WO2005103834A1 - 導電性ローラ - Google Patents
導電性ローラ Download PDFInfo
- Publication number
- WO2005103834A1 WO2005103834A1 PCT/JP2005/007155 JP2005007155W WO2005103834A1 WO 2005103834 A1 WO2005103834 A1 WO 2005103834A1 JP 2005007155 W JP2005007155 W JP 2005007155W WO 2005103834 A1 WO2005103834 A1 WO 2005103834A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- component
- rubber
- conductive roller
- rubber composition
- conductive
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G15/00—Apparatus for electrographic processes using a charge pattern
- G03G15/06—Apparatus for electrographic processes using a charge pattern for developing
- G03G15/08—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer
- G03G15/0806—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer on a donor element, e.g. belt, roller
- G03G15/0818—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer on a donor element, e.g. belt, roller characterised by the structure of the donor member, e.g. surface properties
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L9/00—Compositions of homopolymers or copolymers of conjugated diene hydrocarbons
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C13/00—Rolls, drums, discs, or the like; Bearings or mountings therefor
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G15/00—Apparatus for electrographic processes using a charge pattern
- G03G15/06—Apparatus for electrographic processes using a charge pattern for developing
- G03G15/08—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer
- G03G15/0806—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer on a donor element, e.g. belt, roller
- G03G15/0808—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer on a donor element, e.g. belt, roller characterised by the developer supplying means, e.g. structure of developer supply roller
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/14—Peroxides
Definitions
- the present invention relates to a conductive roller, particularly to a conductive roller used in an electrophotographic copying apparatus such as a copying machine, a facsimile, a printer and the like.
- a contact method has been generally used instead of a corona discharge method in order to prevent generation of ozone.
- a roller-shaped conductive member that is, a conductive roller, is used as a developing roller, a transfer roller, a charging roller, a sheet feeding roller, a cleaning roller, a pressure roller for fixing, and the like. Is often used.
- the conductive roller In order to obtain a high-quality image using the image forming apparatus, the conductive roller needs to have a low hardness.
- the conductive roller has a shaft and an elastic layer provided on the outer periphery of the shaft.
- the elastic layer of the conductive roller includes a solid rubber component such as natural rubber (NR), epichlorohydrin rubber (EC ⁇ ), ethylene propylene diene rubber (EPDM), and atarilonitrinobutadiene rubber (NBR).
- a conductive agent such as carbon black, a metal oxide, or an ionic conductive agent to impart conductivity, and a large amount of a softening agent to further lower the hardness.
- the rubber composition is generally used (see Japanese Patent Application Laid-Open No. 5-117434 and International Publication No. 91Z10942).
- an object of the present invention is to solve the above-mentioned problems of the prior art, and to provide a conductive roller having a low hardness, a small compression set, and a low roller resistance so that the softener does not bleed. It is in. [0006]
- the inventors of the present invention have conducted intensive studies to achieve the above object, and as a result, a polybutadiene rubber and / or a polyisoprene rubber having a high cis-1,4-bond content have been added together with a conductive agent and a peroxide.
- the rubber composition By using a rubber composition containing a liquid polyisoprene rubber as a softening agent for the elastic layer of the conductive roller, the rubber composition has a low hardness that does not cause the softening agent to bleed on the surface and has a small compression set.
- the present inventors have found that a conductive roller having a low roller resistance can be obtained, and have completed the present invention.
- a first conductive roller according to the present invention is a conductive roller including a shaft and an elastic layer formed on the outer periphery of the shaft.
- Component (A) For polybutadiene rubber having a cis-1,4-bond content of 90% or more,
- Component (B) liquid polyisoprene rubber
- (C) component a conductive agent
- the mass ratio (A / B) of the component (A) to the component (B) is 100/30 to
- a rubber composition of 100/100 is used for the elastic layer.
- the content of the component (C): conductive agent in the rubber composition for an elastic layer is 10 to 17% by mass.
- the content of the component (D): peroxide in the rubber composition for an elastic layer is 0.5 to 1.5% by mass.
- a second conductive roller according to the present invention is a conductive roller including a shaft and an elastic layer formed on the outer periphery of the shaft.
