Abstract: A detritus removal roller construction particularly suited for a lint roller is disclosed having an elongated strip with a backing layer and an adhesive layer overlying one side of the backing layer. The strip has a first end, a second end and two spaced apart sides and is wound from its first end to its second end into a tubular cylindrical roll. The backing layer is made of a compressible material which retains and/or creates an electrostatic charge in use.

Abstract: A conductive roller including a core metal and a conductive elastic layer disposed on a peripheral surface of the core metal. The conductive roller has an electrostatic capacity not more than 50 pF at 100 Hz and an electric resistance not less than 105? nor more than 109? at an applied voltage 1000V. An electrostatic capacity C (L) at an alternating low frequency (L) and an electrostatic capacity C (H) at an alternating high frequency (H) satisfy the following relationship: 0<(C(L)?C(H))/(log10 Hz(H)?log10 Hz(L))<10.

Abstract: A conductive roller including at least one conductive elastic layer 1 formed of a polymer composition includes a main-component polymer not containing chlorine nor bromine and containing polyether or/and a cyan group; and an anion-containing salt having a fluoro group and a sulfonyl group. The anion-containing salt having the fluoro group and the sulfonyl group includes at least one salt selected from among a salt of bisfluoroalkylsulfonylimide, a salt of fluoroalkylsulfonic acid, and a salt of tris(fluoroalkylsulfonyl)methide.

Abstract: A sheet feeding device comprises a sheet feeding member having an outer layer thereof, a sheet loaded on a sheet loading member being depressed on a peripheral surface of the outer layer, the sheet feeding member delivering the sheet depressed to the peripheral surface, through rotation of the peripheral surface. An inclination member having a depression portion and an inclined surface, the depression portion depressing the sheet on the peripheral surface, and a leading edge of the sheet being brought in contact with the inclined surface. The outer layer of the sheet feeding member is formed of a cross-linked rubber material which has a JIS-A hardness in a range between 25 degrees and 40 degrees, a tearing strength measured with a JIS B-type specimen, which is 10 N/mm or more, and a viscoelastic characteristic expressed by a loss tangent, which is 0.045 or less.

Abstract: A toner supply roller comprises a metallic core shaft and an electrically conductive elastic layer formed to surround the outer surface of the shaft. The conductive elastic layer is formed of open-cell polyurethane foam. The polyurethane foam is impregnated with an electrically conductive polymer and a binder.

Abstract: A conductive rubber member having a rubber layer, disposed in an outermost layer thereof, formed by using a rubber composition containing an ionic-conductive rubber, the rubber composition further containing a dielectric loss tangent-adjusting filler. The conductive rubber member has a dielectric loss tangent of not less than 2.0 nor more than 5.0, when an alternating voltage of 5V with a frequency of 100 Hz is applied to the conductive rubber member.

Abstract: A feed wheel includes a hub and a discontinuous tread removably fitted about the hub. At leading and trailing ends of the discontinuous tread are mateable non-planar female and male surfaces which interfit with one another and tend to interlock the tread ends together. The tread has locking lugs formed under leading and trailing ends and an intermediate segment of the tread which fit into holes configured and located in the hub complimentarily to the locking lugs. The holes and locking lugs are oriented relative to one another so as to enable the tread to be retained about the hub with the tread ends interlocked together during operation of the feed wheel.

Abstract: A developing roller is provided having an elastic layer and a surface layer superposed thereon. The surface layer is formed of a resin material containing nitrogen atoms, and contains at least two types of particles, organic-compound particles (M) and organic-compound particles (N). The particles (N) are composed of nitrogen-containing heterocyclic-compound particles. The number-average particle diameter of the particles (N) in the surface layer is smaller than the number-average particle diameter of the particles (M) in the surface layer. Where the universal hardness of the elastic layer is represented by A and the universal hardness of the developing roller is represented by B, they satisfies 0.9?B/A?1.8.

