| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 492016000 | ROTATABLE RELATIVE TO SUPPORTING SHAFT | 58 |
| 20100120592 | MACHINE ROLLER - A machine roller includes a core shaft having an inner hollow space and two opposite open ends communicating with the inner hollow space; and two support axles separately connected to the two open ends of the core shaft. The two support axles are connected to the core shaft by radio-frequency heating the core shaft and then extending the support axles into the inner hollow space via the two open ends. Therefore, the machine roller can reduce weight and be easily manufactured to enable decreased manufacturing cost thereof. | 05-13-2010 |
| 20130260974 | ROTATING BODY AND BEARING - A rotating body includes a cylindrical rotating member and bearings located at the ends located in the axial direction of the rotating member. In the rotating body, at least one of the bearings includes a metal inner ring portion having a bearing hole and a resin outer ring portion having first and second portions. The first portion is fitted into the rotating member. The second portion protrudes in the axial direction from the rotating member, surrounds the outer peripheral surface of the inner ring portion, has an outer diameter larger than that of the rotating member, and is in contact with an opposing object opposing the rotating member so as to maintain a specified size of a gap by which the rotating member and the opposing object are spaced apart from each other. The outer and inner ring portions are integrally molded. | 10-03-2013 |
| 20130337986 | LIGHTWEIGHT CONVEYOR ROLLER - A roller made lighter through the use of lightening elements. The inventive roller, with its lightening element(s), is lighter yet maintains its overall dimensions, is strong and durable enough to withstand the rigors of the transportation industry and/or is cost effective to produce and maintain. The lightweight roller may be part of a system having at least one operable roller unit, each roller unit having a roller, cylindrical in shape having a length and a diameter, and a center aperture extending through the length of the roller, an axel/shaft having a diameter sized to rotatably fit within the central aperture of the roller, the shaft further having a retention mechanism located upon the shaft ends and an elongate “U” shaped roller rack, the roller rack sized to extend the length of the roller and having a pair of upwardly extending arms located adjacent the ends of the roller, each arm end having an aperture sized to receive the respective shaft end and locate the shaft with the roller in a fixed location. The roller system has at least one roller, preferably more or all of the rollers, having internal and/or external lightening elements. | 12-19-2013 |
| 20150038308 | Adjustable Roller Frame - An adjustable roller frame may include a frame, a pair of extension arms that are slidable within a channel in the frame, and a pair of cam assemblies that are used to selectively prevent and permit the extension arms to slide. | 02-05-2015 |
| 20150045195 | DEVICE FOR STRIP GUIDANCE IN A HOT MEDIUM (II) - The invention relates to a device for strip guidance in a hot medium, comprising a deflection roller ( | 02-12-2015 |
| 20160138647 | ROLLER STRUCTURE AND MANUFACTURING METHOD THEREOF - A roller structure and a manufacturing method thereof are introduced. The roller structure includes a roller rotatable about an axial portion; a bush with an end disposed to an end of the axial portion and has a first stop portion positioned proximate to one side of the roller and another end having an engaging portion coupled to a load; and a second stop portion disposed to the other end of the axial portion and positioned proximate to the other side of the roller such that the roller rotates between the first stop portion and the second stop portion. Hence, the roller structure and the manufacturing method thereof provide a modularized roller structure for carrying a load, effectuate modularized assembly and production, enhance assembly efficiency, attain structural streamlining, and cut costs. | 05-19-2016 |
| 492017000 | Coating treatment or applicator | 48 |
| 492018000 | Printing or copying | 47 |
| 20100144505 | ROLLER USABLE WITH IMAGE FORMING APPARATUS AND METHOD OF MANUFACTURING THE SAME - A roller usable with an image forming apparatus includes a shaft, a body formed on an outer surface of the shaft, and a tube disposed on an outer surface of the body. The tube is formed so that opposite side end portions of the tube contact opposite side surfaces of the body. The opposite side end portions of the tube are heated and pressurized so as to be secured on the opposite side surfaces of the body. | 06-10-2010 |
