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Disk and process for producing base material for disk, and disk roll

Tue, 26 May 2015 08:00:00 EDT

The present invention relates to a process for producing a base material for disks of disk rolls, in which the disk roll contains a rotating shaft and a plurality of the disks fitted on the rotating shaft by insertion whereby the outer peripheral surface of the disks serves as a conveying surface, in which the process contains molding a slurry raw material containing inorganic fibers, an inorganic filler having an aspect ratio of from 1 to 25 and an inorganic binder into a plate shape; and drying the molded plate.



Inductively heatable cylinder

Tue, 26 May 2015 08:00:00 EDT

A device for heating at least one tool that is disposed on the circumference of a rotating cylinder, for example on the circumference of an embossing cylinder. The embossing tool is produced from a magnetizable material and it is fixed to a carrier sleeve that is produced from a non-magnetizable material.



Rotating body and bearing

Tue, 12 May 2015 08:00:00 EDT

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.



Electrophotographic member, process cartridge and electrophotographic apparatus

Tue, 28 Apr 2015 08:00:00 EDT

An electrophotographic member whose performances are hardly changed even after a long-term use is provided. An electrophotographic member having a mandrel, an elastic layer and a surface layer, wherein the surface layer contains a titanium oxide film having chemical bonds represented by the following formula (1) and formula (2) is provided. O—Ti—O Formula (1) Ti—O—C Formula (2)



Pulling rolls with spring elements having increased angular length for use in glass manufacturing and processes incorporating the same

Tue, 28 Apr 2015 08:00:00 EDT

In one embodiment, a pulling roll for drawing glass sheet in a down-draw process includes a shaft member and a compliant cover assembly positioned on the shaft member. The compliant cover assembly includes at least one traction disk positioned on the shaft member. The at least one traction disk includes an annular hub and a plurality of spring elements integrally formed with the annular hub. The spring elements project outward from the annular hub such that an end of each spring element is positioned radially outward from a base of each spring element and is circumferentially offset relative to the base of each spring element.



Roller device, image forming apparatus, and method for manufacturing roller

Tue, 21 Apr 2015 08:00:00 EDT

A roller device includes a roller main body, a shaft member, flanges, a position restricting member, a plate-shaped member, a biasing member, and a securing member. The shaft member is inserted into the roller main body and the flanges in contact with both ends of the roller main body. The position restricting member is secured to the shaft member at an end portion side of the shaft member with respect to the flange. The position restricting member restricts an axial position of the flange. Movement of the plate-shaped member toward the end portion side in an axial direction is restricted by the position restricting member. The biasing member biases the flange toward a center side in the axial direction. The securing member is disposed at the end portion side of the shaft member with respect to the plate-shaped member. The securing member engages the position restricting member.



Fuser member

Tue, 21 Apr 2015 08:00:00 EDT

The present teachings disclose a fuser member comprising a substrate, a functional layer disposed on the substrate and an outer layer disposed on the functional layer. The outer layer comprises a cross-linked perfluorinated polyether.



Semiconductive roller

Tue, 21 Apr 2015 08:00:00 EDT

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.



Sheet feeder

Tue, 21 Apr 2015 08:00:00 EDT

A sheet feeder is provided that includes a driving roller, a driven roller configured to rotate in accordance with rotation of the driving roller and feed a sheet while pinching the sheet with the driving roller, an elastic shaft inserted through the driven roller and configured to rotatably support the driven roller, the elastic shaft including a protrusion formed on at least one end of the elastic shaft in an axial direction of the elastic shaft, the protrusion protruding outward in a radial direction of the driven roller, and two recess-shaped bearings configured to support two end portions of the elastic shaft in the axial direction, respectively, at least one of the bearings including a contact surface configured to contact the protrusion when the elastic shaft is supported by the bearings.



Sliding sleeve

Tue, 21 Apr 2015 08:00:00 EDT

The invention relates to a telescopable steering spindle having an inner spindle and an outer spindle, which are arranged coaxially in relation to one another and have an out-of-round cross section for torque transmission, wherein an intermediate space is provided between the outer spindle and the inner spindle, a sliding sleeve being arranged in the said intermediate space, wherein the sliding sleeve is provided with a surface structuring on at least one surface facing the inner spindle or the outer spindle.