Abstract: A replaceable fuser member including a thin, seamless or welded high temperature nickel sleeve, a base cushion positioned around the sleeve, a primer coat of a silane coupling agent containing epoxies on the sleeve, and an outside coating applied over the base cushion elastomer layer. The sleeve is replaceable on a mandrel positioned in an electrophotographic copying machine in a fuser station of the electrophotographic copying machine.

Abstract: A method of treating a fuser member surface to extend the life thereof includes applying to the fuser member surface an ethylene diamine tetraacetate. In addition, the fuser member may be subjected to a sonic treatment during the application of the ethylene diamine traacetrate in order to remove additional materials therefrom that are resistant to removal by the ethylene diamine traacetate.

Abstract: A patterned element for use in an embossing and adhesive application process. The patterened element comprises a material having an pattern disposed thereon, wherein the material comprises a polymer and has a Shore A hardness of greater than about 70, and has a critical surface energy of less than about 30 dynes/cm.

Abstract: An electroconductive rubber roller (10) whose outermost layer consists of a rubber layer (1) made of a rubber composition containing an ionic-conductive rubber as a main component thereof. The surface of the rubber layer consists of an oxide film; and the rubber composition contains a dielectric loss tangent-adjusting filler to set a dielectric loss tangent of the electroconductive rubber roller to 0.1 to 1.5. Weak electroconductive carbon black and/or calcium carbonate treated with fatty acid can be used as the dielectric loss tangent-adjusting filler.

Abstract: Impression roller (10) for a laminating machine for producing a packaging material which comprises a carcass layer (40) consisting of paper or carton, which carcass layer exhibits through holes (42), and which carcass layer exhibits, on one of its sides, a barrier layer (44), a plastic lining (46, 47) which is arranged outside the barrier layer, and a film of laminant thermoplast (43) which is arranged between the carcass layer (40) and the barrier layer (44), with the said impression roller exhibiting a jacket surface which is faced with an inner facing layer (12) consisting of an elastic material, exhibiting a first hardness and a first thickness. According to the invention, an outer facing layer (13) consisting of an elastic material, exhibiting a second hardness and a second thickness, with the said first hardness being greater than the said second hardness and with the said first thickness being greater than the said second thickness, is arranged on the outside of the said inner facing layer (12).

Abstract: A transfer cylinder sleeve is provided for an offset printing machine including an inner carrier layer, a compressible layer and a covering layer, where at least one of the layers has a joint or a gap and provided that when a joint or a gap is used in the covering layer, then the transfer cylinder sleeve is applied to a transfer cylinder in register so that the joint in the covering layer rests opposite a tension channel of a plate cylinder during rolling contact of the transfer cylinder with the plate cylinder. Optionally, a non-stretchable layer is provided between the compressible layer and the covering layer, or alternatively, a non-stretchable material is provided in the compressible layer itself.

Abstract: A paper machine roll cover surface layer has a mixture of an elastomeric material and HDPE particles. The HDPE particles have surface modification to improve roll cover performance.

Abstract: A fusing-station member, which member can be a compliant fuser roller or a compliant pressure roller, for use in a fusing station of an electrostatographic machine, and which member includes a base cushion layer formed on a core member, with the base cushion layer coated by a thin protective gloss control layer. In certain preferred embodiments, the base cushion layer is a highly cross-linked condensation-polymerized polyorganosiloxane material made by thermal curing of a formulation which includes three types of filler particles, namely hollow flexible microballoon particles, strength-enhancing solid particles, and thermal-conductivity-enhancing solid particles. In other preferred embodiments, expandable microspheres are included in lieu of the hollow flexible microballoon particles in an otherwise similar uncured formulation, which expandable microspheres are transformed into expanded hollow microballoon particles during the thermal curing.

Abstract: A fusing-station member, which member can be a compliant fuser roller or a compliant pressure roller for use in a fusing station of an electrostatographic machine, and which member includes a base cushion layer formed on a core member, with the base cushion layer coated by a thin protective gloss control layer. The base cushion layer is a highly crosslinked addition-polymerized polyorganosiloxane material made by thermally curing, below 100° C., a formulation which includes three types of filler particles, namely hollow flexible microballoon particles, strength-enhancing solid particles, and thermal-conductivity-enhancing solid particles.