| 20100222193 | CONDUCTIVE RUBBER MEMBER - To provide a conductive rubber member which exhibits small variation in electrical resistance and a stable electrical resistance for a long period of time. The conductive rubber member include a conductive elastic layer formed of a rubber material which has been imparted with electrical conductivity, wherein the conductive elastic layer has a surface-treatment layer which has been produced through impregnating a surface portion of the conductive elastic layer with a surface-treating liquid containing an isocyanate compound and carbon black which has undergone dispersion treatment. | 09-02-2010 |
| 20100267537 | CHARGING ROLL AND METHOD OF PRODUCING THE SAME - A charging roll is provided which does not cause image defects even when being used for a long period of time and does not allow a surface layer to be separated when an electrophotographic machine is operated after the charging roll installed therein is left under high temperature and humidity conditions. A charging roll includes a shaft, an electrically conductive rubber foam layer formed on an outer circumferential surface of the shaft, and a surface layer formed radially outwardly of the electrically conductive rubber foam layer. The electrically conductive rubber foam layer includes a skin layer having an opening area ratio of from 0.5 to 20% at a superficial layer of the electrically conductive rubber foam layer, and the surface layer is formed of a synthetic resin composition mainly composed of a synthetic resin material having a glass transition temperature of from 0 to 45° C. | 10-21-2010 |
| 20110177926 | CHARGE-CONTROLLED POLYURETHANE FOAM AND TONER-CONVEYING ROLLER USING THE SAME - Provided are charge-controlled polyurethane foam by which the influence of electrification by friction between toner on the surface layer of a toner-conveying roller and a developing roller can be sufficiently prevented and by which a good image can be stably obtained with a low cost, and a toner-conveying roller using the same. | 07-21-2011 |
| 20110201485 | BIAS CHARGE ROLLER COMPRISING OVERCOAT LAYER - Disclosed are overcoat layers comprising an acrylic resin crosslinked with a glycoluril resin. The overcoat layers are useful in bias charge rollers because they reduce streaking and increase service lifetime. | 08-18-2011 |
| 20110281703 | SEMICONDUCTIVE ROLLER, CHARGING ROLLER AND ELECTROPHOTOGRAPHIC APPARATUS - The semiconductive roller according to the present invention includes: a roller body having an outer peripheral surface made of a semiconductive rubber composition; and an oxide film covering the outer peripheral surface of the roller body, while the semiconductive rubber composition contains a base polymer and a crosslinking component for crosslinking the base polymer, the base polymer is a mixture of a bicopolymer E containing epichlorohydrin and nitrile-butadiene rubber N, the mass ratio E/N of the bicopolymer E and the nitrile-butadiene rubber N in the mixture is 50/50 to 80/20, and the crosslinking component includes a thiourea-based crosslinking component for crosslinking the bicopolymer E and a sulfur-based vulcanizing component for vulcanizing the nitrile-butadiene rubber N. | 11-17-2011 |
| 20110319240 | ROLL MEMBER, CHARGING DEVICE, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS - A roll member includes: a core; and an elastic layer that is formed on the core and constituted with a vulcanized substance of a rubber composition containing a polysulfide polymer (A) and an elastic material (B); wherein the polysulfide polymer (A) includes at least one structural unit selected from —(C | 12-29-2011 |
| 20120129666 | ELECTRIFYING ROLLER - Provided is an electrifying roller which is manufactured more easily, and has a good electrical conduction property with a small amount of electrically conductive material. | 05-24-2012 |
| 20120129667 | TRANSFER MEMBER - The transfer member according to the present invention is a transfer member employed for transferring toner in an image forming apparatus utilizing electrophotography, made of a rubber composition at least containing styrene-butadiene rubber, ethylene-propylene-diene rubber and epichlorohydrin rubber as rubber components. | 05-24-2012 |