- Component (A) For polyisoprene rubber having a cis-1,4-bond content of 90% or more,
- Component (B) liquid polyisoprene rubber
- (C) component a conductive agent
- a rubber composition having a mass ratio (A / B) of the component (A) and the component (B) of 100/30 to 100/100 is used for the elastic layer. I do.
- the content of the component (C): conductive agent in the rubber composition for an elastic layer is 10 to 20% by mass.
- the component (D): peroxide content in the rubber composition for an elastic layer is 0 to 6.0% by mass.
- a third conductive roller according to the present invention is a conductive roller including a shaft and an elastic layer formed on the outer periphery of the shaft.
- Component (A) For polybutadiene rubber and polyisoprene rubber having a cis-1,4-bond content of 90% or more,
- Component (B) liquid polyisoprene rubber
- (C) component a conductive agent
- the mass ratio (BR / IR) of the polybutadiene rubber (BR) and the polyisoprene rubber (IR) in the component (A) is 90Z10 to 60Z40, and the component ( ⁇ ) and the component ( ⁇ ) are mixed.
- a rubber composition having a mass ratio ( ⁇ ) of 100/10 to 100/40 with the component is used for the elastic layer.
- the component (D): peroxide content in the rubber composition for an elastic layer is from 0.5 to 2.0% by mass.
- the third conductive roller of the present invention has an Asker C hardness of 45 to 75. And creep [(D -D) / DX calculated from the indentation depth D measured by a Fischer hardness tester under a condition of a load of 100 N using a conical indenter and the deformation depth D after removing the load. 100%]
- the microstructure of the polybutadiene rubber and the polyisoprene rubber as the component (A) can be determined by an infrared absorption spectrum method.
- the liquid polyisoprene rubber of the component (B) is liquid at room temperature (25 ° C.).
- the component (D): peroxide is 1,1-di (t-butylperoxy) cyclohexane and / or 1,1,1-di (t -Hekisilveroxy)-
- the elastic layer has a high cis-1,4-bond content of polybutadiene rubber and / or Liquid poly (polyisoprene) rubber as a softener with conductive agent and peroxide
- a rubber composition containing soprene rubber it is possible to provide a conductive roller having a low hardness and a low compression set and a low roller resistance so that the softening agent does not bleed on the surface.
- FIG. 1 is a cross-sectional view of an example of the conductive roller of the present invention.
- FIG. 1 is a cross-sectional view of an example of the conductive roller of the present invention.
- the illustrated conductive roller 1 includes a shaft 2 and an elastic layer 3 formed on the outer periphery of the shaft 2.
- the elastic layer 3 formed on the outer periphery of the shaft 2.
- component polybutadiene rubber having a cis-1,4-bond content of 90% or more
- component liquid polyisoprene rubber
- component conductive agent
- component excess A first rubber composition comprising an oxide and a mass ratio (A / B) of the component (A) to the component (B) of 100/30 to 100/100;
- component polyisoprene rubber having a cis-1,4-bond content of 90% or more
- component liquid polyisoprene rubber
- component conductive agent
- component A second rubber composition comprising a peroxide and a mass ratio (A / B) of the component (A) and the component (B) of 100/30 to 100/100, or
- the rubber composition used for the conductive roller of the present invention contains liquid polyisoprene rubber having a higher molecular weight than a normal softener as a reactive softener, and thus was used as a softener. If there is no bleed out.
- the rubber composition used for the conductive roller of the present invention comprises a rubber component (A) component: cis-1,4- It contains polybutadiene rubber and / or polyisoprene rubber having a bond content of 90% or more. If the cis-1,4-bond content of the polybutadiene rubber or polyisoprene rubber of the component (A) is less than 90%, the polyisoprene rubber of the component (B) is compatible with the liquid polyisoprene rubber. It is considered that the conductive agent such as bon black is uniformly dispersed. As a result, the addition of a small amount of the conductive agent such as carbon black is considered to result in high resistance without forming a conductive path.
- the polybutadiene rubber of the component (A) has a Bull's bond content of S5% or less and a Mooney viscosity ML (100 ° C) in the range of 25 to 60.