Charging member and electrophotographic apparatus

Tue, 14 Apr 2015 08:00:00 EDT

The present invention provides a charging member which has a low compression set and which can suppress the generation of image defects. A layer of an unvulcanized rubber composition including an unvulcanized acrylonitrile butadiene rubber and N,N′-methylenebis(1,4-phenylene)dimaleimide is vulcanized.



Roller for imaging apparatus and imaging apparatus including the roller

Tue, 14 Apr 2015 08:00:00 EDT

A roller includes a shaft including reinforcing fiber and a binder resin; and an elastic body surrounding an outer surface of the shaft, wherein an average length to average diameter ratio (L/D) of the reinforcing fiber is from about 15,000:1 to about 50,000:1.



Process for producing conductive rubber roller, and roller for electrophotographic apparatus

Tue, 07 Apr 2015 08:00:00 EDT

This invention provides a process for producing a conductive rubber roller having small aspect ratios of inner and outer diameters, having a stable measure of its inner diameter, having uniform cell distribution and being free from non-uniformity of hardness and electrical resistance in the peripheral direction. The process has a step of continuously extruding a tube composed of a specific unvulcanized rubber composition from a rubber extruder in a microwave vulcanizing unit, and a step of foaming and vulcanizing the tube by using a microwave irradiator having a microwave irradiation zone 4 m or less in length while being transported at given speed. The foamed rubber tube has an inner diameter 20 to 35% smaller than the outer diameter of the conductive core material over the whole region in the lengthwise direction, and the conductive core material is press-fitted into the foamed rubber tube without using any adhesive.



Pulling rolls with deflection limitation for use in glass manufacturing and processes incorporating the same

Tue, 31 Mar 2015 08:00:00 EDT

In one embodiment, a pulling roll for drawing glass sheet in a down-draw process includes a shaft member and a compliant cover assembly positioned on the shaft member. The compliant cover assembly includes at least one traction disk and at least one deflection limiting disk positioned on the shaft member. The at least one traction disk includes an annular hub and a plurality of spring elements integrally formed with the annular hub. The at least one deflection limiting disk includes at least one deflection limiting element positioned on each deflection limiting disk. The at least one deflection limiting element engages at least a portion of at least one traction disk upon a predetermined amount of inward radial deflection of the plurality of spring elements, thereby limiting the inward radial deflection of the plurality of spring elements.



Charging member, process for its production, and electrophotographic apparatus

Tue, 31 Mar 2015 08:00:00 EDT

To provide a charging member that can not easily cause faulty cleaning on a photosensitive member while having a flexibility high enough to form a nip between it and the photosensitive member in a sufficient width. The charging member has an electro-conductive support and an elastic layer that is a surface layer, which elastic layer has at its surface a region having been cured by irradiation with electron rays, where this region supports spherical polyethylene particles in such a state that the spherical polyethylene particles are exposed to the surface of the elastic layer, thereby making the surface roughened.



Paper feed roller

Tue, 24 Mar 2015 08:00:00 EDT

The paper feed roller according to the present invention is made of a thermoplastic elastomer composition containing an ester thermoplastic elastomer urethane or an ether thermoplastic elastomer urethane (E) having microrubber hardness (type A) of not less than 60 and not more than 80 and a plasticizer (P) in a mass ratio E/P of 70/30 to 50/50.



Jig for holding thin cylindrical work

Tue, 10 Mar 2015 08:00:00 EDT

A holding jig (1, 2, 3) for a thin cylindrical work (W) includes a holding member (10, 10A, 10B) which holds the work (W) from an inner peripheral side and a diameter changing unit (25, 27) which changes a diameter of the holding member (10, 10A, 10B). The holding member (10, 10A, 10B) is made of metal and has a cylindrical shape and an elastically expandable or contractible diameter. The holding member (10, 10A, 10B) is configured with an outside diameter of the holding member (10, 10A, 10B) being held smaller than an inside diameter of the work (W) at the time of insertion into an inner periphery of the work (W) and being expanded after inserted into the inner periphery of the work (W) to hold the work (W) from an inner peripheral side of the work (W) with an outer peripheral surface in close contact with an entire inner peripheral surface of the work (W). The diameter changing unit (25, 27) applies at least one of an axial external force in a compressing direction or an axial external force in a tensile direction to both ends of the holding member (10. 10A, 10B) to change the diameter of the holding member (10, 10A, 10B).