| 20120202663 | SEMICONDUCTIVE ROLLER - The semiconductive roller according to the present invention includes a nonporous roller body made of a rubber composition containing styrene-butadiene rubber and epichlorohydrin rubber as rubber components. | 08-09-2012 |
| 20130029818 | SLEEVED ROLLER FOR USE IN AN ELECTROSTATOGRAPHIC MACHINE - The present invention is a sleeved roller for use in an electrostatographic machine. The roller includes a cylindrical rigid core member having an outer ceramer surface. A removable sleeve member includes a substrate comprising a polymeric material support layer, wherein the sleeve member surrounds and intimately contacts the outer ceramer surface. The invention provides a low cost sleeved roller, while providing a high friction interference fit to reduce slipping of the sleeve member during operation and thereby providing improved registration performance. | 01-31-2013 |
| 20130029819 | DOUBLE SLEEVED ROLLER FOR USE IN AN ELECTROSTATOGRAPHIC MACHINE - The present invention is a double-sleeved roller for use in an electrostatographic machine. The roller includes a cylindrical rigid core member, a removable inner sleeve member that surrounds and intimately contacts the rigid core member; and a removable outer sleeve member including a substrate comprising a polymeric material support layer. The inner sleeve member comprises a ceramer outer surface, and the outer sleeve member surrounds and intimately contacts the outer ceramer surface of the inner sleeve member and is removable. The outer sleeve may include a polyethylene terephthalate inner surface that contacts the outer ceramer surface of the inner sleeve member. The inner sleeve can comprise a rigid substrate such as nickel having an outer ceramer surface. Use of an outer sleeve comprising a substrate comprising a polymeric material support layer enables low cost, while the outer ceramer surface of the inner sleeve provides a high friction interference fit to reduce slipping of the outer sleeve member during operation. | 01-31-2013 |
| 20130196836 | CONDUCTIVE ROLLER, IMAGE-FORMING APPARATUS, AND PROCESS CARTRIDGE - A conductive roller includes a conductive support, a conductive elastic layer disposed on the conductive support, and a conductive resin layer disposed on the conductive elastic layer and containing a resin and a conductor. The conductive resin layer includes a first region forming an outermost surface thereof and a second region between the first region and the conductive elastic layer. The second region adjoins the conductive elastic layer and has a lower surface resistivity than the first region. | 08-01-2013 |
| 20130281275 | ELECTRICALLY CONDUCTING MEMBER FOR ELECTROPHOTOGRAPHY, PROCESS CARTRIDGE AND ELECTROPHOTOGRAPHIC IMAGE FORMING APPARATUS - To provide an electrically conducting member for electrophotography that has made itself kept from increasing in electrical resistance with time even in a low temperature and low humidity environment and also has made any ion conducting agent kept from bleeding to its surface. To also provide a process cartridge, and an electrophotographic image forming apparatus, that can stably form high-grade electrophotographic images over a long period of time in a variety of environments. The conductive member for electrophotography has an electrically conducting substrate and an electrically conducting layer, and the electrically conducting layer contains a resin having in the molecule at least one structure selected from structures represented by the formula (1), formula (2) and formula (3) each defined in the specification. The process cartridge and the electrophotographic image forming apparatus each make use of the same. | 10-24-2013 |
| 20130281276 | ELECTRICALLY CONDUCTIVE MEMBER, PROCESS CARTRIDGE AND ELECTROPHOTOGRAPHIC APPARATUS - An electrically conductive member for electrophotography is provided which has an electrically conductive mandrel and an electrically conductive layer on the peripheral surface of the mandrel; the electrically conductive layer containing a binder resin having as an ion exchange group a sulfo group or a quaternary ammonium salt group in the molecule and an ion with a polarity opposite to that of the ion exchange group; the binder resin further having any structure selected from the group consisting of structures represented by formulas (1)-1 to (1)-3, and any structure selected from the group consisting of structures represented by formulas (2)-1 and (2)-2, and having a molecular structure that prevents any matrix-domain structure from being formed in the electrically conductive layer. | 10-24-2013 |
