WO2005064418A1 - 導電性ゴムローラおよびその製造方法 - Google Patents
導電性ゴムローラおよびその製造方法 Download PDFInfo
- Publication number
- WO2005064418A1 WO2005064418A1 PCT/JP2004/014928 JP2004014928W WO2005064418A1 WO 2005064418 A1 WO2005064418 A1 WO 2005064418A1 JP 2004014928 W JP2004014928 W JP 2004014928W WO 2005064418 A1 WO2005064418 A1 WO 2005064418A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- layer
- conductive rubber
- conductive
- rubber
- ion
- 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
- G03G15/14—Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base
- G03G15/16—Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base of a toner pattern, e.g. a powder pattern, e.g. magnetic transfer
- G03G15/1665—Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base of a toner pattern, e.g. a powder pattern, e.g. magnetic transfer by introducing the second base in the nip formed by the recording member and at least one transfer member, e.g. in combination with bias or heat
- G03G15/167—Apparatus for electrographic processes using a charge pattern for transferring a pattern to a second base of a toner pattern, e.g. a powder pattern, e.g. magnetic transfer by introducing the second base in the nip formed by the recording member and at least one transfer member, e.g. in combination with bias or heat at least one of the recording member or the transfer member being rotatable during the transfer
- G03G15/1685—Structure, details of the transfer member, e.g. chemical composition
-
- 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
- G03G15/02—Apparatus for electrographic processes using a charge pattern for laying down a uniform charge, e.g. for sensitising; Corona discharge devices
- G03G15/0208—Apparatus for electrographic processes using a charge pattern for laying down a uniform charge, e.g. for sensitising; Corona discharge devices by contact, friction or induction, e.g. liquid charging apparatus
- G03G15/0216—Apparatus for electrographic processes using a charge pattern for laying down a uniform charge, e.g. for sensitising; Corona discharge devices by contact, friction or induction, e.g. liquid charging apparatus by bringing a charging member into contact with the member to be charged, e.g. roller, brush chargers
- G03G15/0233—Structure, details of the charging member, e.g. chemical composition, surface properties
Definitions
- the present invention relates to a conductive rubber roller suitably used for an image forming apparatus such as an electrophotographic copying machine, a printer, and a facsimile, and having excellent charging and transfer stability, and a method for producing the same.
- an electronic conductive rubber provided with conductivity by containing carbon, a metal oxide, or the like, or Ion conductive rubber that has been made conductive by incorporating ionic substances is generally used! /
- the voltage dependence of the resistance value can be made smaller than that of the electronic conductive rubber.
- an ether bond, an ester bond, and the like are present in the ion conductive rubber, and the rubber as a whole is hydrophilic. Therefore, especially in a high-temperature and high-humidity environment, the resistance tends to increase due to water absorption.
- the dry ion of the rubber decreases the free ion concentration of the charge carrier, resulting in a decrease in ionic conductivity. Then, the resistance value increases. That is, in the ion conductive rubber, the environmental dependency of the resistance value tends to increase. If the resistance value increases in a low-temperature and low-humidity environment, problems such as a decrease in image density occur.
- Patent Document 1 discloses a method of sequentially laminating an ion conductive elastic layer and a surface layer in which an electronic conductive substance is dispersed on a conductive support, A charging roll whose surface layer is a coating film formed by electrostatic coating is disclosed.
- a charging roll whose surface layer is a coating film formed by electrostatic coating.
- Patent Document 2 discloses a conductive elastic layer mainly composed of a medium-resistance elastic material having an ion conduction mechanism, a conductive elastic layer which is in contact with the charged object and surface-treated on the elastic layer.
- a DC voltage of 50 V-1000 V is applied, the resistance value between the elastic layer and the coating layer when the measurement voltage is -50 V is measured as Rl.
- the resistance value between the conductive layer and the coating layer at a voltage of 1000 V is R2, and when Rl ⁇ R2, the rate of change A of the resistance value between the conductive layer and the coating layer is R2.
- the resistance R1 between the conductive layer and the coating layer at a measurement voltage of 50 V should satisfy R1 100, and R1 ⁇ 8 X 10 7 ⁇ .
- a charging member in which resistance of the elastic layer and the coating layer is adjusted is disclosed.
