Abstract: An automated inspection station comprises a pair of rotating rollers for supporting a collected group of pellets. A pusher drops in behind the group to urge the entire group forward. The rotating rollers cause the entire group of pellets to spin in unison as the pellets pass through an optical inspection station. The optical inspection station comprises a light source, diverging and collimating lenses to illuminate each rotating pellet in turn. Signals are generated by at least two arrays of photodiodes in response to light reflected from the surface of the pellets. Circuitry normalizes the signals of the respective diodes for variations unrelated to pellet surface features. The signals are analyzed to ascertain conformance of each pellet to length, cylindricality diameter and surface reflectivity requirements. A pellet sorter diverts unacceptable pellets from the path, while the acceptable pellets are transported to a collection station.

Abstract: There is disclosed a fluid comprising a mixture of about 5 percent to about 40 percent by volume of a halogenated benzene and about 60 percent to about 95 percent by volume of an alkyl branched chain phthalate ester, said fluid having a dielectric constant greater than the dielectric constant of either of the halogenated benzene or the alkyl branched chain phthalate ester. The dielectric constant of an alkyl branched chain phthalate ester having a dielectric constant above about 4.0 is increased by mixing a halogenated benzene having a dielectric constant above about 4.0 with the alkyl branched chain phthalate ester whereby the measured dielectric constant of the alkyl branched chain phthalate ester having the halogenated benzene therein, is at least 0.25 higher than the dielectric constant of either the halogenated benzene or the alkyl branched chain phthalate ester. The preferred halogenated benzene is trichlorobenzene, and the preferred alkyl branched chain phthalate ester is di-2-ethylhexylphthalate.

Abstract: The bond between a hard wear resistant coating of Al.sub.2 O.sub.3 and a cemented carbide substrate is greatly improved by means of a more effective interlayer of TiO. The TiO layer is provided by means of a reduction process from other titanium oxides such as TiO.sub.2.

Abstract: A two-component room temperature vulcanizable polysiloxane composition curable in the presence of a heat-activated catalyst is disclosed. The working life of a condensation curable organopolysiloxane containing terminal silicon-bonded hydroxy groups in a first component is extended by using a metallic salt of an organic carboxylic acid catalyst in a second component by providing in combination with the metallic salt of an organic carboxylic acid catalyst, a solid, inert barrier material capable of melting at an elevated temperature, whereby the catalyst is activated when heat applied thereto, melts the solid barrier material. A cross-linking agent and optionally, a filler, are used in the components. In one embodiment, the catalyst is a tin carboxylate used as a core material and the solid, inert barrier material is calcium stearate used as a wall material to encapsulate the catalyst material.

Abstract: Improved ceramic compositions useful for cutting tools and the like are described. They are composed of an essentially homogeneous admixture of sintered powders of an aluminum oxide base material with other refractories including zirconium oxide, titanium oxide, hafnium oxide, titanium nitride, zirconium nitride, and tungsten or molybdenum carbide. In addition to their common and improved properties of hardness and strength, many of these compositions may be made by simple cold-pressing and sintering procedures. This avoids the known drawbacks of conventional hot press production.

Abstract: A cutting insert includes a planar body member formed unitary with peripheral ledges of smaller width than the body member, with the ledges being configured and aligned relative to the body member to achieve desired rake angles, both axial and radial as well as the clearance angle desired of the cutting geometry. In operation, each elongated ledge defines the cutting edge of the cutting insert and during operation of the cutting insert, the ledge is consumed and thus generates a fresh edge behind it along the entire length of the ledge such that the cutting process may be maintained continuous until the entire length of the ledge is consumed. The cutting insert may then be indexed to the next ledge cutting edge.

Abstract: Polypropylene glycol dielectric fluids are used to impregnate electrical capacitors and particularly metallized capacitors for improved performance.

Abstract: Polypropylene glycol dielectric fluids are used to impregnate electrical capacitors and particularly metallized capacitors for improved performance.

Abstract: Electrically charged particulates in a gas stream are filtered from the gas stream by a filter medium comprising a porous cake composed of electrically charged particulates previously drawn from the gas stream and collected on a foraminous support structure, where the apertures of the foraminous support structure are larger than the average size of the particulates to be filtered from the gas stream by more than an order of magnitude.

Abstract: Acyloxysilanes are prepared by reacting a chlorosilane with an aliphatic carboxylic acid in a column at an elevated temperature wherein the aliphatic carboxylic acid in the vapor phase reacts with the chlorosilane in the column. The improvement comprises introducing the carboxylic acid into the column in a plurality of feed streams preferably at such a rate that the carboxylic acid exceeds 1.3 moles per gram atom of silicon-bonded chlorine in the column and removing low boiling reaction by-products and hydrogen chloride gas from the top of the column while collecting the acyloxysilane product dissolved in the aliphatic carboxylic acid at the bottom of the column. At least one feed stream of aliphatic carboxylic acid must be located above the chlorosilane feed stream.