| 20130288869 | ELECTRICALLY CONDUCTIVE ROLLER - An electrically conductive roller is provided which has a stable roller resistance with little batch-to-batch variation in roller resistance and substantially without influence of environmental conditions and the like, and is unlikely to contaminate the photo receptor. The electrically conductive roller ( | 10-31-2013 |
| 20130310239 | CHARGING MEMBER, PROCESS CARTRIDGE AND ELECTROPHOTOGRAPHIC APPARATUS - The present invention provides a charging member having an elastic layer on a surface thereof in which occurrence of compression set is reduced. The charging member includes an electro-conductive support and an elastic layer provided on the support as a surface layer, wherein the elastic layer is a rubber layer made of a crosslinked product of a rubber mixture including acrylonitrile butadiene rubber and polybutadiene, the polybutadiene includes 1,2-syndiotactic polybutadiene, and the elastic layer is formed by irradiating a surface of the rubber layer with electron rays. | 11-21-2013 |
| 20140080691 | CHARGING MEMBER, PROCESS CARTRIDGE AND ELECTROPHOTOGRAPHIC APPARATUS - The present invention provides a charging member that suppresses abnormal discharge which induces charging unevenness, and that has little contamination on a surface layer, to thereby enable uniform charging over a long period. The charging member includes a substrate, an elastic layer and a surface layer, wherein the surface layer contains a polymer compound having constitutional units represented by the following general formula (1), chemical formula (2) and general formula (3), and having a Si—O—Ti bond, a Ti—O-M bond and a Si—O-M bond. M is any atom selected from the group consisting of V, Nb and W. | 03-20-2014 |
| 20140113782 | SEMICONDUCTIVE ROLLER, METHOD FOR MANUFACTURING THE SAME, AND IMAGE FORMING APPARATUS - A semiconductive roller includes a conductive support and a semiconductive elastic layer disposed on a circumferential surface of the conductive support, the semiconductive elastic layer containing at least an epichlorohydrin rubber and a conducting agent and having a foam structure, wherein, when the semiconductive roller is left to stand in water for 30 minutes, the chlorine ion content derived from the semiconductive elastic layer per unit area of the semiconductive elastic layer is approximately not more than 0.06 μmol/cm | 04-24-2014 |
| 20140113783 | SEMICONDUCTIVE ROLLER - A semiconductive roller is provided which includes a roller body formed from a highly extrudable rubber composition containing an SBR and an epichlorohydrin rubber in combination as a rubber component, the roller body having a higher production yield and higher toner imaging durability, and unlikely to suffer from reduction in image density due to adhesion of toner and a contact mark on an outer peripheral surface thereof with a smaller compression set. In the rubber component, the SBR and the epichlorohydrin rubber are present in an SBR excess state. In the rubber composition, a crosslinking component for crosslinking the rubber component includes a sulfur crosslinking agent and 0.75 to 3 parts by mass of a thiazole accelerating agent based on 100 parts by mass of the rubber component. The roller body (2) of the semiconductive roller (1) is made of a crosslinking product of the rubber composition. | 04-24-2014 |
| 20140128233 | CHARGING MEMBER, MANUFACTURING METHOD THEREFOR, A PROCESS CARTRIDGE, AND ELECTROPHOTOGRAPHIC APPARATUS - To provide a charging member which suppresses the generation of density nonuniformity in an electrophotographic image caused by charge nonuniformity due to adhesion of charged substances, such as toner particles. There is provided a charging member which has a surface layer, the surface layer includes conductive zinc oxide whiskers each formed of a nuclear portion and four needle crystal portions extending radially outward therefrom, and the needle crystal portions are exposed to form convex portions of a surface of the surface layer. | 05-08-2014 |
| 20140162861 | RUBBER FOAM TUBE PRODUCTION METHOD, ELECTRICALLY CONDUCTIVE ROLLER, AND IMAGE FORMING APPARATUS - A rubber foam tube ( | 06-12-2014 |