- the polyisoprene rubber of the component (A) preferably has a Bull bond content of 5% or less and a Mooney viscosity ML (100 ° C) in the range of 70 to 80. . (A) of component
- Mooney viscosity ML (100.C) of polyisoprene rubber is less than 70,
- the rubber composition may use the polybutadiene rubber and the polyisoprene rubber in combination as rubber components, and may contain other rubber components as long as the object of the present invention is not impaired.
- the rubber composition used for the conductive roller of the present invention contains (B) component: liquid polyisoprene rubber as a softening agent.
- component liquid polyisoprene rubber as a softening agent.
- the polyisoprene rubber of the component (B) is a solid, carbon black tends to have a structural destruction during kneading, and good conductivity cannot be obtained.
- the liquid polyisoprene rubber of the component (B) preferably has a weight average molecular weight (Mw) of 20,000 to 50,000.
- the mass of the polybutadiene rubber or polyisoprene rubber of the component (A) and the liquid polyisoprene rubber of the component (B) is used.
- the ratio (A / B) is in the range of 100/30 to 100/100, that is, the compounding amount of the liquid polyisoprene rubber of the component (B) is 100 parts by mass of the polybutadiene rubber or the polyisoprene rubber of the component (A). In the range of 30 to 100 parts by mass.
- the amount of the liquid polyisoprene rubber (B) is less than 30 parts by mass relative to 100 parts by mass of the polybutadiene rubber or polyisoprene rubber (A), the Mooney viscosity of the rubber composition becomes too high, and the carbon black is black. The structure of the metal is destroyed, and good conductivity cannot be obtained. If it exceeds 100 parts by mass, the Mooney viscosity of the rubber composition becomes too low, and it is difficult to knead with a kneader or the like. It becomes.
- the mass ratio (A / B) of the component (A) to the component (B) is 100/10 to 100/100. That is, the amount of the component (B) is in the range of 10 to 40 parts by mass with respect to 100 parts by mass of the component (A). If the compounding amount of the liquid polyisoprene rubber of the component (B) is less than 10 parts by mass with respect to 100 parts by mass of the total of the polybutadiene rubber and the polyisoprene rubber of the component (A), the Mooney viscosity of the rubber composition becomes too high, Structural destruction of carbon black occurs, and good conductivity cannot be obtained. On the other hand, if it exceeds 40 parts by mass, the Mooney viscosity of the rubber composition becomes too low, and it becomes difficult to knead with a kneader or the like.
- the component (A) of the third rubber composition is different from the mass ratio (BR / IR) of the high cis-polybutadiene rubber (BR) and the high cis-polyisoprene rubber (IR). Is in the range of 90/10 to 60/40.
- the content of the high cis-BR in the component (A) exceeds 90% by mass, the rubber composition is deteriorated by kneading the rubber composition with a single wire, and bugs and sheet holes may be generated in the sheeting operation.
- the rubber composition may adhere to the rotor by kneading in an eder, or the sheeting work may be difficult.
- the rubber composition may adhere to the roll.
- the rubber composition further contains a component (C): a conductive agent.
- a component (C): a conductive agent By mixing a conductive agent with the rubber composition, the resistance value of the rubber composition can be appropriately adjusted, and the roller resistance of the conductive roller using the rubber composition can be adjusted to a desired range.
- the conductive roller of the present invention is, such are not particularly limited but is preferably a roller resistance 10 3 ⁇ 10 9 ⁇ .
- an electronic conductive agent such as carbon black
- examples of the carbon black include carbon black for rubber such as SAF, ISAF, HAF, FEF, GPF, SRF, FT, and MT; carbon black for color that has been subjected to oxidation treatment; pyrolytic carbon black; And conductive carbon such as acetylene black. These carbon blacks may be used alone or in combination of two or more.
- the carbon black is not particularly limited, the nitrogen adsorption specific surface area (N S
- the content of the conductive agent is preferably 10 to 17% by mass of the rubber composition. If the content of the conductive agent is less than 10% by mass in the rubber composition, the desired conductivity may not be imparted to the conductive roller having a low rubber composition conductivity. In some cases, the conductivity becomes too high and a good image cannot be obtained.