Embossing roller and method for the manufacturing thereof

Tue, 10 Mar 2015 08:00:00 EDT

A method for obtaining an incision in an embossing roller using a hob to provide protuberances that are rounded on top and which improve the quality of the embossed material and reduce the wear of the mechanical components of the embossing units. The shape of the protuberances is obtained by machining the cylindrical surface of the roller placed between the tailstocks of the lathe using a hob that has teeth, the profile thereof being complementary to the cross-section of the protuberances. A portion of the hob with the teeth generates the grooves that define the side faces of the protuberances. The grooves between the teeth of the hob have a profile that is curvilinear in a cross-sectional view. With a double pass at two different inclinations of the surface of the roller, the protuberances of FIGS. 5 and 6 are generated.



Electrically conductive roller and image-forming device

Tue, 03 Mar 2015 08:00:00 EST

This invention provides an electrically conductive roller capable of forming an image without fogging even in a low humidity environment and an image-forming device. Specifically, the invention relates to an electrically conductive roller has an elastic layer formed on an outer circumferential surface of a shaft and a urethane coat layer formed on an outer circumferential surface of the elastic layer, wherein the urethane coat layer includes a urethane resin, and at least one ionic liquid selected from the group consisting of pyridinium ionic liquids and amine ionic liquids, in an amount from 1 to 20 parts by mass to 100 parts by mass of the urethane resin; and an image-forming device equipped with the electrically conductive roller.



Multi-layer, expandable sleeve for a printing press cylinder, particularly for flexographic printing

Tue, 24 Feb 2015 08:00:00 EST

The invention relates to a multi-layer, expandable sleeve (100) for a printing press cylinder, particularly for flexographic printing. The sleeve has an inner layer (110) with a hard surface inner jacket (112), which defines a longitudinal axis (A) and the cavity for mounting on the cylinder, and an outer layer (130) with a cylindrical outer jacket (132) for carrying an outer shell, a printing plate or a separate outer sleeve, in particular. An intermediate layer (120), manufactured in the form of a lightweight honeycomb having honeycomb cells oriented radially (B) to the longitudinal axis (A), is provided between the inner jacket (112) and the outer jacket (132). According to the invention, the intermediate layer (120) comprises at least one honeycomb layer (122-1, 122-2, 122-3, 122-4, 122-5) consisting of shaped cured fiber composite honeycomb made of fiber material embedded in a resin matrix. This intermediate layer (120) in itself makes the essential contribution to the inner jacket (112) being able to expand radially away from the longitudinal axis (A) for mounting the sleeve (100) on the cylinder.



Conductive roller and manufacturing method therefor

Tue, 03 Feb 2015 08:00:00 EST

Provided is a conductive roller including a shaft 1, and an elastic layer 2 and a surface layer 3 formed on the periphery of the shaft in the order mentioned. The elastic layer 2 is composed of a polyurethane foam containing a polyurethane resin and a waterproofing agent. By containing the waterproofing agent in the formulation of the polyurethane foam constituting the elastic layer 2, the environment-dependence of the roller resistance is improved, the resistance variance accompanied by change in the environment can be controlled, and pores formed on the surface of the elastic layer 2 are made fine, whereby the surface properties of the roller improve. Also provided is a method of manufacturing the above-mentioned conductive roller.



