Abstract: A heat and pressure roll fusing apparatus for fixing toner images to copy substrates, the toner comprising a thermoplastic resin. The apparatus includes an internally heated, fuser roll cooperating with a backup or pressure roll to form a nip through which the copy substrates pass with the images contacting the heated roll. The heated fuser roll is characterized by an outer layer or surface which by way of example is fabricated from a silicone rubber, Viton or metal clad with a low surface energy material such as Teflon to which a low viscosity polymeric release fluid is applied. Liquid release fluid is contained in a sump from which it is applied either directly or indirectly to the fuser roll. When release agent is applied directly to the fuser roll an air seal must be used on the surface of the fuser roll to insure that the release material contacts the fuser roll. Alternatively, when the release fluid is applied indirectly as by, for example, a metering roll, then the air seal contacts the metering roll.

Abstract: Apparatus for thermal oxidation of silicon wafers at high pressures of a type wherein a reactor of a refractory material is disposed within a pressure vessel, and wherein a margin of a wafer portal of the reactor and a closure of the refractory material have congruent surfaces enabling a hermetic seal to be effected, an improvement is disclosed wherein the closure is mounted within a pressure-vessel head used to close an access portal of the pressure vessel by means of gimbals, whereby a hermetic seal can be effected at said surfaces despite misalignments.

Abstract: Copper staining of a borosilicate glass article is described which utilizes a single heating step to produce red coloration in the stained glass. The method utilizes a particular liquid slurry to coat the surface of the glass article being treated which generates copper halide vapors during a single heating step in a controlled atmosphere to produce the desired final red color. Atmosphere control is exercised with non-reducing atmosphere conditions being maintained until the alkali metal ions in the glass surface have been replaced with copper ions and which is followed by conversion to reducing atmosphere conditions to convert the substituted copper ions to the metallic state.

Abstract: An electrostatographic developer mixture comprising finely divided toner particles, and steel bead carriers whose surfaces are carburized, or nitrided or carburized-nitrided.

Abstract: A process for chemical vapor deposition of ruthenium on heat resistant substrates employing ruthenium 1, 3 dione compounds as volatile sources and causing the volatile material to impact on a heated receiving substrate in random fashion in a quiescent, low-pressure atmosphere.

Abstract: Utilizing a spray painting shield comprising a large, flat flexible masking blade attached to an elongated handle. Placing the front edge of the shield along a corner edge formed by a surface to be painted and an adjacent surface. Pushing said handle to flex said blade to about 40.degree.-80.degree. with respect to said edge and adjacent surface.

Abstract: A development process for an electrophotographic duplicator using magnetic toner and a photosensitive material selected from the group consisting of selenium, organic semiconductor, and cadmium sulfide. The magnetic toner is transferred in a maximum thickness of 1.5 mm onto a cylindrical non-magnetic sleeve enclosing a magnetic roll. The magnetic force of the roll on the sleeve is in the range of from 300 to 1000 gauss and the toner comprises magnetite in the range of 40 to 70 percent by volume and has a volume specific resistivity higher than 10.sup.7 ohm-cm and a granulometric measure of less than 30 .mu.m. A surface potential is applied in the range of from 300 to 1200 volts on the photosensitive material formed on the surface of a rotatable drum-shaped member. The magnetic toner is continuously conveyed to a development section of the photosensitive material during rotation of the member for brushing the toner in contact with the photosensitive material.

Abstract: A device for spincoating an ultra-thin iron powder film on a disk for magnetic recording. Ultra-thin films are utilized on magnetic disks in view of a high density recording that may be achieved on such devices. The invention develops an iron powder particulate composition which is pre-sheared to a particular consistency within a spin chamber which is compartmented by perforated vanes, disposed on a common axis with and above the magnetic disk, and is selectively coupled to the drive shaft of the disk spinner. Magnetic means are actuable to raise the bell-type cover of the spin chamber whereby to discharge coating material onto the spinning disk. Means decouple the chamber from the drive shaft and vary the spin rate of said shaft to effect the desired thinness of coating.

Abstract: A paint guide has an inverted U-shaped frame with a flexible paint shield terminating in a straight edge which is adapted to be spaced a predetermined distance from a window frame to provide for a strip of weatherproofing paint on the glass adjacent the frame. An L-shaped bracket is adjustably mounted on each of the ends of the frame and is pivotally slidably mounted on an elongated supporting arm by a link and slidable pivot pin arrangement. A coil leaf spring extends between the bracket and arm and biases the bracket away from the arm to move the paint shield edge out of engagement with the glass. A tab is provided on each of the arms and is located rearwardly of and beneath the fronts of the arms to support the paint guide on a pane of glass when the arm fronts are placed in abutting engagement with the frame.

Abstract: Apparatus and a method for the selective conditioning, wetting and coating of particles with a selective wetting agent. The apparatus includes a horizontally extending surface capable of vibration which vibration induces uniform translatory movement along the surface to particles upon the surface. A vertically extending barrier is on the surface and extends across the surface and at right angle to the direction of movement of particles upon the surface. A means for spraying the selective wetting agent onto the particles as they move along the surface and before they reach the barrier is provided. Means for removing excess wetting agent are provided on the surface along the direction of movement of the particles after the barrier. A pool of the selective wetting agent forms behind the barrier upon the surface.