Abstract: A light-control device includes a liquid crystal material sandwiched between a pair of planar, light-transmitting members. The liquid crystal material particularly includes an asymmetrical azine compound having the general formula: ##STR1## wherein R.sub.1 and R.sub.2 are different para-substituents selected from the group comprising cyano, halogen, alkyl, and substituted alkyl radicals in which the alkyl radical has from one to nine carbon atoms, and wherein X and Y are selected from the group comprising hydrogen and methyl radicals.

Abstract: A method of depositing and affixing a layer of a copolymer of perfluoroalkyl perfluorovinyl ether and tetrafluoroethylene upon a metal surface and the article prepared thereby, is disclosed. A flame sprayed metal surface having an optional fluoropolymer primer thereon is powder coated with the copolymer of perfluoroalkyl perfluorovinyl ether and tetrafluoroethylene and the powder is fused thereon. An improved long life fuser member for use in a fusing apparatus for fixing toner images to copy sheets by the application of heat and pressure is described.

Abstract: A composition is described for use on the surface of separating members or devices used in separating superposed sheets. Good sheet separation is obtained without delamination of the sheets when microcellular elastomeric materials having a hardness of at least 25 durometer are used as the surface material of the sheet separating devices. The sheet separating devices having the described surface material, have utility as retarding rolls and abutment members in sheet feeders, such as in xerographic apparatus.

Abstract: Disclosed is a method of treating a paper sheet comprised of a mat of paper making fibers having a uniform coating of starch or modified starch on its surface to improve its performance in electrostatographic copiers. The treatment involves exposing such a sheet having a smooth surface to a direct stream of corona ions. This treatment results in improved adhesion of toner to the sheet when it is used as the receiving member in an electrostatographic copier.

Abstract: Fuser members coated with a release layer of silicone rubber are treated with a solvent to remove low molecular weight siloxanes, polysiloxanes and other impurities from the silicone rubber. The solvent must be one which removes or extracts the low molecular weight siloxanes, polysiloxanes and other impurities without dissolving or otherwise adversely effecting the integrity of the silicone rubber layer coated upon a base member. Generally solvent extraction is continued until the components in the cured silicone rubber which interfer with the release properties of the rubber in releasing toner from the fuser member surface, are depleted to concentration where they do not inhibit release of the toner.

Abstract: A process for forming capsules comprising:(i) forming a solution of wall material and core material in a solvent;(ii) admixing said solution with an immiscible liquid to form a dispersion wherein said solution is the dispersed phase and the immiscible liquid is the continuous phase;(iii) altering the solubility characteristics of the solvent for said solution to effect sequential phase separation of said core and wall materials, respectively, thereby forming capsules of core material encapsulated with wall material; and(iv) recovering said capsules.

Abstract: Polymeric release agents having functional groups such as carboxy, hydroxy, epoxy, amino, isocyanate, thioether or mercapto groups are applied to a heated fuser member in an electrostatic reproducing apparatus to form thereon a thermally stable, renewable, self-cleaning layer having excellent toner release properties for conventional electroscopic thermoplastic resin toners. The functional polymeric fluids interact with the fuser member in such a manner as to form a thin, thermally stable interfacial barrier at the surface of the fuser member while leaving an outer film or layer of unreacted release fluid. The interfacial barrier is strongly attached to the fuser member surface and prevents electroscopic thermoplastic resin toner material from contacting the outer surface of the fuser member. The material on the surface of the fuser member is of minimal thickness and thereby represents a minimal thermal barrier.

Abstract: Polyarylsiloxanes are used on metal fusing devices in photocopiers to fix particulate thermoplastic toner to a substrate while the toner is in a fused state. The polyarylsiloxanes can be continuously applied in minimal thicknesses on the fusing device to form a thermally stable, renewable, self-cleaning layer having excellent toner release properties. A preferred polyarylsiloxane is polyphenylmethyl dimethyl siloxane.

Abstract: A pressure roll for use in a roll fuser for fixing toner images to copy sheets by the application of heat and pressure, is described. The roll is characterized by a rigid core covered with a relatively thick layer of organic rubber with a relatively thinner sleeve or layer of material acting as an air barrier to the organic rubber to prevent oxidative degradation. The organic rubbers are characterized by small compression deflection decreases even after exposure to high temperatures, under pressure for prolonged periods of time.

Abstract: A contact fuser assembly and method for preventing toner offset on a heated fuser member in an electrostatic reproducing apparatus includes a base member coated with a solid, abrasion resistant material such as polyimide, poly (amide-imides), poly (imide-esters), polysulfone and aromatic polyamides. The fuser member is coated with a thin layer of polysiloxane fluid containing low molecular weight fluorocarbon. Toner offset on the heated fuser member is prevented by applying the polysiloxane fluid containing fluorocarbon to the solid, abrasion resistant surface of the fuser member.