Abstract: A method of producing a developing roller, includes providing a roller core having an electrically conductive layer provided on a circumferential surface thereof, applying a reaction mixture containing a fluorine-containing polyol, an isocyanate compound, and a reactive silicone oil having an active hydrogen to a surface of the conductive layer, and subjecting the reaction mixture to a reaction condition for reacting the flourine-containing polyol and the reactive silicone oil with the isocyanate compound.

Abstract: A controlled-modulus fusing station member inclusive of a durable, tough, elastically deformable layer incorporating hollow flexible filler particles. The elastically deformable layer can be a single layer on a substrate, the substrate preferably a core member of a fuser roller or a pressure roller. Alternatively, a protective or gloss control fluoropolymer layer is formed on the elastically deformable layer. The elastically deformable layer is made from a dry formulation inclusive of: a fluoroelastomer powder; microspheres in the form of unexpanded microspheres or expanded microballoons; and solid filler particles including strength-enhancing filler particles and thermal-conductivity-enhancing filler particles. The dry formulation is thermally cured or electron-beam cured.

Abstract: A liquid mixture containing a liquid polymeric material and a granular filler is injected into a mold (11) for centrifugal molding and subjected to centrifugal molding, thereby preparing a cylindrical body including a homogeneous dispersion layer (2) having the filler homogeneously dispersed in the polymeric material and a high-density packed bed (1), formed on the outer peripheral surface side or on the inner peripheral surface side of the homogeneous dispersion layer (2), containing the aforementioned polymeric material more densely filled with the aforementioned filler. The high-density packed bed (1) is removed for exposing the surface of the homogeneous dispersion layer (2). According to this structure, the yield of the elastic cylindrical body can be improved.

Abstract: An electrophotography roller incorporated in an image creating device by the electrophotography comprising a conductive shaft disposed along the center axis, a conductive elastic layer around the shaft, a surface layer on the conductive elastic layer formed concentrically. The JIS A hardness of the conductive elastic layer is 30° or less. The shear modulus of the conductive elastic layer measured in viscoelasticity under the condition of 20° C., 60% PH and 0.1 Hz is 4 105 Pa or more. The width of contact of the roller with another member is sufficiently ensured even under a low pressing pressure. The compression residual strain is small even after the roller is pressed against another member for a long time. If the roller is used as a development roller, a sharp image with less density unevenness due to the residual strain is created.

Abstract: A drive roller having a polyurethane coating that has a coefficient of friction with respect to a belt effective to drive the belt over the operative life of the belt. The drive roller may be included in an image-forming device to drive a belt.

Abstract: A toner supply roll free from occurrence of an imaging failure. The toner supply roll comprises a shaft (1) and a urethane foam layer (2) provided on an outer peripheral surface of the shaft (1), wherein when the urethane foam layer is compressed to a depth of 1 mm from an outermost surface thereof during compression thereof to a depth of 2 mm, a stress F0 occurs in the urethane foam layer and when the urethane foam layer is decompressed to a depth of 1 mm after the compression thereof to a depth of 2 mm, a stress F1 occurs in the urethane foam layer, the urethane foam layer satisfies a relation represented by the following expression (1) at a temperature of 23±3° C. at a humidity of 50±10%: F1/F0?0.7??(1) the stresses F1 and F0 being expressed by a unit of Pa.

Abstract: A roller intended to be in contact with toner particles is provided with a cured resin layer having homogeneously dispersed carbon black aggregates and having a thickness of less than 200 ?m, whereby the carbon black aggregates have a weight average size lower than 30 ?m, a DPB absorption of more than 110 ml/100 g, a BET-surface area greater than 250 m2/g, and coated with an amino silane compound.