- the content of the conductive agent is preferably 10 to 20% by mass of the rubber composition. If the content of the conductive agent is less than 10% by mass in the rubber composition, the desired conductivity may not be imparted to the conductive roller having a low conductivity of the rubber composition. In some cases, the conductivity becomes too high and a good image cannot be obtained.
- the content of the conductive agent is preferably 12.4 to 20.1% by mass of the rubber composition. If the content of the conductive agent is less than 12.4% by mass in the rubber composition, the desired conductivity may not be imparted to the conductive roller having low rubber composition conductivity. May be too high to obtain a good image.
- the rubber composition further contains a component (D): a peroxide as a crosslinking agent.
- a peroxide as a crosslinking agent. Crosslinking the rubber composition with a peroxide reduces compression set.
- Examples of the peroxide include 1,1-di (t-butylperoxy) cyclohexane, 1,1-di (1-hexylperoxy) -3,3,5-trimethylcyclohexane, 1,1 -Di (t-hexylperoxy) cyclohexane, di (2-t-butylperoxyisopropyl) benzene and the like, among which 1,1-di (t_butylperoxy) cyclohexane and 1 , 1-Di (t-hexylpropoxy) _3,3,5-trimethylcyclohexane is particularly preferred.
- commercially available products such as Perhexa C_40, Perhexa TMH, and Perhexa 3M manufactured by NOF Corporation can be used.
- the content of the peroxide is preferably 0.5 to 1.5% by mass of the rubber composition.
- the content of peroxide compound is a rubber composition less than 0.5 mass 0/0, child sufficiently crosslink the rubber composition
- the compression set increases and exceeds 1.5% by mass, the hardness of the rubber composition becomes too high, and a conductive roller having a desired hardness may not be obtained.
- the first conductive roller of the present invention using the rubber composition preferably has an ASKER C hardness of 45 to 75 degrees, and preferably a compression set of 20 to 20%.
- the content of the peroxide is preferably 3.0 to 6.0% by mass of the rubber composition.
- the rubber composition cannot be sufficiently crosslinked, and the compression set increases, and the mass is increased by 6.0%. %, The hardness of the rubber composition becomes too high, so that a conductive roller having a desired hardness may not be obtained.
- the second conductive roller of the present invention using the above rubber composition preferably has a Asker C hardness of 45 to 75 degrees, and preferably a compression set of 20 to 20%.
- the content of the peroxide is preferably 0.5 to 2.0% by mass of the rubber composition.
- the rubber composition cannot be sufficiently crosslinked, and the compression set increases, and the rubber composition becomes 2.0% by mass. %, The hardness of the rubber composition becomes too high, so that a conductive roller having a desired hardness may not be obtained.
- the third conductive roller of the present invention using the above rubber composition uses a conical indenter, which preferably has an Asker C hardness of 45 to 75 °, and has a Fischer hardness under a load of 100 N. Tally calculated from the indentation depth D measured by the gauge and the deformation depth D after removing the load
- the ratio [(D-D) / D X 100%] is -30 to 0%.
- the Scar C hardness is less than 45 °, it may not be possible to secure sufficient hardness as a conductive roller. If the Scar C hardness exceeds 75 °, the photosensitive drum and toner may be damaged and the conductive roller may be damaged. In some cases, the durability of the sex roller may be reduced. If the creep of the conductive roller is less than 30%, the residual strain is too large. If the conductive roller is left for a long time or at high temperature in the pressed state (that is, in the state of being assembled in the toner cartridge), the conductive roller will This may cause horizontal streaks.
- the third conductive roller of the present invention is particularly preferable for conveying toner having a toner diameter of 3 to 13 ⁇ m.
- the horizontal streak is generated when the toner enters the blade pressing trace.
- the pressing mark is smaller than the toner diameter, it is possible to effectively prevent the occurrence of horizontal streaks. Since the third conductive roller of the present invention has a pressing trace force of 3 ⁇ 4 / im or less, it is suitable for transporting toner of 3 / im or more.
- the rubber composition may contain various compounding agents usually used in the rubber industry, for example, fillers. , Zinc white, stearic acid and the like can be appropriately selected and blended within a range that does not impair the object of the present invention. Commercially available products can be suitably used as these compounding agents.
