conductive roll for electrophotographic equipment according to Item 1.

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