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 cermet powder for thermal spray coating, which is sprayed on a roll surface of a conveyer roll inside a furnace for heat treating a high tensile strength steel strip thereby to form a coating film, comprises: an alloy powder containing 3 to 8 mass % of Al, 16 to 25 mass % of Cr, 0.1 to 1 mass % of Y, and at least one of Co and Ni as the residual, with respect to the whole amount of the cermet powder; and a ceramic powder containing at least one of 1 to 5 mass % of a boride and 5 to 10 mass % of a carbide, with respect to the whole amount of the cermet powder.

Abstract: A roller for use in a coating machine comprises a metal core 1 having a dielectric cover 2. The cover is provided with an engraved pattern of ridges and grooves. The core is also provided with a pattern in register with the pattern in the cover such that an electrostatic field generated above a web supported on the roller may be made substantially uniform.

Abstract: A method and apparatus for obtaining a desired nip pressure distribution profile in the cross direction of a paper web. The paper web passes through a nip, the latter defined by at least one elastomer covered roll, the covered roll having polarizable particles or magnetic particles embedded therein. A plurality of spaced plates or spaced coils each generate a local field (respectively electric or magnetic) which acts upon individual spaced zones or regions along the covered roll. The field may thus be an electric field or a magnetic filed. The effect of the field is to change the effective modulus of the elastomer by acting on the particles. In turn, this action varies the nip pressure pulse as to exert a desired pressure at each of a plurality of spaced zones or regions on the paper web, to thus create or process a more uniform product in the nip. The method and apparatus can be used, for example, to improve web moisture profiles in the press section of paper machines.

Abstract: The invention provides a roll member capable of preventing a sheet of recording paper from wrinkling. A metal compound MmXn and an inorganic fine powder are added to a silicone rubber layer forming the surface layer of the roll member. In the compound formula, M is a cation selected from among ions of Al, Sc, Cr, Fe, Co, Ni, Cu, Zn and Ga, and X is an anion selected from among ions of halogens, inorganic acids and organic acids.

Abstract: The present invention relates to articles, having an extended useful life, which are used in contact with high temperature molten aluminum or molten zinc baths. One aspect of the invention encompasses articles, such as bearings, bushings, couplings or rollers, used in contact with molten aluminum or molten zinc which is coated with a high density coating consisting of a metal selected from Groups Vb, VIb, or VIIb metals (preferably molybdenum or tungsten), in pure or alloyed form. These coatings generally have a thickness of from about 0.06 to about 0.30 inch. Another aspect of the present invention encompasses a roll for guiding steel strip through a high temperature aluminizing bath, which utilizes a multi-layer structure, the first primer layer being a Group Vb, VIb or VIIb metal, preferably tungsten or molybdenum (in pure or alloyed form), the second layer comprising MCrAlY in which M is either nickel or cobalt, and the third layer comprising a refractory metal oxide of Al, Zr, Si or Cr.

Abstract: Roll and process for producing roll including a hard roll core, and a resilient covering layer, including a matrix material, located on an outer side of the hard roll core. The matrix material includes a soft metal. The process includes producing a matrix material comprising a soft metal, and applying the soft metal matrix material onto an outer side of the hard roll core, thereby forming the resilient covering layer.

Abstract: Roll and process of producing roll that includes hard roll core, a resilient covering layer located on an outer side of said hard roll core, and a metallic top layer located on an outside of said resilient covering layer. The metallic top layer includes fibers that include at least one of metal fibers and metal-coated fibers. The process includes applying a resilient covering layer onto an outer side of the hard roll core, and winding a metallic top layer comprising a plurality of fibers of at least one of metal fibers and metal-coated fibers onto an outside of the resilient covering layer.

Abstract: A developing roller is provided with a roller core, an electrically conductive layer provided on a circumferential surface of the roller core, and a covering layer provided on the outer circumferential surface of the conductive layer. The covering layer has a thickness of 30 &mgr;m or less, but 0.1 &mgr;m or more, and has at least its surface region formed of a porous body.