Unit for applying a label on a relative article

Tue, 20 Jan 2015 08:00:00 EST

A labelling unit movable along a given path for receiving labels and comprising a hollow receiving member having a lateral wall for receiving a relative label, extending around an axis transverse to the path and comprising a suction portion having through holes; a suction pneumatic device connected to the holes through the inside of the receiving member that can apply suction to retain a label on the outer surface of the lateral wall; and a hollow distributor member coaxially arranged inside the receiving member and provided with a number of angularly spaced opening sections having different heights parallel to the axis and correlated to the heights of different labels processed by the unit, and rotatable in at least two different angular positions, each corresponding to a selected opening section of the suction portion of the lateral wall such that only the holes facing the selected opening section are operative.



Electrically conductive roller

Tue, 13 Jan 2015 08:00:00 EST

An electrically conductive roller which may easily obtain a desired surface roughness, and which has good setting property without problems such as high cost and compression set is provided. An electrically conductive roller 10 comprises a shaft 1, an elastic layer 2 supported on the periphery of the shaft and one surface layer 3 formed on the peripheral surface of the elastic layer 2. The elastic layer 2 is composed of a urethane foam in which the degree of swelling is not more than 120% with respect to the solvent used in the formation of the surface layer 3. The urethane foam preferably contains, as a polyol component, a polyester polyol having a hydroxyl value of 200 to 400 and 3 or more functional groups.



Sheet feed rolling element for use in an electrophotographic device and mold for injection molding for producing the sheet feed rolling element

Tue, 13 Jan 2015 08:00:00 EST

A sheet feed rolling element for an electrophotographic device includes a roller portion and shoulders on both sides formed by curved chamfers. A parting line between the fixed mold plate and the movable mold plate of an injection mold is located at the boundary between one shoulder and the roller portion outer periphery, a step is provided at the boundary due to a difference between the opening diameter of the cavity portion defined by the fixed mold plate and the opening diameter of the cavity portion defined by the movable mold plate so the one shoulder has a smaller diameter than the outer peripheral surface, and a chamfer is provided adjacent to the one shoulder to absorb any difference in molding shrinkage rate due to a difference in molecular orientation of resin at the step, thereby preventing circumferential bulging on the outer periphery of the formed roller portion.



Roll for devices for the treatment of ribbon-shaped paper material and related device

Tue, 06 Jan 2015 08:00:00 EST

In one embodiment, a roll for devices for the treatment of ribbon-shaped paper material includes a central shaft, on which a coaxial tubular jacket is fitted, among which two oscillating and non-rotating connection organs are positioned, the central shaft of the roll having, at opposite ends, oscillating bearings housed in a supporting structure, wherein the central shaft and jacket are both rotating and are also made torsionally integral by means of at least one flexible organ capable of transmitting a torque. In another embodiment, a device for the treatment of ribbon-like paper material includes with a pair of rolls opposed as specified above, wherein a first roll has a tubular steel jacket and a second roll has a tubular rubber jacket.



Flat product composed of a metal material, in particular a steel material, use of such flat product and roller and process for producing such flat products

Tue, 30 Dec 2014 08:00:00 EST

With the invention a metallic flat product can be systematically made available with such a fine, stochastic or quasi-stochastic surface texture that after a typical automotive paint application it is only minimally perceptible, if at all, by the human eye. At the same time, in the case of a surface topography constituted according to the invention, the transition between the peak plateaus and the valleys takes place via steep flanks. In this way, it is achieved that the morphology of the sheet metal surface is practically independent of the actual depth of the valleys. As a result therefore, the morphology of the sheet metal surface of a metallic flat product according to the invention is also independent of the skin-pass rate, which is obtained when the fine metal texture is produced by skin-pass rolling.



Forged roll meeting the requirements of the cold rolling industry and a method for production of such a roll

Tue, 30 Dec 2014 08:00:00 EST

A forged roll for use, inter alia, in the cold rolling industry and a method of producing a forged roll as described. The roll has a steel composition, by weight, with 0.8 to less than 1% C, 0.2 to 0.5% Mn, 0.2 to 2.0% Si, 7.0 to 13.0% Cr, 0.6 to 1.6% Mo, more than 1.0 to 3.0% V, the remainder being Fe and impurities. The steel is tempered martensite with retained austenite at less than 5% per volume with eutectic carbides of less than 5% by volume, a hardness between 780-840 HV, and internal compressive stresses of between −300 to −500 MPa.