Abstract: Means for cleaning and waxing fishing line includes a container having a general longitudinally slot in the periphery thereof and a porous applicator mass, impregnated with cleaning and waxing compound. Line is run through the slot, in contact with the applicator to effect said cleaning and waxing. Means rotatably adjust said applicator to present a fresh applicator surfact the slot opening.

Abstract: A paint shield, formed of a relatively rigid resilient material, is substantially pentagon-shaped and has a handle portion opposite the vertex of two adjoining sides and is folded to about 140.degree. on a line from the center of the handle to said vertex. When painting in a corner, the shield is placed on a generally planar surface with the vertex in said corner whereupon application of pressure, the fold angle and the planar angle formed by said sides expand until the side edges engage the corner structure to effect the shielding function.

Abstract: A guard ring for processing a wafer of semiconductor material by thermal gradient zone melting has a beveled internal wall surface for supporting the wafer therein. The thickness of the guard ring is about twice the thickness of the wafer.

Abstract: Powder is continuously circulated through a conduit loop, which has an enlarged section to increase powder turbulence, whereby the powder acquires a substantial electrostatic charge. Communication is then established with a second conduit section in which an article to be coated has been positioned to effect coating by the charged powder.

Abstract: A magnetic brush having an independently rotatable non-magnetic core is disposed in the mouth of a toner supply tank. An upper tank wall and a top portion of the sleeve form a delivery gap and a bottommost tank wall section with the sleeve bottom forms a toner return gap which is disposed in a vertical plane whereby unused toner enters the supply tank in a horizontal direction.

Abstract: Apparatus for evenly and uniformly depositing particulate suspended in a gas on at least one surface, and in at least one direction, of a substrate. The apparatus has an exit slit (13) and a passage for communication of product including a main conduit (1), a plurality of secondary conduits (2) which are of equal length and internal diameter and a primary slit (6) communicating with a chamber (7). The slits are coextensive in length and the secondary conduits, of equal length, connect along the primary slit at regular spacing so that product is delivered uniformly to said exit slit.

Abstract: A variable temperature method for the preparation of single and multiple taxial layers of single-phase (e.g., face-centered cubic), ternary lead chalcogenide alloys (e.g., lead cadmium sulfide, [Pb.sub.1-w Cd.sub.w ].sub.a [S].sub.1-a wherein w varies between zero and fifteen hundredths, inclusive, and a=0.500.+-.0.003), deposited upon substrates of barium fluoride, BaF.sub.2, maintained in near thermodynamic equilibrium with concurrently sublimated lead alloy and chalcogenide sources. During preparation, the temperature of the substrate is varied, thereby providing an epilayer with graded composition and predetermined electrical and optical properties along the direction of growth. This growth technique can be used to produce infrared lenses, narrowband detectors, and double heterojunction lasers.

Abstract: A device for painting by electrostatic powder spraying wherein a passage for triboelectrifying powder particles is formed in an electrically conductive housing and is surrounded by an electric insulator layer of a synthetic macromolecular material, such as nylon or fluorocarbon resin, containing powder of an electrically conductive material, such as copper, aluminum or carbon. As the electrostatic powder moves through the passage, it frictionally engages the insulator layer and causes an electric charge on the surface of the electric insulator, due to the triboelectrification movement in the electric insulator, and a current flows to the powder. Therefore, powder particles can be continuously triboelectrified without suppling any voltage or with supplying a very low voltage for forming an electric field.

Abstract: A method for constructing a capacitive transducer by depositing a uniform glass insulating ring. The capacitive transducer consists of a circular base substrate and a circular diaphragm, each supporting one of two capacitor electrode and separated by a uniform glass insulating ring which determines a uniform air gap between the capacitor electrodes. Pressure changes cause the diaphragm to flex and thereby produce capacitance changes in relation to the pressure being sensed. The thickness of the glass insulating ring is critical to the production of an accurate pressure transducer and is produced in the following manner. A first glass insulating ring layer is screen printed onto a substrate through a mask having a pattern therein. Subsequently, the relative rotational orientation between the mask pattern and the first screened layer is altered by a predetermined number of degrees and a second screened layer is deposited on top of the first layer.

Abstract: Apparatus for suspending particles in a fluidized bed within a coating chamber where the particles are coated with a substance contained in a reactant gas introduced into the chamber by means of a centrally arranged nozzle extending upwardly from the coating chamber floor. Levitating gas for suspending the particles in the fluidized bed is introduced into the chamber from around the centrally arranged nozzle and generally parallel with the chamber base to promote particle circulation through the fluidized bed and minimize deposition within the chamber in one species of the apparatus, the nozzle is supported upon a movable probe which forms a closure for an opening in the chamber base through which coated particles are unloaded.