- the resistance value R1 between the elastic layer and the coating layer is, for example, 8 to 10 7 ⁇
- the resistance of the coating layer having a large resistance value between the elastic layer and the coating layer is large. If the thickness varies even slightly, the overall roller resistance will change significantly, resulting in poor production stability.
- Patent Document 1 JP-A-2000-352857
- Patent Document 2 Japanese Patent Application Laid-Open No. 2002-229300
- An object of the present invention is to solve the above-mentioned problems, and to provide a conductive rubber roller having excellent charging and transfer stability in which both the environmental dependence and the voltage dependence of a resistance value are extremely small, and a method for producing the same.
- a rubber layer including a base layer made of an ion-conductive rubber layer and a surface layer made of an electronic conductive polymer layer having a lower surface resistance than the ion-conductive rubber layer is provided on a support shaft.
- the conductive rubber roller is formed, and the surface resistance ( ⁇ ) of the ion conductive rubber layer
- the conductive rubber roller is characterized in that the ratio (A) / (B) to the surface resistance value (B) of the secondary conductive polymer layer is set within the range of (A) Z (B) ⁇ 100. .
- the thickness of the surface layer is preferably 5 ⁇ m to 40 ⁇ m! / ⁇ .
- the electron conductive polymer layer used in the present invention is preferably made of a fluororesin containing carbon or metal oxide.
- the present invention also provides a support shaft including a base layer composed of an ion-conductive rubber layer and a surface layer composed of an electron-conductive polymer layer having a lower surface resistance than the ion-conductive rubber layer.
- a method of manufacturing a conductive rubber roller having a rubber layer formed thereon comprising: forming a base layer made of an ion conductive rubber layer; and controlling the surface temperature and the Z or atmosphere temperature of the ion conductive rubber layer to 130 ° C.
- the ratio (A) / (B) of the surface resistance value (A) of the ionic conductive rubber layer to the surface resistance value (B) of the electron conductive polymer layer is 1 (A) Z ( B) A method for producing a conductive rubber roller, which is set within a range of ⁇ 100.
- a rubber layer having a base layer made of an ion-conductive rubber layer and a surface layer made of an electron-conductive polymer layer is formed.
- a conductive rubber roller having transfer stability can be provided.
- FIG. 1 is a sectional view showing a typical embodiment of the present invention.
- FIG. 2 is a view for explaining a method for measuring a surface resistance value of a rubber layer in the present invention. Explanation of symbols
- FIG. 1 is a cross-sectional view showing a typical embodiment of the present invention.
- the conductive rubber roller of the present invention includes a rubber layer including a base layer 11 made of an ionic conductive rubber layer and a surface layer 12 made of an electronic conductive polymer layer having a lower surface resistance value than the ionic conductive rubber layer. And the support shaft 13.
- the rubber layer may be formed of only the above-mentioned base layer and surface layer, or may have a configuration in which another layer is formed on the inner or outer circumference of the above-mentioned base layer. It can have a two-layer structure in which a conductive rubber layer and an electronic conductive polymer layer are formed on the outer periphery thereof. In this case, it is possible to obtain a conductive rubber roller that can be manufactured at low cost without going through complicated steps and that has excellent charging and transcription stability.
- ionic conductive polymers are excellent in that the voltage dependence of the resistance value is small! /, But since the polymer as a whole is hydrophilic, the environmental dependence of the resistance value tends to be large. You.
- electronic conductive polymers are excellent in that the environmental dependence of the resistance value is small, but it is difficult to uniformly disperse the conductive material in the polymer, and the voltage dependence of the resistance value tends to increase. is there. Therefore, when one of the polymers having conductivity is used alone for the conductive rubber roller, it is difficult to reduce both the voltage dependency and the environment dependency of the resistance value.
- ion conductive rubber is used for a base layer portion that is not exposed to the outside, and an electronic conductive polymer is used for a surface layer that is easily affected by the environment of the outside.
- the low environmental dependence and low voltage dependence of the resistance value can be achieved at the same time. Also, by making the surface resistance of the surface layer smaller than the surface resistance of the base layer, it is possible to impart good charging and transfer stability to the conductive rubber roller.
- the ratio (A) / (B) of the surface resistance value (A) of the ionic conductive rubber layer to the surface resistance value (B) of the electronically conductive polymer layer is one.
- (A) Z (B) ⁇ 100 is set.
- (A) Z (B) needs to be larger than 1 in order to provide an electron conductive polymer layer having a lower resistance than the ion conductive rubber layer.