Abstract: A charge roller utilizes a foam rubber substance where epichlorohydrin oxide rubber and an acrylonitrile butadiene rubber are mixed at a ratio of 5:95, or utilizing a crosslinking rubber substance made of epichlorohydrin oxide rubber and acrylonitrile butadiene rubber having a polar low molecular polymeric characteristic, thus allowing the charge roller to maintain a low volume resistivity of 107 ? cm to 108 ? cm. As a result, the surface of a photosensitive drum can be charged by a minimum charging voltage, to thereby significantly reduce an amount of ozone. Since a non-crosslinked low molecular polymeric substance existing at a resilient rubber is significantly reduced, the low molecular polymeric substance of the charge roller may not be migrated onto a surface of the photosensitive drum even if the charge roller is in contact with a photosensitive drum for a long time period during a stoppage of operation of an image forming apparatus.

Abstract: An electrophotographic image forming apparatus includes a fixing unit having a heat roller and a press roller which abuts against and presses the heat roller. The image forming apparatus further includes at least one cleaning unit including a backup roller which abuts against and presses the heat roller in order to remove remaining toner attaching to a surface of the heat roller. The backup roller has a two-layer structure of a metal shaft core and a resilient layer, as an outer layer for the shaft core, made of a resilient body. The diameter of the backup roller gradually reduces from a projecting axial center of 10 mm to 30 mm toward two axial ends, so that an entire outer shape of the backup roller forms a crown or spindle like shape.

Abstract: A roller assembly for a sheet material transport assembly is disclosed, wherein skewing of the transported sheet material relative to the transport assembly is reduced. The roller assembly includes an elongate shaft having a compliant layer disposed about the shaft. A relatively non-compliant layer is disposed about the compliant layer to form a tire, wherein the non-compliant layer has a circumference, which is substantially unchanged upon operable loading of the roller assembly.

Abstract: The invention relates to a roller for fluid film preparation, such as for offset printing, having an inside core, a first layer which surrounds the core and has a first hardness, and a second layer which surrounds first layer A and has a second hardness different from that of the first layer. The roller coating, including the first and second layers, is provided, at least in certain sections, with an essentially continuous hardness gradient through the layer thickness. The hardness gradient can be produced by incorporating a gradient of a hardness-modifying substance or agent, or a precursor thereof, e.g. an agent that increases the degree of cross-linking, by means of diffusion or migration of the substance or agent from at least one surface of the roller coating.

Abstract: The present invention provides a fixing roller capable of satisfying releasing ability and scratch resistance all together. The fixing roller comprises a core 16, a primer layer 18 applied on the periphery of the core 18, and a fluororesin top layer 20 applied on the periphery of the primer layer 18, wherein glass particles 24 are mixed into at least one of the primer layer 18 and the top layer 20.

Abstract: In order to manufacture a discharging roller which discharges a recording medium from a recording apparatus, there are a first die formed with a first recess extending in an axial direction of a shaft portion of the discharging roller, and a second die formed with a second recess extending in the axial direction. The first die and the second die are combined such that the first recess and the second recess face to form a continuous cavity. Synthetic resin is injected into the cavity to mold a bore portion of the shaft portion.

Abstract: A paper machine roll cover surface layer has a mixture of an elastomeric material and between about 10 phr and about 24 phr UHMWPE particles.

Abstract: An electrically conductive roll includes a shaft body and at least a conductive elastic layer formed by extrusion on an outer circumferential surface of the shaft body. The conductive elastic layer is formed from at least one conductive rubber composition which includes a rubber material, a thermoplastic resin having crosslinkable double bonds and a melting point in a range from 40° C. to 100° C., and at least one conductive agent. The thermoplastic resin is included in an amount of 5 to 50 wt. % of a total amount of the rubber material and the thermoplastic resin.