- the above rubber composition contains (A) component: polybutazine rubber and Z or polyisoprene rubber, (B) component: liquid polyisoprene rubber, (C) component: conductive agent, and (D) component: peroxide. It can be manufactured by a known method by compounding the product and various compounding agents appropriately selected as necessary.
- the shaft of the conductive roller of the present invention is not particularly limited as long as it has good conductivity.
- a core made of a solid metal such as iron, stainless steel, and aluminum, or a hollow inside is used.
- a metal shaft such as a hollow metal cylinder can be used.
- the conductive roller of the present invention can be used as a developing roller and a toner supply roller of an image forming apparatus.
- the method for producing the conductive roller is not particularly limited.
- the rubber composition is injected into a mold having a desired shape in which a metal shaft is disposed at the center, and the rubber composition is crosslinked. Can be manufactured.
- Rubber compositions having the compounding formulations shown in Tables 1 and 2 were prepared, and the obtained rubber compositions were injected into a mold previously equipped with a core metal having an outer diameter of 6 mm, and were heated at 160 ° C for 30 minutes. By heating, the rubber composition was crosslinked to produce a rubber roller having an outer diameter of 16 mm and a length of 240 mm. Both ends of the obtained roller were cut by about 5 mm to produce a roller for evaluation having a total length of 230 mm. The obtained evaluation roller was left at room temperature for 14 days to check for bleed. The hardness, compression set and roller resistance of the evaluation roller were measured by the following methods. The results are shown in Tables 1 and 2. (1) Hardness
- test piece with a diameter of 29 mm and a height of 12.7 mm is placed in the height direction. After 0 / compression and standing in an oven at 70 ° C for 22 hours, the test piece was taken out of the oven, and the residual strain was determined 30 minutes after taking out.
- a load of 500 gf was applied to both ends of the roller, and the roller resistance was measured under the conditions of an applied voltage of 10 V, a room temperature of 25 ° C., and a humidity of 50% using a resistance measuring instrument R8340 (manufactured by Advantest Corporation).
- rollers of Comparative Examples 5 and 6 had low hardness for bleeding and low compression set, but the polybutadiene rubber and the softener were compatible and the carbon black was uniformly dispersed, so that the conductive path was poor. The roller resistance increased without being formed.
- a rubber composition having the compounding formulation shown in Table 3 was prepared, and the obtained rubber composition was injected into a mold in which a core metal having an outer diameter of 8 mm was previously mounted, and was heated at 155 ° C. for 30 minutes. The rubber composition was bridged by heating to produce a rubber developing roller having an outer diameter of 21 mm. With respect to the obtained developing roller, an Asker C hardness meter was measured by the above method, and further, creep and grindability were measured and evaluated by the following methods. Further, the developing roller was incorporated into a printer, and the presence or absence of occurrence of horizontal streaks was examined by the following method. Table 3 shows the results.
- the creep was calculated from
- the surface roughness (Rk) of the developing roller was measured using a shape measuring machine “Surfcom” (manufactured by Tokyo Seimitsu Co., Ltd.).
- the case where the surface roughness (Rk) was in the range of 6 to 10 ⁇ m was defined as good.
- the surface of the developing roller was evaluated by visually observing chatter marks and grinding marks on the surface of the developing roller.
- ⁇ indicates that there were no chatter marks and no cuts
- ⁇ Indicates that the trace of chatter is slightly present but does not affect the image
- X indicates that the trace of chatter is clearly visible and the image is bad.
- a predetermined amount of the unvulcanized rubber composition was injected into a mold previously equipped with a shaft, and the rubber composition was heated in an oven heated to 170 ° C. for 30 minutes to crosslink the rubber composition.
- the crosslinked roller was removed from the mold, cooled, and polished to a predetermined roller diameter using a polishing machine manufactured by Mizuguchi Seisakusho.
- the obtained conductive roller was left at room temperature for 14 days to check for bleed.
- the hardness, compression set and static roller resistance of the conductive roller were measured by the methods described above. Table 4 shows the results.