- (A) Z (B) is 100 or less, it is possible to effectively prevent a decrease in charging and transfer stability.
- the surface resistance of the ionic conductive rubber layer and the electronic conductive polymer layer in the present invention can be measured, for example, by the following method. FIG.
- FIG. 2 is a diagram illustrating a method for measuring the surface resistance value of a rubber layer in the present invention.
- the insulator 22 is placed on the surface of the metal roller 21, and two metal plates 23 having a thickness of 0.5 mm and a width of 20 mm are placed at intervals of 100 mm on the insulator 22.
- a conductive rubber roller 24 having a rubber layer formed on the outer periphery of the support shaft is placed.
- apply a constant current and a constant voltage to the two metal plates measure the surface resistance after 5 seconds, and average the three measured values to obtain the surface resistance.
- the thickness of the surface layer is 5 ⁇ m to 40 ⁇ m! / ⁇ .
- the thickness of the surface layer is 5 m or more, the effect of reducing the environmental dependency of the resistance value by providing the electron conductive polymer layer can be obtained to a desired degree.
- the thickness is 40 m or less, the ion conductive rubber is used.
- the low voltage dependency of the resistance value of the layer is not impaired.
- the rubber component of the ion-conductive rubber used in the present invention includes ionic substances such as epichlorohydrin rubber, urethane rubber, nitrile butadiene rubber, acrylic rubber, chloroprene rubber, fluorine rubber, nitrile rubber, norbornene rubber, and the like.
- ionic substances such as epichlorohydrin rubber, urethane rubber, nitrile butadiene rubber, acrylic rubber, chloroprene rubber, fluorine rubber, nitrile rubber, norbornene rubber, and the like.
- rubber such as natural rubber (NR), butadiene rubber, isoprene rubber, styrene-butadiene rubber (SBR), ethylene propylene-copolymer rubber (EPDM), butyl rubber, silicon rubber, etc.
- NR natural rubber
- SBR isoprene rubber
- EPDM ethylene propylene-copolymer rubber
- butyl rubber silicon rubber, etc.
- the ionic conductive rubber contains a filler exhibiting ionic conductivity.
- a filler exhibiting ionic conductivity.
- inorganic salts such as lithium perchlorate, sodium perchlorate and calcium perchlorate, lauryl Trimethylammonium chloride, stearyltrimethylammonium chloride, octadecyltrimethylammonium chloride, hexadecyltrimethylammonium chloride, modified aliphatic dimethylethylammonium-pamethosulfate, tetraethylammonium perchlorate Quaternary ammonium salts such as tetrabutylammonium perchlorate, tetrabutylammonium borofluoride, tetrabutylammonium borohydride, tetrabutylammonium borohydride, etc. , And further perchlorates, alkyl sulfonates, phosphate esters Etc
- the polymer component of the electronic conductive polymer used in the present invention includes a ratio (A) of the surface resistance value (A) of the ionic conductive rubber layer to the surface resistance value (B) of the electronic conductive polymer layer.
- (B) is a polymer whose surface resistance value can be adjusted so that 1 ⁇ (A) Z (B) ⁇ 100, for example, fluorine resin, polyamide resin, acrylic resin. Fat, silicone resin, etc. can be used.
- These polymer components may be one kind or a mixture of two or more kinds.
- carbon, metal oxide, and the like can be used as the filler that imparts electronic conductivity.
- the ionic conductive rubber and the electron conductive polymer are appropriately compounded with other components generally used for the production of rubber products as described below.
- Examples of the vulcanizing agent include sulfur, organic compounds such as sulfur, tetraalkylthiuram disulfide, morpholine disulfide, and alkyl phenol disulfide; metal compounds such as magnesium oxide; p-quinone-oxime; There are oximes such as dibenzoyl quinone dioxime, peroxides such as dicumyl peroxide and benzoyl peroxide, sulfur chloride, selenium, tellurium, etc., which are inexpensive and easily available, and have a vulcanizing effect. Sulfur is preferred because it is sufficiently large and has excellent abrasion resistance on the rubber roller surface
- Examples of the vulcanization accelerator include thiazoles such as dibenzothiazolyl disulfide (DM), 2-mercaptobenzothiazole (D), and 2-mercaptobenzothiazole zinc salt (MZ); diisopropylsulfenamide (DIBS); Sulfenamides such as cyclohexylsulfenamide (CZ), thiuram such as tetramethylthiuram disulfide (TT), tetraethylthiuram-disulfide (TET), dipentamethylenethiuram-tetrasulfide (TRA) , Dithiocarbamate zinc salt (PZ), dimethyl dithiocarbamate zinc salt (EZ), and other dithioacid salts, and other guadins, thioperias, aldehyde ammoniums, xanthates, and the like.
