Abstract:
A printer includes an inkjet printhead having a plurality of nozzles. The nozzles include a thermal actuator and drive circuitry for operating the thermal actuator. The drive circuitry and actuator overlie a common area of the support substrate.
Abstract:
An ink jet print head chip that includes a substrate that defines a plurality of ink inlet channels. A plurality of nozzle chamber structures is on the substrate to define nozzle chambers in fluid communication with the ink inlet channels and an ink ejection nozzle in fluid communication with each nozzle chamber. Drive transistor circuitry is positioned on the substrate and is connectable to data and power supplies. A plurality of elongate actuators are each fast with the substrate at one end to receive actuating signals from the drive transistor circuitry to be displaceable towards and away from the substrate. A plurality of ink ejection members is fast with respective actuators at opposite ends. Each ink ejection member is positioned in a respective nozzle chamber such that displacement of the respective actuators results in the ejection of a drop of ink from the ink ejection nozzle. The transistor circuitry includes traces that are interposed between each actuator and the substrate and oriented substantially orthogonally to a longitudinal axis of each respective actuator.
Abstract:
Method of making a mask assembly by providing a heat resistance mask substrate having an exposed surface with a surface smoothness less than 2000 micro inches, uniformly spraying a thermoset epoxy organic coating onto such exposed surface in one or more layers to provide a coating having (e.g., a thickness equal to or less than about 0.005 inches), a smoothness characterized by an average profilometer reading (Ra) of no greater than 1.5 micrometers, said coating being devoid of pores that exceed about 0003 inch in size, and flame polishing all or a portion of such coating to effect a surface finish of about 1.0 micrometers. A mask assembly which is useful in masking areas from thermal spray particles, comprising a heat resistance substrate presenting an exposed grit blasted surface having a smoothness of less than 2000, and a thin thermoset epoxy coating bonded to said exposed surface and having a surface smoothness characterized by an average profilometer reading (Ra) no greater than 1.5.
Abstract:
A method of applying a smooth thin waterproof coating on engineered particleboards including oriented strand boards, thereby permitting the use of such boards for applications wherein the boards are exposed to moisture, including, for example, foundation forms, roof sheathing, basement walls, etc. The method of this invention includes applying a thin liquid cementitious coating on a surface of an engineered particleboard having a moisture content preferably less than three percent, wherein the cementitious coating fills the interstices between the particles and coats the surface. The cementitious coating is then dried and the surface is abraded to receive a thin liquid curable polyurethane coating over the cementitious coating. Finally, the exposed surface of the polyurethane coating is heated to remove surface imperfections and cure the polyurethane coating. In the preferred method, the liquid polyurethane coating is heated and cured by applying an open flame to the surface of the liquid polyurethane coating which removes surface imperfections, such as bubbles, and simultaneously cures the coating.
Abstract:
A method of modifying at least part of the surface of a polymer or polymer matrix composite material including: (i) oxidising at least part of the surface of the polymer or polymer matrix material and (ii) subsequently treating the oxidised surface with an organofunctional coupling agent and/or chelating agent, simultaneously with a static and/or a high frequency alternating physical field.
Abstract:
A thermoplastic container or packaging material is given low oxygen permeability by coating with a crosslinked acrylate layer and a layer of oxygen barrier material deposited over the acrylate layer. Another acrylate layer may be deposited over the oxygen barrier. The oxygen barrier is selected from the group consisting of silicon oxide, aluminum oxide and metal. The acrylate layer may be formed from a photopolymerizable polyfunctional acrylate that is sufficiently low viscosity to be sprayed on the substrate or applied by dipping. Alternatively, the acrylate layer is a polymerization product of an acrylate monomer which is evaporated in a vacuum, condensed on the substrate and polymerized by irradiation by ultraviolet or an electron beam. The surface of the thermoplastic substrate is prepared for deposition of the acrylate by either flame treating the surface of the substrate to heat it above its melting point without deforming the substrate to thereby smooth the surface, or by plasma treating the surface for enhancing adhesion of the acrylate. Chilling the substrate enhances deposition efficiency.
Abstract:
Disclosed is a composite metal sheet to be produced by chemically treating the surface of a metal substrate, coating and drying an organic resin-based composition thereon to form a undercoat layer, then coating thereon a two-layered resin interlayer composed of an adhesive layer of a modified polyolefin resin and a polyolefin resin layer at a thickness of from 50 to 300 .mu.m, then modifying the surface of said polyolefin resin layer by flame treatment or corona discharging treatment thereby forming functional groups in an amount of from 0.05 to 0.30 in terms of O/C representing the ratio of the amount of oxygens in the functional groups to the amount of carbons on the surface, and finally coating and drying an urethane-curing polyester resin paint or an urethane-curing fluorine resin paint at a thickness of from 8 to 35 .mu.m to form a top coat layer. The composite metal sheet has excellent corrosion resistance, weather resistance and formability.
Abstract:
A new method for the manufacture of glass films on substrates involves the flame reaction of an aerosol comprised of droplets of a solution containing all the precursors for the glass. A solution containing the precursors for all oxide components is atomized, and the resulting droplets are reacted in a flame to form spherical glass particles which are deposited on a heated substrate. By moving the substrate through the flame, a homogeneous deposit is achieved. Subsequent heat treatment in a furnace sinters the porous particle layer into a clear glass. The method has been successfully employed for the formation of sodium borosilicate glass films on silicon substrates and rare earth-doped multicomponent glass films for active devices.
Abstract:
A method for forming a deposition film, comprising decomposing a first compound containing germanium and halogen in an activation chamber by applying an energy to form an active species; separately introducing, into a film-forming chamber for forming a deposition film on a substrate, a second compound containing silicon and hydrogen and the active species, which is capable of chemical interaction with the second compound containing silicon and hydrogen; and applying to a mixture of the second compound and the active species at least one excitation energy selected from optical, thermal and discharge energies to excite the second compound in the mixture, thereby facilitating the formation of a deposition film on the substrate.
Abstract:
A cold process for laying a textured or polished coat of bronze, copper, brass, pewter or other metallic substance over a mineral or organic surface comprises the step of mixing a sintering metal powder with a polyester resin and a ketonic catalyst for forming a spreadable, moldable or sprayable paste that hardens to a coat having essentially the mechanical and chemical characteristics of the selected metallic substance, but exhibiting no electrical conductivity.