Quick change conveyor roll sleeve assembly and method

Tue, 23 Dec 2014 08:00:00 EST

A quick change conveyor roll assembly for metal or glass processing comprising an inner roll shaft having a rigid and elongated cylindrical surface supported and rotationally driven by an associate rotor mean. At least one removable spool having a cylindrical body with a first diameter, a hollow interior therethrough and a collar rigidly adapted at a first end, the collar having a second diameter whereby the second diameter is greater than the first diameter. At least one removable and replaceable insulated roll sleeve being slidably mounted over at least a portion of said removable spool and abutting said collar, the insulated roll sleeve including at least one layer of an insulation material and a securing means operably adjustable to hold said roll sleeve about said removable spool at a second end in a predetermined location on said inner roll shaft.



Application roller and manufacturing method of application roller

Tue, 23 Dec 2014 08:00:00 EST

A manufacturing method of an application roller that applies a coating solution onto a surface of a substrate, wherein the application roller includes a roller body that includes a large diameter portion and small diameter portions coaxially extended from both ends of the large diameter portion, the manufacturing method includes: overlaying a resin layer on at least an outer periphery of each of the small diameter portions; forming a masking portion on the outer periphery of each of the small diameter portions by processing an outer periphery of the resin layer; and forming an application groove portion on an outer periphery of the large diameter portion.



Roller cover support assembly with roller cover retention spring

Tue, 16 Dec 2014 08:00:00 EST

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.



Paint roller assembly

Tue, 16 Dec 2014 08:00:00 EST

A paint roller assembly has adjustable arms for accommodating various sizes of roller cages and accompanying roller skins. The assembly includes an elongated cage. An elongated roller skin has a main body, an open first side, and an open second side wherein the main body, the open first side, and the open second side define an interior space configured for receiving the cage wherein the cage is slidably insertable into the interior space of the roller skin. A pair of arms is selectively couplable to the cage. A head is selectively coupled to each of the arms. A first and second side of the head is selectively couplable to a second side of each of the arms. A slot extends from the first side and the second side of the head wherein the second side of each of the arms is selectively insertable into the slot.



Lubricant supplying method, supporting member and rotatable member unit

Tue, 09 Dec 2014 08:00:00 EST

A lubricant supplying method for supplying a lubricant to a sliding portion between a cylindrical rotatable member for use in an electrophotographic image forming apparatus and a supporting member for slidably supporting an inner peripheral surface at one end side of the rotatable member with respect to a rotational axis direction of the rotatable member, includes a step of engaging the supporting member, including a hollow portion and an opening which communicates with the hollow portion and is provided at a position in which the opening opposes the sliding portion, with the rotatable member at the one end side; and a step of supplying the lubricant from the hollow portion toward the sliding portion through the opening.



Cylindrical shaft, transport roller, transport unit, and printing apparatus

Tue, 09 Dec 2014 08:00:00 EST

A cylindrical shaft is provided of which a pair of ends are formed in a cylindrical shape by a press work so as to form a joining portion therebetween. Here, the joining portion includes: a central linear section which is provided on a center portion in an axis direction of the cylindrical shaft and is formed in a linear shape to be parallel to the axis direction of the cylindrical shaft; and a folded section which includes a plurality of intersections which are provided on both ends of the center portion and are disposed so as to be extended in a direction perpendicular to the axis direction of the cylindrical shaft, and a connection linear section which connects ends of a pair of the adjacent intersections.



Sheet conveying roller and rubber composition

Tue, 02 Dec 2014 08:00:00 EST

The present invention provides a sheet conveying roller which requires a smaller number of ingredients than a prior art sheet conveying roller, has an excellent weather resistance, is less liable to suffer from reduction in friction coefficient attributable to accumulation of paper dust and sheet conveying failure attributable to the reduction in friction coefficient, and ensures proper sheet conveyance for a longer period of time. The invention further provides a rubber composition for the sheet conveying roller. The rubber composition comprises an ethylene-propylene-diene rubber and an epoxylated natural rubber as a rubber component. In the rubber composition, the epoxylated natural rubber is present in a proportion of 10 mass % to 90 mass % based on the overall amount of the rubber component including the two rubbers. The sheet conveying roller includes a roller body formed from the rubber composition.