- thiazoles such as dibenzothiazolyl disulfide (DM), 2-mer
- Thiazoles promote the reaction between the rubber component and the vulcanizing agent, shorten vulcanization time, lower the vulcanization temperature, reduce the amount of sulfur, and improve the breaking strength and abrasion resistance of rubber rollers.
- DM Especially preferred is DM.
- thiazoles In particular, CZ is preferred because sulfenamides are also preferred because scorch is slower and vulcanization rises faster.
- Examples of the vulcanization accelerating aid include metal oxides such as zinc white and fatty acids such as zinc stearate and oleic acid.
- antioxidants such as amines and phenols
- fillers such as carbon, silica, clay, cork, talc, calcium carbonate, dibasic phosphite (DLP), basic magnesium carbonate, and alumina
- DLP dibasic phosphite
- a softener, a reinforcing agent, and the like can be appropriately compounded.
- the rubber layer used in the present invention may be prepared as a solid rubber (hard rubber) or sponge rubber in an electrophotographic apparatus to which the conductive rubber roller of the present invention is applied. What is necessary is just to select appropriately according to the desired performance.
- the sponge rubber can be produced by adding a foaming agent and, if necessary, a foaming aid to the components of the rubber composition, and preferably vulcanizing and molding under closed conditions.
- a chemical foaming agent is suitably used, and is classified into an organic type and an inorganic type.
- Organic blowing agents include azodicarbonamides (ADCA), azobisisobuty-tolyl (AIBN), and azoi conjugates such as norium azodicarboxylate (BaZ AC); -Toroso compounds such as torsopentamethylenetetramine (DPT), benzenesulfol-hydrazide (BSH), 4,4-oxybis (benzenesulfol-hydrazide) (OBSH), toluenesulfol-l-hydrazide (TSH), hydrazodicarbonamide ( Hydrazine derivatives such as HDCA) can be used.
- the inorganic foaming agent sodium bicarbonate (baking soda), ammonium bicarbonate, ammonium carbonate, sodium hydrogen carbonate and the like can be used. These may be used alone or in combination of two or more.
- urea-based assistants and the like can be used in addition to organic acid-based assistants such as salicylic acid.
- organic acid-based assistants such as salicylic acid.
- a -troso compound such as N, N, 1-dinitrosopentamethylenetetramine (DPT) is particularly preferable.
- the conductive rubber roller of the present invention can be manufactured by the following method. That is, a rubber layer including a base layer made of an ion-conductive rubber layer and a surface layer made of an electron-conductive polymer layer having a lower surface resistance than the ion-conductive rubber layer is provided on a conductive support shaft. To form
- the base layer and the surface layer can be produced, for example, by the following method. That is, the components of the rubber composition are firstly masticated by a single machine, and then extruded into a cylindrical shape. For example, under a load of 4 kgfZcm 2 (3.926266 ⁇ 10 5 Pa), 150. After steam vulcanization with C for 50 minutes and inserting it into a stainless steel core, the rubber surface is polished to obtain a cylindrical base layer. Subsequently, the outer periphery of the base layer is coated with an electronic conductive polymer such as fluororesin by a method such as spraying or coating so as to have a predetermined dry thickness. To form a surface layer.
- an electronic conductive polymer such as fluororesin
- the conductive rubber roller of the present invention can be manufactured by the above method.
- the surface temperature and the Z or ambient temperature of the ion conductive rubber layer when applying the electron conductive polymer are set in the range of 130 to 150 ° C. .
- the electron conductive polymer layer is preferably formed on the base layer by applying a compound material for an electron conductive polymer layer onto the base layer in a heated state by a method such as spraying, and then shrinking the material with cooling. .
- the ambient temperature is set within the range of 130 to 150 ° C., the contraction force of the electronic conductive polymer layer can be controlled within a certain range, and particularly good electronic conductivity can be obtained.