Abstract: A resin roller (10) is produced by disposing a core body (21) in a forming metal mold (1) having a cylindrical metal mold (13) and core supporting members (14) furnished at both edge parts of the cylindrical metal mold (13) as well as causing the core supporting members (14) to hold the both edge parts, and pouring a forming resin into the metal mold and solidifying it. The resin roller (10) has the core body (21) of the same outer diameter over a full length and a cylindrical resin-formed body (12), sealing members (24, 26) are furnished around the core body (21) in the vicinity of both edge parts of the resin-formed body (12), and the core body is disposed such that the sealing members (24, 26) contact edge faces (14a) at sides of a roller forming space of the core supporting members (14).

Abstract: An electrically conductive roll includes a center shaft, an electrically conductive elastic layer formed on an outer circumferential surface of the center shaft, and a resistance adjusting layer formed radially outwardly of the electrically conductive elastic layer. The resistance adjusting layer is formed of a rubber composition which includes a rubber material, a thermoplastic resin having crosslinkable double bonds, at least one electron-conductive agent, at least one ion-conductive agent, and at least one electrically insulating filler. The thermoplastic resin, the at least one electron-conductive agent, the at least one ion-conductive agent, and the at least one electrically insulating filler are included in the rubber composition in respective amounts of 3-40 parts by weight, 10-150 parts by weight, not greater than 2 parts by weight, and 20-80 parts by weight, per 100 parts by weight of the rubber material.

Abstract: Elastic roller and process for producing elastic roller. The elastic roller includes a hard roller core and an elastic coating layer at an outer side of the hard roller core. The elastic coating layer includes an elastic matrix material and fillers imbedded in the matrix material, and at least a portion of the fillers include metallic fillers. The process includes combining at least one metallic filler into an elastic matrix material and applying the combined elastic matrix material and at least one metallic filler onto an outer side of the hard roller core to form an elastic coating layer.

Abstract: The invention relates to a method for adjusting the properties of the polymer coating (2) of a roll or a belt (3), whereby the roll or the belt is used for calendering a fibrous web (4) in a roll nip (N), which is formed between the roll or the belt and its backing roll (5), whereby the roll or the belt has a polymer coating comprising fibrous material (1). In the method, the thermal elongation coefficient and/or thermal conductivity of the polymer coating (2) are adjusted by directing the fibre direction of the fibrous material (1).

Abstract: A toner release agent delivery system for a printing device utilizes a roller which has a plurality of layers of a non-woven textile web. The textile web is comprised of substantially all sub-denier fibers. The release agent delivery system with predominately sub-denier fibers has a very high release agent retention capability with a very low leak rate.

Abstract: An oil-coating roller constituted mainly of an oil-retaining layer around a central core and an oil-coating control layer surrounding the oil-retaining layer is provided which does not require a sealing treatment for prevention of oil leakage from the roller end face, and has a long service life. The oil-retaining layer is formed by winding in layers a nonwoven fabric which exhibits an oil-sucking height of not less than 60 mm and has an oil permeability of 40 g/cm2/hr.

Abstract: In a roller enveloping a base body for winding up a material web, particularly a paper web, the circumferential surface contacted by the winding material is more radially resilient near the two roller ends than in the mid-roller area, compensating, at least partially, for a deflection of the base body at the maximum winding diameter. This increased radial resilience near the two roller ends is due to an appropriate resilient layer applied on at least sections of the base body and/or at least one appropriate resilient element placed on the base body.

Abstract: A roll including a core shaft formed from metal, an elastic layer formed from resin or rubber material arranged around the core shaft and having a resistance, and a surface layer arranged around the elastic layer and having a resistance. The resistance of the surface layer is smaller than that of the elastic layer so that the entire volume resistance of the roll is less than a volume resistance of the elastic layer.

Abstract: A process for forming a cover for an industrial roll includes the steps of: providing an elongate cylindrical core having a longitudinal axis; rotating the core about the longitudinal axis; providing a nozzle movable along a nozzle path that is substantially parallel to and above the core longitudinal axis, the nozzle having at least an upstream outlet and a downstream outlet, the nozzle outlets being longitudinally offset a distance from each other; and applying multiple strips of polymeric material to the core through the nozzle outlets as the nozzle moves along the nozzle path such that the downstream strip forms an overlapping spiral inner layer and the upstream strip forms an overlapping spiral outer layer that overlies the inner layer, the inner and outer layers being adhered with the core.