| 20140221183 | CHARGING MEMBER, PROCESS CARTRIDGE, AND ELECTROPHOTOGRAPHIC IMAGE FORMING APPARATUS - In order to maintain the image quality of a recent high-speed electrophotographic apparatus, a charging member is provided which hardly causes charging unevenness of a photosensitive member even when vibration of the photosensitive member occurs. The charging member includes an electro-conductive support, an electro-conductive elastic layer, and a surface layer. The elastic layer contains a resin having an epichlorohydrin chain in the molecular structure and a specific flavonoid compound having two or more hydroxyl groups in the molecular structure. | 08-07-2014 |
| 20140221184 | ELECTROPHOTOGRAPHIC MEMBER, PROCESS CARTRIDGE AND ELECTROPHOTOGRAPHIC APPARATUS - An electrophotographic member having a high conductivity and having high adhesiveness to other layer, and a process cartridge and an electrophotographic apparatus using the electrophotographic member as a developer carrying member are provided. | 08-07-2014 |
| 20140249005 | Stabilizing Polymers to Control Passive Leaking of Functional Materials From Delivery Members - A delivery member for use in an image forming apparatus. The delivery member has a support member and a first layer disposed on the support member. The first layer includes a cross-linked elastomeric matrix, a stabilizing polymer comprising a polysiloxane backbone, and a functional material. Coating mixtures for preparing such delivery members having a first layer. Image forming apparatuses containing such delivery members. | 09-04-2014 |
| 20140274628 | CHARGING MEMBER, PROCESS CARTRIDGE, AND ELECTROPHOTOGRAPHIC IMAGE FORMING APPARATUS - A charging member is provided, suppressing the occurrence of streak-like images resulting from resistance increase caused by degradation of the charging member due to electric conduction for a long period. A process cartridge and an electrophotographic apparatus are also provided, suppressing the occurrence of streak-like images and stably forming a high-quality electrophotographic image. | 09-18-2014 |
| 20140287899 | ELECTROPHOTOGRAPHIC MEMBER, PROCESS CARTRIDGE AND ELECTROPHOTOGRAPHIC APPARATUS - An electrophotographic member is provided in which conductivity barely reduces and sufficient conductivity is obtained even under a low temperature and low humidity environment, a reduction in resistance beyond necessity is readily suppressed even under a high temperature and high humidity environment, and the bleeding of the quaternary ammonium salt can be suppressed. There is provided an electrophotographic member including an electroconductive mandrel and an electroconductive layer, wherein the electroconductive layer includes a resin having at least one of a structure represented by the following formula (1) and a structure represented by the following formula (2) in the molecule, and an anion: | 09-25-2014 |
| 20140342892 | SEMICONDUCTIVE ROLLER - A semiconductive roller having good semiconductivity as a charging roller or a developing roller is described. The semiconductive roller includes an oxide film having excellent characteristics as a protective film, and in particular, hardly causes an image defect of white stripes associated with tackiness in an image formed in a storage test in an environment of high temperature and high humidity. The semiconductive roller includes a semiconductive rubber composition formed by mixing a base polymer with a triazine crosslinker and a sulfur-based crosslinking component as a crosslinking component for crosslinking the base polymer, wherein the base polymer is a mixture of an epichlorohydrin rubber E and a diene rubber D having a mass ratio of E/D of 50/50 to 80/20. The semiconductive roller also has an oxide film formed on its outer peripheral surface by ultraviolet irradiation. | 11-20-2014 |
| 20150018181 | CHARGE ROLLER - The present disclosure discloses a new charge roller particularly but not exclusively for charging a photoconductive element in a liquid electro-photograph (LEP) image-forming apparatus. The charge roller includes a cured composition of an aromatic diisocyanate, a polycarbonate polyester polyol, a matte agent, a surface energy modifier, and a conductive agent. | 01-15-2015 |
| 20150018182 | CHARGE ROLLER - The present disclosure discloses a charge roller ( | 01-15-2015 |