- Epichlorohydrin rubber is a copolymer of ethylene oxide, aryl glycidyl ether, and epichlorohydrin
- NBR is low-tolyl NBR
- carbon is thermal black
- vulcanization accelerator is tetramethyltyraum disulfide. (TT) and dibenzothiazolyl disulfide (DM), and sulfur was used as a vulcanizing agent.
- the surface resistance of the base layer was measured by the method shown in FIG.
- An insulator 22 was placed on the surface of a metal roller 21, and two metal plates 23 having a thickness of 0.5 mm and a width of 20 mm were placed at intervals of 100 mm on the insulator 22.
- a roller having the above-described base layer is placed thereon as a conductive rubber roller 24 having a base layer formed on the outer periphery of the support shaft. At each end of the roller in the axial direction, 1.Okg in the direction of arrow A is added. 2.
- Apply a constant current and a constant voltage to the two metal plates 23, measure the surface resistance after 5 seconds, and average the measured values at three points to obtain the surface resistance.
- the surface resistance of the base layer was 1.1 ⁇ + 07 ⁇ .
- the outer periphery of the formed base layer was spray-coated with an electron conductive fluorine resin, and then dried under an atmosphere of 150 ° C for 1 hour to obtain a dried film having a thickness as shown in Tables 1 and 2.
- a layer was formed to obtain a conductive rubber roller. The both ends of the base layer were not spray painted.
- the surface resistance was measured by the same method as that of the roller on which the base layer was formed.
- the surface resistance value of the conductive rubber roller was 9.8 ⁇ + 05 ⁇ .
- the obtained conductive rubber roller is placed in each environment of LZL (temperature 10 ° C, humidity 15%), NZN (temperature 22 ° C, humidity 55%), H / H (temperature 28 ° C, humidity 85%). After leaving each for 24 hours, the resistance value of the whole rubber roller was measured.
- the resistance value was measured by the following method. That is, a rubber roller formed on a metal shaft is brought into contact with a rotating metal roll having a diameter of 30 mm at 2. Okg, and a constant current of 50 A is passed through the metal shaft formed with the rubber roller by a resistance meter (manufactured by Trek). The voltage after 5 seconds was read, and the resistance value was calculated.
- the environmental dependence index was calculated by the following. The results are shown in Table 1.
- the obtained conductive rubber roller was brought into contact with a rotating metal roll having a diameter of 30 mm with a load of 2. Okg, and a DC voltage of 100 V and 500 V was applied using a resistance meter (“R8340A” manufactured by Advantest Corporation). An average value was determined from the maximum value and the minimum value of the resistance value.
- each of the environmental dependency indices was 0.51 ogQ or less, and achieved a level satisfactory in practical use as the conductive rubber roller. .
- the environmental dependency index of the comparative example is in the range of 0.951 ogQ-0.971 ⁇ 8 ⁇ . I understand that.
- the voltage-dependent index was 0.21 ogQ or less, and a surface layer having an electron conductive polymer force was formed.
- the voltage dependence of the comparative examples there are no 0. 051og Q -0. 061 ⁇ 8 ⁇ a is the slightly higher compared to the significant increase is not observed, a level that can satisfy in practical use as a conductive rubber roller. Even if a surface layer having an electron conductive polymer force is formed, it is a component that the low voltage dependency of the base layer having an ion conductive rubber force is not impaired.
- the conductive rubber roller of the present invention exhibits excellent charging and transfer stability, in which the voltage dependence and the environment dependence of the resistance value are extremely low.