Conductive rubber member

Tue, 02 Dec 2014 08:00:00 EST

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.



Cylindrical shaft, transport roller, transport unit, and printing apparatus

Tue, 02 Dec 2014 08:00:00 EST

A cylindrical shaft is provided of which a pair of ends are formed in a cylindrical shape by a press work so as to form a joining portion therebetween. Here, the joining portion includes: a central linear section which is provided on a center portion in an axis direction of the cylindrical shaft and is formed in a linear shape to be parallel to the axis direction of the cylindrical shaft; and a folded section which includes a plurality of intersections which are provided on both ends of the center portion and are disposed so as to be extended in a direction perpendicular to the axis direction of the cylindrical shaft, and a connection linear section which connects ends of a pair of the adjacent intersections. In addition, the connection linear section is constituted by a first linear section which connects ends on one side of the pair of the intersections and a second linear section which connects ends on the other side of the pair of the intersections and formed shorter than the first linear section. In addition, a distance between the pair of the ends of the center portion is longer than a distance between the pair of the ends of the second linear section.



Apparatus and method utilizing a magnetic force to apply a force to a material

Tue, 18 Nov 2014 08:00:00 EST

A roller comprising a magnet is used to apply a force to a material between the magnet of the roller and a magnetically susceptible surface. A handle of the roller may be moved by a user to roll the roller over the material to apply the force along a length of the material.



Manufacturing method of roller for manufacturing patterned retarder film

Tue, 18 Nov 2014 08:00:00 EST

A method for producing a roller used for manufacturing a retarder film is provided. The method includes providing the roller having a roller surface; providing an embossing tool having an embossing end and embossing the roller surface with the embossing tool. The embossing end has a plurality of first microgroove structures and second microgroove structures. The first and second micro-groove structures are both parallel structures. Each one of the first microgroove structures is symmetric to each one of the second microgroove structures with respect to a symmetry line. An included angle of the symmetry line between each first micro-groove structure and that between each second micro-groove structure are 45±8 degrees.



Methods of manufacturing paint roller covers from a tubular fabric sleeve

Tue, 11 Nov 2014 08:00:00 EST

A method of manufacturing paint roller covers is disclosed in which the paint roller covers are manufactured from a seamless segment of tubular paint roller cover fabric that is placed onto a cylindrical forming tube having a segment of bonding material temporarily secured on its outer surface under the segment of tubular paint roller cover fabric. The cylindrical forming tube is placed on a heated mandrel to apply heat thereto to cause the bonding material to bond to the interior of the segment of tubular paint roller cover fabric. The cylindrical forming tube is removed from the mandrel and cooled, and the segment of tubular paint roller cover fabric becomes secured to the bonding material to produce a semi-rigid paint roller cover segment. The semi-rigid paint roller cover segment may be finished into paint roller covers.



Semiconductive roller, charging roller and electrophotographic apparatus

Tue, 11 Nov 2014 08:00:00 EST

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.



Roller and method of making roller

Tue, 11 Nov 2014 08:00:00 EST

A roller for producing optical films is disclosed. The roller includes a cylindrical main body and a micro-structured layer surrounding a circumferential surface of the main body. The microstructure layer includes a number of microstructures on its surface away from the main body. The microstructure layer is made from ethylene tetrafluoroethylene.



Disc member base material for a disc roll

Tue, 04 Nov 2014 08:00:00 EST

A disc roll includes a plurality of annular disc members each defining a hole and having a peripheral surface; and a rotary shaft fitted into the holes of the annular disc members by insertion, whereby the peripheral surfaces of the disc members serve as a conveying surface of the disc roll. The disc members include an inorganic fiber, mica and a clay having a content of particle components that have a particle size of 5 μm or larger of not higher than 30% by weight based on the weight of the clay.