Abstract: The present invention has an object to provide a manufacturing method of a long large-diameter composite cemented carbide roll and a hot rolling method of steel using the same. The roll manufacturing method covers a composite cemented carbide roll formed by engaging with, and fixing to, a steel arbor, a sleeve comprising an outer layer made of a cemented carbide formed by integrating a plurality of previously sintered cylindrical formed members and an inner layer made of a steel material formed on the inner surface of the outer layer. The sleeve has a sectional area ratio So/Si of the sectional area So of the outer layer and the sectional area Si of the inner layer in a cross-section perpendicular to the rotation axis within a range of from 0.3 to 20. The sleeve has a length within a range of from 520 to 6,000 mm. When hot-rolling steel, the cemented carbide rolls of the invention are used as work rolls of at least one stand for a roughing mill and/or a finishing mill.

Abstract: A printing press cylinder for a rotary printing press is light in weight and has vibration dampening properties. A metal foam filling is placed inside the cylinder.

Abstract: A toner fuser roller with suppressed electrostatic charge build-up for fixing a toner image to a receiver comprising: (a) a core; and (b) an overcoat layer formed over the core and defining a surface that contacts the receiver, the overcoat layer including electrically conductive fine powder in an amount of 10 to 29 weight percent so as to make the overcoat layer electrically conductive and suppress electrostatic charge build-up and improve thermal conductivity.

Abstract: A nonbleeding bias charging member having an outer layer on a supporting substrate with fluorinated carbon and zinc oxide dispersed in the outer layer material, where bleeding of contaminants to imaging members is decreased or eliminated.

Abstract: A roller for use in a coating machine comprises a metal core 1 having a dielectric cover 2. The cover is provided with an engraved pattern of ridges and grooves. The core is also provided with a pattern in register with the pattern in the cover such that an electrostatic field generated above a web supported on the roller may be made substantially uniform.

Abstract: It is disclosed a process for preparing a removable sleeve to be photoengraved, for use in printing presses, which sleeve is obtained by immersion of a cylinder in a copper-electroplating tank to generate the sleeve itself, and separation of the cylinder is obtained either by an extraction tooling or with use of a metal ring for closure of the holes for air admission, which are designed to create an air cushion enabling easy removal.

Abstract: A elastomer-covered roller (10) is provided with an improved bond coating for bonding the elastomeric cover (14) to the core (11). At least one layer of material (15) is thermally sprayed on the core to form a rough surface having a roughness from 400 microinches Ra to 2000 microinches Ra or greater. In a further improvement a denser, less porous layer (17) may be applied next to the core to protect the core from corrosion, followed by a less dense layer (19) applied to the first layer and having a similarly rough surface (20) for good mechanical bonding.

Abstract: Rollers and cylinders that are useable in rotary printing presses are made using hollow tubular casings having metallic foam cores. The casings and cores are made separately. The cores are then placed inside the casing and the two are secured together in a force-transmitting manner.

Abstract: A cooling drum for a twin-drum continuous casting machine is capable of ensuring an excellent drum body interior cooling effect and advantageously overcoming both the problem of wear of the cooling drum end portions that are pressure-contacted with, and slide on, the side dams and the problem of their local deformation, and that, as a result, can ensure long-term maintenance of a suitable pressure-contact sliding state between the side dams and the cooling drum so as to enable stable continuous casting over a prolonged period. The cooling drum comprises a drum body portion of a material having a thermal conductivity of 100-400 W/mK and drum end portions part or all of whose portions in pressure-contact with the side dams and/or part or all of whose inner regions are formed of a reinforcing material that is a high-hardness material having a Vickers hardness HV (250 g) of 300-600.

Abstract: A heat-fixing silicone rubber roller comprising a roller shaft, a silicone rubber layer provided on the outer periphery of the roller shaft, and at least one of a fluorine resin layer and a fluorine rubber layer, provided on the outer periphery of the silicone rubber layer. The silicone rubber layer comprises a cured product of a silicone rubber composition containing at least (A) an organopolysiloxane with an average molecular weight of from 30,000 to 100,000, having in one molecule at least two alkenyl groups bonded to silicon atoms; (B) an organohydrogenpolysiloxane having in one molecule at least two hydrogen atoms bonded to silicon atoms; the hydrogen atoms bonded to silicon atoms being in the weight that is from 0.1 to 3.0 equivalent weight per one alkenyl group in the component (A); and (C) a platinum group metal catalyst. The heat-fixing silicone rubber roller has a coating layer of fluorine resin and/or fluorine rubber excellent in interlaminar adhesion and durability.