| 20150087488 | SEMICONDUCTIVE ROLLER OF AN IMAGE-FORMING APPARATUS - A semiconductive roller to stably generate high-quality images for a long period of time by efficiently inhibiting migration of free epichlorohydrin (ECH) component to a surface of the semiconductive roller includes an elastic layer formed of a semiconductive rubber composition including about 50 to about 70 parts by weight of a base rubber and about 30 to about 50 parts by weight of a hydrin rubber. An extracted amount of the ECH component from the elastic layer is about 2% by volume or less, wherein the extracted amount is determined based on a reduced amount of chlorine (Cl) intensity measured using X-ray fluorescence (XRF) analysis performed before and after extraction of the ECH component from the elastic layer using tetrahydrofuran (THF). | 03-26-2015 |
| 20150087489 | CHARGING MEMBER, METHOD OF PRODUCING THE SAME, PROCESS CARTRIDGE, AND ELECTROPHOTOGRAPHIC APPARATUS - The present invention directs to provide a charging member having a protrusion to which smear is difficult to adhere even in a long-term used, and as a result being capable of exhibiting stable charging performance. The charging member has an electro-conductive substrate and an electro-conductive surface layer, wherein the surface layer includes a binder resin and a resin particle including a plurality of electro-conductive domains inside thereof, the surface layer has a protrusion derived from the resin particle, and the electro-conductive domains are localized in the vicinity of the surface of the resin particle. | 03-26-2015 |
| 20150316869 | SEMICONDUCTIVE ROLLER AND PRODUCTION METHOD THEREFOR - A semiconductive roller ( | 11-05-2015 |
| 20150331339 | ELECTROPHOTOGRAPHIC MEMBER, PROCESS CARTRIDGE AND ELECTROPHOTOGRAPHIC APPARATUS - The present invention provides an electrophotographic member in which an increase in resistance is small even in use at low temperature and which contributes to the formation of a high quality electrophotographic image, and a process cartridge and an electrophotographic apparatus using this electrophotographic member as a charging member or a developer carrying member. Therefore, the electrophotographic member of the present invention is an electrophotographic member including an electro-conductive mandrel and an electro-conductive layer, wherein the electro-conductive layer includes a urethane resin and an ion-conductive agent, the urethane resin has, between two adjacent urethane bonds, a structure represented by formula (1) and at least one structure selected from the group consisting of a structure represented by formula (2) and a structure represented by formula (3), and the ion-conductive agent contains a particular anion. | 11-19-2015 |
| 20150331340 | ELECTROPHOTOGRAPHIC MEMBER, PROCESS CARTRIDGE AND ELECTROPHOTOGRAPHIC IMAGE FORMING APPARATUS - The present invention provides an electrophotographic electro-conductive member containing an ion-exchange group structure in an electro-conductive layer, whereby the bleeding of an ionic conductive agent to the surface of the electro-conductive layer is suppressed and reduction in electro-conductivity caused by electrification is low. For this purpose, the electrophotographic member of the present invention is an electrophotographic member having an electro-conductive mandrel and an electro-conductive layer, wherein the electro-conductive layer contains a resin having any one or more of partial structures represented by the specific formulas (1) to (7) in the molecule, and an anion. | 11-19-2015 |
| 20150331341 | ELECTROPHOTOGRAPHIC MEMBER, PROCESS CARTRIDGE, AND ELECTROPHOTOGRAPHIC APPARATUS - The present invention provides a highly electro-conductive electrophotographic member which contributes to formation of high-quality electrophotographic images while bleeding out of an ion conducting agent is reduced, a process cartridge, and an electrophotographic apparatus. Accordingly, the electrophotographic member according to the present invention includes an electro-conductive mandrel and an electro-conductive layer, wherein the electro-conductive layer contains a resin synthesized from a nitrogen-containing aromatic heterocyclic cation and a compound being able to react with the nitrogen-containing aromatic heterocyclic cation, and an anion; the nitrogen-containing aromatic heterocyclic cation has two substituents bonded to hydroxyl groups; and the substituent bonded to the hydroxyl group is bonded to a nitrogen atom of a nitrogen-containing aromatic heterocycle of the nitrogen-containing aromatic heterocyclic cation. | 11-19-2015 |