- a conductive rubber roller capable of obtaining a wide V in which both the voltage dependency and the environment dependency of the resistance value are extremely low, and which can obtain excellent charging and transfer stability in a use environment. Can be provided.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Electrostatic Charge, Transfer And Separation In Electrography (AREA)
- Rolls And Other Rotary Bodies (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003-430175 | 2003-12-25 | ||
JP2003430175A JP2005188615A (ja) | 2003-12-25 | 2003-12-25 | 導電性ゴムローラおよびその製造方法 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005064418A1 true WO2005064418A1 (ja) | 2005-07-14 |
Family
ID=34736327
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2004/014928 WO2005064418A1 (ja) | 2003-12-25 | 2004-10-08 | 導電性ゴムローラおよびその製造方法 |
Country Status (3)
Country | Link |
---|---|
JP (1) | JP2005188615A (ja) |
CN (1) | CN1867872A (ja) |
WO (1) | WO2005064418A1 (ja) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5009406B2 (ja) * | 2010-05-12 | 2012-08-22 | 住友ゴム工業株式会社 | 帯電ローラ |
CN102580905B (zh) * | 2012-02-15 | 2013-11-20 | 德州华源生态科技有限公司 | 并条、粗纱胶辊导电涂层的处理方法 |
JP6300413B2 (ja) * | 2014-11-17 | 2018-03-28 | 住友ゴム工業株式会社 | 現像ローラおよび画像形成装置 |
JP6642791B2 (ja) * | 2015-11-18 | 2020-02-12 | シンジーテック株式会社 | 定着部材 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH10282813A (ja) * | 1997-04-01 | 1998-10-23 | Fuji Xerox Co Ltd | 電圧印加ロールおよび画像形成装置 |
JP2001109231A (ja) * | 1999-10-01 | 2001-04-20 | Bridgestone Corp | 導電性部材及び画像形成装置 |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0749602A (ja) * | 1993-05-31 | 1995-02-21 | Ricoh Co Ltd | ローラ帯電装置 |
-
2003
- 2003-12-25 JP JP2003430175A patent/JP2005188615A/ja active Pending
-
2004
- 2004-10-08 WO PCT/JP2004/014928 patent/WO2005064418A1/ja active Application Filing
- 2004-10-08 CN CNA2004800305983A patent/CN1867872A/zh active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH10282813A (ja) * | 1997-04-01 | 1998-10-23 | Fuji Xerox Co Ltd | 電圧印加ロールおよび画像形成装置 |
JP2001109231A (ja) * | 1999-10-01 | 2001-04-20 | Bridgestone Corp | 導電性部材及び画像形成装置 |
Also Published As
Publication number | Publication date |
---|---|
JP2005188615A (ja) | 2005-07-14 |
CN1867872A (zh) | 2006-11-22 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP2008152202A (ja) | 導電性ゴムローラおよびその製造方法 | |
CN107663315B (zh) | 导电性橡胶组合物、转印辊及其制造方法以及成像装置 | |
JP5759325B2 (ja) | 導電性ローラ用ゴム組成物およびその製造方法ならびに導電性ローラ | |
JP2007138034A (ja) | 電子写真装置用導電性弾性体部材 | |
WO2005064418A1 (ja) | 導電性ゴムローラおよびその製造方法 | |
JP2009151160A (ja) | 電子写真用帯電部材 | |
JP5632594B2 (ja) | 転写ローラ | |
JP2004191961A (ja) | 導電性ロール | |
US10209642B2 (en) | Charge roller | |
JP4107130B2 (ja) | 現像ロールおよびその製法 | |
JP2011022286A (ja) | 導電性ローラ | |
JP4409649B2 (ja) | 導電性弾性ローラ | |
JP4340082B2 (ja) | 導電性ゴムローラ | |
JP2004175945A (ja) | 導電性ポリマー組成物 | |
JP6006756B2 (ja) | 導電性ゴムローラ用組成物および導電性ゴムローラ | |
JP4070011B2 (ja) | 画像形成装置用発泡導電性ゴムローラの製造方法及び転写ローラ | |
WO2011074610A1 (ja) | 導電性ローラおよびその製造方法 | |
JP3668555B2 (ja) | 導電性ゴム組成物 | |
JP3315638B2 (ja) | 導電性発泡ゴムローラの製造方法 | |
JP2001175098A (ja) | 電子写真画像形成装置に用いられるゴムローラー | |
JP4140714B2 (ja) | 導電性発泡ロールおよび該導電性発泡ロールを用いた画像形成装置 | |
JP2006106323A (ja) | 現像ローラ | |
JP2003270885A (ja) | 導電性ロール | |
JP2009086645A (ja) | 電子写真機器の帯電ロール用ゴム組成物及び帯電ロール | |
JP2002168234A (ja) | 半導電性ゴムローラ |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 200480030598.3 Country of ref document: CN |
|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BW BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NA NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): BW GH GM KE LS MW MZ NA SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LU MC NL PL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
NENP | Non-entry into the national phase |
Ref country code: DE |
|
WWW | Wipo information: withdrawn in national office |
Ref document number: DE |
|
122 | Ep: pct application non-entry in european phase |