Abstract: The present invention is related to a device for varying a cylinder's effective diameter. It includes a shell member being removably mounted on a surface of a cylinder. On the easy exchangeable shell member having a base plate an elastic material is provided allowing for a compressible surface gain.

Abstract: An article of manufacture having a wear-resistant cylindrical surface is made up of a metallurgically tough base steel with a substantially cylindrical surface, a thin, cylindrical metal sleeve mated to and affixed to the cylindrical surface of the base steel, and a composite metallic coating containing particles having a hardness greater than Rockwell C 70 metallurgically bonded to the surface of the sleeve opposite the base steel/sleeve interface.

Abstract: A method for manufacturing a microporous film comprising the steps of:

Abstract: The present invention is directed to the texturing of rolls for rolling sheet and plate metals, such as aluminum and aluminum alloys, other metals and their alloys, laminates and composites, where the rolled sheet or plate is textured by the textured roll.

Abstract: Disclosed is a conductive rubber roller, comprising a core metal shaft, an ionic conductive layer formed to surround the outer circumferential surface of the core metal shaft and consisting of a high molecular weight elastomer containing an ionic conducting agent or a foamed body of such a high molecular weight elastomer, an electron conductive layer formed to surround the outer circumferential surface of the ionic conductive layer and consisting of a high molecular weight cellular elastomer containing an electron conducting agent or a high molecular weight cellular elastomer containing an electron conducting agent, a toner contamination preventing layer formed to surround the outer circumferential surface of the electron conductive layer, and an insulating annular sealing member mounted to each of both edges of the ionic conductive layer and the electron conductive layer both extending in the longitudinal direction of the metal core wherein a relationship R1>R2>R3, where R1, R2 and R3 denote, respectiv

Abstract: Hardfacing for a sugar mill roller is disclosed including a wear resistant material supported by a mild steel matrix and applied to the outer surface of the sugar mill roller. A method of hardfacing a sugar mill roller is also disclosed wherein a mild steel weld pool is formed on the surface of the roller, a particulate wear resistant material is impinged on the weld pool, and the weld pool is allowed to solidify. A method of applying a hardfacing capping to a ridge profile of a sugar mill roller is also disclosed, wherein hardfacing composition comprising a mild steel matrix material is progressively laid up by welding and a particulate abrasion resistant material is continuously impinged thereon.

Abstract: A developing roller has a core bar, an electrically conductive layer formed on the circumferential surface of the core bar, and a covering layer formed on the circumferential surface of the conductive layer. The covering layer includes a reaction product produced by subjecting a reaction mixture containing a polyol, an isocyanate compound and a both-terminal reactive silicone oil to a reaction condition for them, and has a dynamic friction coefficient against paper of 0.9 or more and less than 1.2.

Abstract: An overlayer for a use on industrial components such as steel mill caster rolls which require enhanced abrasion, corrosion, and gall resistance. The overlayer has relatively lower carbon levels and relatively higher molybdenum levels relative to other alloys used as overlayers, The overlayer has reduced susceptibility to sensitization and enhanced corrosion resistance.

Abstract: A roll for use in the manufacture of paper and board, a press roll, in particular a center roll in a press, a backup roll for an extended-nip press roll, a hot press roll, or equivalent, which is in direct contact with a wet paper web, or a calender roll, a method for manufacturing the same and a coating composition therefor including an adhesion layer arranged on the frame part of the roll and a ceramic layer arranged on the adhesion layer. The ceramic layer has a thickness of from about 100 &mgr;m to about 2000 &mgr;m and includes from about 50% to about 95% by weight of Cr2O3 and from about 3% to about 50% by weight of TiO2, or from about 50% to about 80% by weight of Al2O3 and from about 20% to about 50% by weight of ZrO2, or exclusively Al2TiO5. The outer face of the ceramic layer is finished until the roughness Ra is from about 0.2 &mgr;m to about 2.0 &mgr;m and/or the porosity of the outer face of the roll is from about 1% to about 20%.