| 20150331342 | ELECTROPHOTOGRAPHIC MEMBER, PROCESS CARTRIDGE AND ELECTROPHOTOGRAPHIC APPARATUS - The present invention provides an electrophotographic member having excellent deformation recovery even when stored or used under a high temperature and high humidity environment, which is useful in forming a high-quality electrophotographic image; a process cartridge; and an electrophotographic apparatus. The electrophotographic member of the present invention includes a conductive mandrel and an electro-conductive layer; the electro-conductive layer including a resin synthesized from an ion conducting agent and a compound being able to react with the ion conducting agent; the ion conducting agent including a specific anion and a cation having at least three hydroxyl groups; the compound being able to react with the hydroxyl group. | 11-19-2015 |
| 20150331343 | ELECTROPHOTOGRAPHIC MEMBER, PROCESS CARTRIDGE, AND ELECTROPHOTOGRAPHIC APPARATUS - Provided is an electrophotographic member conducive to the formation of a high-quality electrophotographic image, the member showing a small increase in resistance even after long-term electrification under a high-temperature and high-humidity environment, and a process cartridge and an electrophotographic apparatus each including the electrophotographic member as a charging member and/or a developer carrying member. Specifically, provided is an electrophotographic member including a substrate and an electro-conductive layer, in which the electro-conductive layer contains a resin having a structure unit represented by the following structural formula (1) and a specific anion: | 11-19-2015 |
| 20150331346 | ELECTROPHOTOGRAPHIC MEMBER, PROCESS CARTRIDGE, AND ELECTROPHOTOGRAPHIC APPARATUS - Provided is an electrophotographic electroconductive member in which an excessive decrease in resistance of an electroconductive roller in a high-temperature/humidity environment is suppressed and an electric resistance value in a low-temperature/humidity environment is reduced, and thus the electric resistance value is optimized without depending on use conditions and a usage environment. Also provided are a process cartridge and an electrophotographic apparatus that contribute to the stable formation of an electrophotographic image of high quality over a long period of time. The electrophotographic electroconductive member includes an electroconductive mandrel and an electroconductive resin layer formed on an outer periphery of the electroconductive mandrel. The electroconductive resin layer contains a cation and at least one kind of a bis(oxalato)borate anion or a tris(oxalato)phosphate anion. | 11-19-2015 |
| 20150331347 | ELECTROPHOTOGRAPHIC MEMBER, PROCESS CARTRIDGE, AND ELECTROPHOTOGRAPHIC APPARATUS - Provided is an electrophotographic member that has a high excessive charging-suppressing effect under a low-temperature and low-humidity environment, and has high charge-providing performance under a high-temperature and high-humidity environment, and a process cartridge and an electrophotographic apparatus each including the electrophotographic member. The electrophotographic member is an electrophotographic member including an electro-conductive substrate and an electro-conductive resin layer, the electro-conductive resin layer contains a cation and at least one anion selected from the group consisting of anions represented by the following formulae (1) to (5): | 11-19-2015 |
| 20150331348 | CHARGING MEMBER, PROCESS CARTRIDGE, AND ELECTROPHOTOGRAPHIC IMAGE FORMING APPARATUS - Provided is a charging member that suppresses the occurrence of abnormal discharge under low temperature and low humidity. The charging member includes a support and a surface layer on the support, and the surface layer contains a compound represented by the following formula (a), (b), (c), or (d). | 11-19-2015 |
| 20150362854 | SEMICONDUCTIVE ROLLER - An inventive semiconductive roller includes a tubular semiconductive rubber layer ( | 12-17-2015 |
| 20160070182 | ELECTRO-CONDUCTIVE MEMBER, PROCESS CARTRIDGE, ELECTROPHOTOGRAPHIC APPARATUS, AND ADDITION-CURABLE SILICONE RUBBER MIXTURE - There is provided an electro-conductive member for electrophotography. The electro-conductive member for electrophotography includes, in sequence, an electro-conductive base, an electro-conductive elastic layer, and a resin layer. The elastic layer contains a cured product of an addition-curable silicone rubber mixture having a specific composition. The addition-curable silicone rubber mixture contains an organopolysiloxane that contains an alkenyl group attached to a silicon atom in its molecule, an organopolysiloxane that contains a hydrogen atom attached to a silicon atom in its molecule, carbon black, and spherical solid inorganic particles. | 03-10-2016 |