Abstract: A roll comprising polymeric foam having a density of at least about 6 pounds per cubic foot and a compression force deflection of at least about 2.5 pounds per square inch. The roll may be used in image forming devices, and may be specifically employed as a toner added roll in electrophotographic image forming devices for toner applications.

Abstract: A roll for smoothing a web, a process for making the roll and a process of repairing the roll. The roll includes a roll core having an outer surface. A covering layer is disposed on the outer surface of the roll core. The covering layer has an inner surface and an outer surface. The covering layer includes an elastic matrix material. The elastic matrix material includes a mixture of at least one thermosetting plastic and at least one thermoplastic. The process of making includes providing a roll core having an outer surface, forming an elastic covering layer including at least one thermosetting plastic and at least one thermoplastic, and applying the covering layer to the outer surface of the roll core. The process of repairing includes heating an elastic covering layer made from an elastic matrix material which comprises at least one thermosetting plastic and at least one thermoplastic, and allowing any markings in a surface of the covering layer to be filled.

Abstract: A drive roller comprising a polyurethane coating having a coefficient of friction with respect to a belt effective to drive the belt over the operative life of the belt. The drive roller may be included in an image-forming device to drive a belt.

Abstract: A method of manufacturing a rolling shaft of a photo printer mainly has two rubber casings sleeved at two ends of a long cylindrical rod which is then placed horizontally; after that, the long cylindrical rod is sprayed with a layer of resin thereby forming an rubber wheel at the central position of the long cylindrical rod; finally, the rubber wheel is adhered with a layer of fine grain material with high coefficient of abrasion such that the rolling shaft has a preferred abrasiveness and causes no chemical reaction with the photo paper.

Abstract: It is an object to provide a thermoplastic elastomer material for a paper feeding roller having all of a high coefficient of friction, great delivery force, a polishing workability and an abrasion resistance which are characteristics to be required for the paper feeding roller. It is preferable that 20 to 80 parts by weight of an olefin-based thermoplastic elastomer and 80 to 20 parts by weight of a styrene-based thermoplastic elastomer are contained and a total amount of both thermoplastic elastomers is 100 parts by weight.

Abstract: A paper-feeding roller (1) formed by cylindrically molding a thermoplastic elastomer composition containing a thermoplastic resin or a thermoplastic elastomer in which a rubber or a thermoplastic elastomer that can be crosslinked is dispersed by dynamic crosslinking. A surface layer of the paper-feeding roller (1) contains titanium oxide at not less than 1.5% nor more than 50% in a volume fraction.

Abstract: A roll for a paper or board machine is produced by forming a tubular roll blank by bending out of a planar sheet or by means of centrifugal casting. The roll blank is first coated with a material having a modulus of elasticity and a density lower than those of steel and the coated roll blank is turned on a lathe to a desired shape and to a desired surface quality.

Abstract: A toner supply roller comprises a metallic core shaft and an electrically conductive elastic layer formed to surround the outer surface of the shaft. The conductive elastic layer is formed of open-cell polyurethane foam. The polyurethane foam is impregnated with an electrically conductive polymer and a binder.

Abstract: The invention includes a method for producing a covered roll having a reinforcement fiber mat under layer infused with low viscosity thermoset resin and a smooth high temperature, high performance polymeric outer layer. The mat is formed of a plurality of layers, each layer having a leading edge that abuts a following edge when wrapped over the roll core, each subsequent layer being affixed to the previous layer along a seam, the seams being spaced apart angularly from one another to prevent irregularities over the surface of the resulting roll core. One or more layers of the dry reinforcement fiber mat may be formed of a two-ply construction, the first ply having fibers arranged in a random pattern, the second ply having aligned fibers oriented either parallel or perpendicular to the roll core central axis. The invention also includes an improved mold tape assembly for use in applying a polymeric cover over a roll core and an inventive apparatus for fabricating the mold tape assembly.