Abstract: An insulating roll is provided which is constructed with a roll body formed of a plurality of inorganic material-derived discs laminated with each other and positioned axially of and around a metal conduit, and a heat-resistant metal tube disposed integrally over an outer periphery of the roll body. A tubular cover formed by spray coating a ceramic material on the heat-resistant metal tube, or a sleeve made of sintered ceramic material may be disposed, where desired, in place of the heat-resistant metal tube. This roll has low thermal conductivity and high impact strength without involving feduction of the surface temperature of a material being heat treated in a furnace, or reduced ambient temperature in the furnace during heat treatment.

Abstract: Rolls for metal shaping have at least a peripheral surface of an iron-based Fe—B or Fe—B—C cast alloy having from 1 to 20 wt % chromium; from 0.5 to 3 wt % boron; up to 1.0 wt % carbon; or higher carbon if substantial amounts of strong carbide forming elements such as Mo, V, Ti, W and Nb are present; optional alloying additions including the Mo, V, Ti, W and Nb and also including Si, Al, Mn, Ni and Cu; and, apart from incidental impurities, a balance of Fe.

Abstract: A member for feeding sheets is provided with a core and a cover mounted on the core. The cover is made of a conductive material or one whose coefficient of friction is lower than that of the sheets.

Abstract: A combined roll is provided which offers excellent resistance to thermal shock. In this combined roll, an external ring portion is formed of a cemented carbide, and an internal ring portion is formed of a ductile iron metallurgically bonded to the external ring portion by means of casting. The external ring portion is formed of a cemented carbide containing, as binder phase-defining components, Co: 5-27%, Ni: 2-12% and Cr: 0.3-3% and WC as substantially all of the balance and as a hard phase-defining component. The internal ring portion is formed of a ductile iron composed of C: 3 4.5%, Si: 1.5-4.5%, Mn: 0.1-2% and Mg: 0.02-0.2% and, as the balance, Fe and incidental impurities. The internal ring portion may also contain 0.1-5% of one or more of Mo, Cu, Cr, V, W, Sn and Sb. The internal ring portion contains a cored spheroidal graphite structure dispersed in a mixed phase of either perlite, beinite and martensite phases with a ferrite phase.

Abstract: High-quality high-speed steel roll which is markedly excellent in abrasion resistance and free of carbide segregation even in the case of production by centrifugal casting of economical benefit; it comprises an outer layer containing, by all weight ratios, C; 2.4-2.9%, Si; not more than 1%, Mn; not more than 1%, Cr; 12-18%, Mo; 3-9%, V; 3-8% and Nb; 0.5-4%, and meeting with the following equations (1) and (2) at one time,0.27.gtoreq.Mo (%)/Cr (%).ltoreq.0.7 (1)C (%)+0.2.multidot.Cr (%).ltoreq.6.2 (2)the outer layer further containing as the balance Fe and unavoidable impurities.

Abstract: A composite roll including one or more rings of cemented carbide metallurgically bonded to a cast iron casing. The composite roll may be used for hot or cold rolling. The cast iron has the following composition in addition to Fe, in weight %, 1.9-2.8% Si, 0.02-0.10% Mg, 0.5-4% Ni, 0.1-1% Mn, balance Fe and a C.sub.eqv =2.5-6.

Abstract: A twin drum-type continuous casting process for casting thin cast strip by solidifying molten steel continuously fed between a pair of cooling drums placed parallel to each other, wherein the cooling drums are given an added degree of concave crown such that a solid fraction at the thickness center of the thin cast strip, when the distance from the edges toward the center of the thin cast strip at the closest position of the cooling drums is within 50 mm, is exhibited which is a value greater than the fluid critical solid fraction, or alternatively the cooling rate near the edges of the cooling drums is improved.

Abstract: This invention relates to a process for manufacturing a charging roller used in an image formation device according to the method of electrophotography; and more particularly, to a process for forming the surface layer with uniform resistivity on the surface of the charging roller coated with certain soluble conductive agent, thus ensuring better charging effects.