| 20160116857 | CHARGING MEMBER, PROCESS CARTRIDGE, AND ELECTROPHOTOGRAPHIC APPARATUS - A charging member is provided having an electroconductive substrate, and a resin layer on the substrate, in which the charging member has an area on the surface of the charging member, the area including a compound represented by the following formula (1), | 04-28-2016 |
| 20160154323 | ELECTROCONDUCTIVE MEMBER FOR ELECTROPHOTOGRAPHY, PROCESS CARTRIDGE, AND ELECTROPHOTOGRAPHIC IMAGE-FORMING APPARATUS | 06-02-2016 |
| 20160161876 | MEMBER FOR ELECTROPHOTOGRAPHY AND METHOD FOR PRODUCING THE SAME - A member for electrophotography includes a base, an elastic layer on the base, the elastic layer comprising a silicone rubber, and a resin layer on the elastic layer and containing a resin. The resin in the resin layer and a silicon atom in the silicone rubber contained in the elastic layer bond to each other with a linking group. The linking group has a particular structure, and the linking group has a molecular weight of 58 or more and 550 or less. | 06-09-2016 |
| 20160187801 | ELECTROPHOTOGRAPHIC MEMBER, PROCESS CARTRIDGE, AND ELECTROPHOTOGRAPHIC APPARATUS - Provided is an electrophotographic member capable of forming a high-quality electrophotographic image. The electrophotographic member includes an electroconductive substrate and an electroconductive resin layer on the electroconductive substrate, in which the electroconductive resin layer contains a resin having, in the molecule, a specific cation structure, and a specific anion. | 06-30-2016 |
| 492019000 | Hand held or guided | 1 |
| 20090075797 | ROLLER COVER SUPPORT ASSEMBLY WITH ROLLER COVER RETENTION SPRING - A roller cover support assembly includes a roller cover support mountable for rotation on a roller frame shaft and a resiliently deformable annular retention spring including a plurality of circumferentially spaced convex arcs having peaks engageable with the inner diameter of a roller cover when forced over the retention spring for frictionally retaining the roller cover on the roller cover support. These peaks may have an axial length for increasing the frictional contact between the convex arcs and inner diameter of the roller cover when forced over the retention spring and inwardly tapered outboard ends for ease of forcing the roller cover over the retention spring. The convex arcs may be interconnected by concave arcs between the convex arcs at respective tangent points of the arcs. | 03-19-2009 |
| 492020000 | Paper treatment | 4 |
| 20080207419 | EXPANDER ROLLER - A roller for a web-processing machine has a support core, which is braced in the region of both its ends via a respective bearing arrangement, and an outer covering, which in its axially central region is braced in a radially fixed manner in relation to the support core and in the region of its two ends is braced in a radially displaceable manner in relation to the support core by a respective additional bearing arrangement, whereby the radially extending center plane of both the support core bearing arrangement and the outer covering bearing arrangement lies axially within the outer covering, and the outer covering is displaceable in the region of its two ends respectively by an actuator arranged preferably within the outer covering. | 08-28-2008 |
| 20080220956 | Spreader Roll - A spreader roll comprising at least one actuator and a stationary and most advantageously curved spreader-roll axle ( | 09-11-2008 |
| 20130231230 | METHOD FOR MODERNIZING A MULTIROLL CALENDER, IN PARTICULAR FOR MODERNIZING A SUPERCALENDER AND A MODERNIZED MULTIROLL CALENDER, IN PARTICULAR A MODERNIZED SUPERCALENDER - A method for modernizing a existing multiroll calender, having at least one stack of calender rolls ( | 09-05-2013 |
| 20150148206 | ROLLER, AND METHOD FOR MANUFACTURING THE SAME - A roller is particularly suited for use in a machine for manufacturing and/or finishing a fibrous web, such as a paper web or cardboard web. The roller includes a roller core and, configured thereon, a roller covering. The covering has at least one layer of a resin material with at least one fiber material embedded therein. The at least one layer has an outer surface that is suitable for coming into direct or indirect contact with the fibrous web. The at least one fiber material here comprises fibers having a linear weight from 0.5 to 5 dtex, preferably from 0.5 to 2 dtex. | 05-28-2015 |