Developing member, process cartridge and electrophotographic apparatus

Tue, 28 Oct 2014 08:00:00 EDT

A high quality developing member that is excellent in deformation recovery property under a high temperature and that also satisfies filming resistance under a low temperature is provided. The developing member of the present invention includes a mandrel, an elastic layer formed on the outer periphery surface of the mandrel, and a surface layer covering the outer periphery surface of the elastic layer, wherein the surface layer contains a first resin and a second resin, the first resin has a particular structure between adjacent two urethane linkages, and the second resin is a resin having a particular structure and having a glass transition point Tg of 20° C. or higher and 120° C. or lower.



Charging member, process cartridge, and electrophotographic apparatus

Tue, 28 Oct 2014 08:00:00 EDT

Provided are a charging member capable of maintaining excellent wear resistance even after repeated use, and a process cartridge and an electrophotographic apparatus each having the charging member. The charging member is characterized in that its surface layer has a polysiloxane to which a silsesquioxane is bonded.



Roller and conveying device with the same

Tue, 28 Oct 2014 08:00:00 EDT

The present disclosure provides a roller and a conveying device. The roller includes an inner circle, an outer circle, and an inflatable cushion arranged between the inner circle and the outer circle with the volume thereof changing as air charge inflated thereinto changes. by adjusting the air charge of the inflatable cushion, the outer diameter of the roller is increased as the air charge inflated into the inflatable cushion increases, at the same time, the conveyor surrounding the exterior of the roller is tightened to increase the tension degree of the conveyor without disassembling other mechanisms of the conveying device, which is simply operated to be capable of saving labors and time.



Development roll for electrophotographic equipment

Tue, 21 Oct 2014 08:00:00 EDT

A development roll for electrophotographic equipment includes a shaft body and a rubber elastic layer disposed on the outer circumference of the shaft body. The rubber elastic layer is composed of a crosslinked body of a composition containing a liquid or millable silicone rubber, a crosslinking agent, an electronically conductive agent, and an ionic liquid. The composition contains the ionic liquid in the amount in the range of 0.1 to 5.1 parts by mass relative to 100 parts by mass of the total amount of the liquid or millable silicone rubber and the crosslinking agent.



Papermaking additives for roll release improvement

Tue, 21 Oct 2014 08:00:00 EDT

Compositions and methods for reduction in adhesion between wet paper web and roll surfaces in papermaking process are disclosed. The method is particularly useful for improvements in press section roll release.



Device for correcting an edge portion of a sheet material and electrophotographic image forming apparatus

Tue, 21 Oct 2014 08:00:00 EDT

Disclosed is a device for correcting an edge portion of a sheet material, including a first roller provided in a sheet material conveying path, a second roller including a center shaft and side rollers provided at both sides thereof, the center shaft having an outer diameter less than a minimum diameter of the side rollers, each of the side rollers having an outer diameter increasing from a center side to an outer side thereof, and a pressing unit configured to cause the second roller to bend toward the first roller to press the side rollers of the second roller against the first roller.



Methods of manufacturing paint roller covers from a tubular fabric sleeve

Tue, 14 Oct 2014 08:00:00 EDT

A method of manufacturing paint roller covers is disclosed in which the paint roller covers are manufactured from a seamless, tubular knitted pile fabric sleeve that is installed onto a core member. To facilitate the manufacture of the paint roller covers, the outside of the core member is provided with an adhesive bonding material on the exterior surface thereof that has a relatively non-tacky outer surface. The knitted pile fabric sleeve is installed onto the exterior surface of the core member over the adhesive bonding material. The adhesive bonding material is then rendered tacky, whereupon the knitted pile fabric sleeve becomes adhesively secured by the adhesive bonding material to the exterior surface of the core member. The pile fabric covered core member may be finished into paint roller covers by combing and shearing the pile fabric to a desired length, beveling the edges of the paint roller covers, and vacuuming stray fibers from the paint roller covers.



Pickup roller and image forming apparatus having the same

Tue, 14 Oct 2014 08:00:00 EDT

A pickup roller includes a supporting layer and a pickup layer, which includes a base surrounding the outer perimeter of the supporting layer and a plurality of particles which are distributed throughout the base and have a different hardness than a hardness of the base.