Abstract: A method for coating a printing machine cylinder, especially a rubber blanket cylinder of a web- or sheet-fed rotary offset printing machine, includes applying to a cylinder body a first layer containing at least one zinc-bearing substance selected from the group consisting of ZnFe, ZnCo, ZnNi and Zn.

Abstract: A press roll for a paper or board machine, a method for manufacturing a roll for a paper or board machine and a coating composition for a roll which enable the roll to endure difficult corrosion conditions. An adhesion/corrosion-protection layer having a thickness of from about 150 .mu.m to about 300 .mu.m is applied onto the frame part of the roll by a high-velocity flame spraying technique. The adhesion/corrosion-protection layer contains a nickel-chromium alloy. A tight-ceramic layer having a thickness from about 50 .mu.m to about 150 .mu.m is applied onto the adhesion/corrosion-protection layer by a high-velocity flame spraying technique and includes from about 50% to about 100% of Al.sub.2 O.sub.3 and optionally includes up to about 50% of TiO.sub.2 and/or any amount of Al.sub.2 TiO.sub.5. A porous ceramic layer is applied onto the tight ceramic layer. The tight-ceramic layer may include only Al.sub.2 TiO.sub.5 instead of Al.sub.2 O.sub.3, with or without TiO.sub.2.

Abstract: A roll of a winding equipment in a rolling factory is formed of a roll body, a hardened buildup substrate formed on a surface of the roll body, and a carbide-particle-dispersed-type autogenous-alloy-sprayed layer having a thickness of at least 0.5 mm and formed on the substrate. The autogenous-alloy-sprayed layer contains 3-60% by weight of carbide particles or complex carbide particles. The carbide particles or complex carbide particles have a particulate shape or a leaf shape with a size of 3-300 .mu.m. The roll can exhibit good abrasion resistance and plate flaw resistance, and good conveyance property for a passing plate material.

Abstract: Apparatus for drying receiver sheets prior to such receiver sheets receiving electrophotographic images, including at least one set of preconditioning rotatable rollers with each preconditioning rotatable roller in the set touching an opposing preconditioning rotatable roller to form a nip, wherein at least one of the preconditioning rotatable rollers in the set is formed from zirconia ceramic or zirconia composite; and the apparatus heating at least one of the surfaces of the preconditioning rollers of the set to dry receiver sheets as each passes through the nip.

Abstract: A transport roller having a core and a first bonding layer at least partially surrounding and bonded to the core. Further, roller has a first layer of corrosion material at least partially surrounding and bonded to the first bonding layer, wherein said corrosion resistant material is electroplated nickel or electroless nickel. In addition, the roller has a second bonding layer for bonding a second layer to the core. The second layer includes a wear and abrasion resistant material, wherein the wear and abrasion resistant material is selected from the group including polyurethane; acrylic; silicon dioxide; alumina; chromium oxide; zirconium oxide; composites of zirconia-alumina; or a mixture thereof.

Abstract: A multi-layer structure roller is a muti-layer structure composed of a tubular-shaped metal-made outer cylinder section located at the outer-most position, a tubular-shaped metal-made middle cylinder section located on the inside of the outer cylinder section, and an tubular-shaped metal-made inner cylinder section located on the inside of the middle cylinder section, in which coefficient of linear expansion of the middle cylinder section is greater than the coefficient of linear expansion of the outer cylinder section, the outer cylinder section and the middle cylinder section are coupled by using the difference in heat-expansion caused by heating both cylinder sections in the state sandwiching an elastic body between both cylinder sections to be laminated, tapers are respectively provided at the inner circumference of the middle cylinder section and the outer circumference of the inner cylinder section to fit the taper of the middle cylinder section, certainly coupled with the outer cylinder section to sand

Abstract: A multi-layer structure roller includes a tubular-shaped metal-made outer cylinder section located at the outer-most position, a tubular-shaped metal-made middle cylinder section located on the inside of the outer cylinder section, and an tubular-shaped metal-made inner cylinder section located on the inside of the middle cylinder section, in which coefficient of linear expansion of the middle cylinder section is greater than the coefficient of linear expansion of the outer cylinder section, the outer cylinder section and the middle cylinder section are coupled by using the difference in heat-expansion caused by heating both cylinder sections in the state sandwiching an elastic body between both cylinder sections to be laminated, tapers are respectively provided at the inner circumference of the middle cylinder section and the outer circumference of the inner cylinder section to fit the taper of the middle cylinder section, certainly coupled with the outer cylinder section to sandwich the elastic body by expa