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- Chemical & Material Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Mechanical Engineering (AREA)
- Rolls And Other Rotary Bodies (AREA)
- Dry Development In Electrophotography (AREA)
- Cleaning In Electrography (AREA)
- Electrophotography Configuration And Component (AREA)
- Electrostatic Charge, Transfer And Separation In Electrography (AREA)
- Fixing For Electrophotography (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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JP2006512508A JP4516069B2 (ja) | 2004-04-19 | 2005-04-13 | 導電性ローラ |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
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JP2004-122633 | 2004-04-19 | ||
JP2004122633 | 2004-04-19 | ||
JP2004-137638 | 2004-05-06 | ||
JP2004137638 | 2004-05-06 |
Publications (1)
Publication Number | Publication Date |
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WO2005103834A1 true WO2005103834A1 (ja) | 2005-11-03 |
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Family Applications (1)
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PCT/JP2005/007155 WO2005103834A1 (ja) | 2004-04-19 | 2005-04-13 | 導電性ローラ |
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JP (1) | JP4516069B2 (ja) |
WO (1) | WO2005103834A1 (ja) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006267574A (ja) * | 2005-03-24 | 2006-10-05 | Bridgestone Corp | 導電性ローラ |
JP2006267568A (ja) * | 2005-03-24 | 2006-10-05 | Bridgestone Corp | 導電性ローラ |
JP2007131665A (ja) * | 2005-11-08 | 2007-05-31 | Bridgestone Corp | ゴム架橋物 |
JP2012058322A (ja) * | 2010-09-06 | 2012-03-22 | Canon Inc | 現像ローラ、その製造方法、プロセスカートリッジおよび画像形成装置 |
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JP2002357950A (ja) * | 2001-03-30 | 2002-12-13 | Bridgestone Corp | トナー担持体及びそれを用いた画像形成装置 |
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JP3185285B2 (ja) * | 1991-10-25 | 2001-07-09 | 株式会社ブリヂストン | 発泡導電性ロールの製造方法 |
JP3134464B2 (ja) * | 1992-02-10 | 2001-02-13 | 株式会社ブリヂストン | 導電性ロール |
JP3243853B2 (ja) * | 1992-06-12 | 2002-01-07 | 株式会社ブリヂストン | 導電性ロールの製造方法 |
JP3320001B2 (ja) * | 1997-11-20 | 2002-09-03 | 株式会社ブリヂストン | 導電ロールの製造方法 |
JP3070556B2 (ja) * | 1997-11-20 | 2000-07-31 | 株式会社ブリヂストン | 導電ロール |
JP3070557B2 (ja) * | 1997-11-20 | 2000-07-31 | 株式会社ブリヂストン | 導電ロール |
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2005
- 2005-04-13 JP JP2006512508A patent/JP4516069B2/ja not_active Expired - Fee Related
- 2005-04-13 WO PCT/JP2005/007155 patent/WO2005103834A1/ja active Application Filing
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JPH06175470A (ja) * | 1992-12-01 | 1994-06-24 | Bridgestone Corp | 導電性ロール |
JP2002357950A (ja) * | 2001-03-30 | 2002-12-13 | Bridgestone Corp | トナー担持体及びそれを用いた画像形成装置 |
JP2003221474A (ja) * | 2001-11-08 | 2003-08-05 | Canon Inc | 導電性部材 |
JP2003147311A (ja) * | 2001-11-12 | 2003-05-21 | Sekisui Chem Co Ltd | 光硬化性粘着シート |
JP2004070016A (ja) * | 2002-08-07 | 2004-03-04 | Canon Inc | トナー |
Cited By (5)
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JP2006267574A (ja) * | 2005-03-24 | 2006-10-05 | Bridgestone Corp | 導電性ローラ |
JP2006267568A (ja) * | 2005-03-24 | 2006-10-05 | Bridgestone Corp | 導電性ローラ |
JP4646662B2 (ja) * | 2005-03-24 | 2011-03-09 | 株式会社ブリヂストン | 導電性ローラ |
JP2007131665A (ja) * | 2005-11-08 | 2007-05-31 | Bridgestone Corp | ゴム架橋物 |
JP2012058322A (ja) * | 2010-09-06 | 2012-03-22 | Canon Inc | 現像ローラ、その製造方法、プロセスカートリッジおよび画像形成装置 |
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JP4516069B2 (ja) | 2010-08-04 |
JPWO2005103834A1 (ja) | 2008-03-13 |
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