Abstract: A roller for an image forming apparatus comprises: a core body having a shaft positioned in the center thereof, the core body being formed by solidifying a fluid around an outer circumference of the shaft; and a surface layer formed on a surface of said core body, the surface layer being made of hard rubber and having a uniform thickness over the surface of the core body. A mold for the roller, comprises: an inner surface whose section is the same as a section of the core body; a pair of half-split bodies, one end wall of each half-split body having a recess for clamping the shaft, other end wall of each half-split body having a injecting hole for injecting a core body forming fluid therefrom; and a stopper body serving as an aligning member having a through hole in the middle thereof for inserting the shaft thereinto, the stopper body further projecting a stopper on an outer circumference thereof for fitting the stopper into the injecting hole.

Abstract: A fixing member suitable for use in an electrophotographic image forming apparatus is formed by providing a silicone rubber surface layer containing a metal compound represented by M.sub.m X.sub.n, wherein M denotes a metal cation selected from Al, Sc, Cr, Fe, Co, Ni, Cu, Zn and Ga, X denotes an anion selected from halogens, inorganic acid ions and organic acid ions, and m and n are positive integers satisfying m.times.(valence of M)=n.times.(valence of X). The silicone rubber surface layer can exhibit improved wear resistance while retaining a good toner releasability.

Abstract: A roll outer layer material for hot rolling includes, as analyzed in weight percent, of 2.5-4.0% C, 6.0-20% Cr, 3.0-10.0% V, 0.6-5.0% Nb, 2.0-15% Mo, 3.0% or below Si, 3.0% or below Mn, C, V, Nb and Cr satisfying a following formula (1),10.5(%).ltoreq.6.5.C(%)-1.3.V(%)-0.7.Nb(%).ltoreq.2.Cr(%)-2(%)(1), and the balance being Fe and incidental impurities. A method of manufacturing a roll for hot rolling includes the steps of centrifugally casting an outer layer material having the above composition, centrifugally casting graphite steel containing 0.5% or above of C as an intermediate layer, and casting an axis material which is a spheroidal graphite cast iron, a flake graphite cast iron or a graphite steel. C is present in the intermediate layer in an amount which satisfies a following formula (2),C (intermediate layer).gtoreq.2.0-0.5 (C-0.2 V-0.

Abstract: A fuser system member for use in an electrophotographic apparatus for fusing toner images to a copy substrate, the fuser member having a substrate, a heat generating layer provided thereon comprising a fluorinated carbon filled fluoroelastomer, and an outer toner release layer provided on the heat generating layer.

Abstract: An improved caster roll core and shell assembly includes two overlays of stainless steel of different hardness which are deposited on the surface of the roll core, thus prolonging the life of the roll. The method for manufacturing the roll is also described.

Abstract: A forged roll for rolling a seamless steel pipe, having excellent biting properties and wear resistance. The forged roll includes a high carbon alloy cast steel comprising about 1.10-1.85 wt % carbon, about 0.3-1.2 wt % silicon, about 0.4-1.5 wt % manganese, about 0.5-2.0 wt % nickel, about 0.5-2.0 wt % chromium and iron. Heat treatment for spheroidal carbide formation is performed so that the spheroidal carbide covers about 35-55% of the area of the roll metallurgical structure.

Abstract: The present invention is directed to a liquid metering and coating device comprising a perforated hollow member; a liquid-absorbent porous material within said hollow member; at least one shaft component which seals the liquid-absorbent porous material within the hollow member, a means for air passage; a liquid diffusion layer in contact with the perimeter of the perforated hollow member; and a liquid permeation regulating layer in contact with the perimeter of the liquid diffusion layer. The liquid metering and coating device can satisfactorily apply a liquid to a surface with exceptional accuracy, uniformity and durability.