Abstract:
An inkjet printhead IC is fabricated using a wafer substrate that defines a plurality of ink inlet channels. A plurality of nozzle structures fabricated on the substrate to define nozzle chambers are in fluid communication with the ink inlet channels and an ink ejection nozzle in fluid communication with each nozzle chamber. Each nozzle structure has a chamber, an ejection nozzle in fluid communication with the chamber, and an ejection member for acting on ink within the chamber. A plurality of actuators attached to the substrate move each of the ejection members respectively, the movement being substantially parallel to the ink inlet flow direction; such that, ink is ejected through the ejection nozzle upon activation of the actuator corresponding to that nozzle structure.
Abstract:
Coatings, particularly thin films, of polymeric material are produced in accordance with the invention by applying a finely divided aerosol of polymer solution to a substrate and substantially simultaneously applying an energy source to the applied solution to apply the solution. In cases where the polymer is cross-linking, the energy source assists in cross-linking of the polymer. The preferred energy source is a flame that may optionally or desirably deposit material along with the polymer spray. One particular aspect of the invention is directed to production of polyimide films. In accordance with another aspect of the invention, the co-deposition process is used to provide thin polysiloxane coatings on glass and other substrates.
Abstract:
An ink jet printhead chip includes a substrate that defines a plurality of ink inlet channels. A plurality of nozzles is positioned on the substrate and is in fluid communication with the ink inlet channels. A plurality of elongate micro-electromechanical actuators is fast with the substrate at one end, an opposed end being displaceable relative to the substrate on receipt of an electrical drive signal. Each opposed end is operative on a respective nozzle to eject ink from the nozzle. Control circuitry and drive circuitry for each actuator is positioned on the substrate and interposed between the actuator and the substrate.
Abstract:
A nozzle arrangement 1 for use in an ink jet print head, the nozzle arrangement 1 comprising a substrate, a nozzle chamber 2 positioned at least partially on the substrate, a channel 3, in fluid communication with the nozzle chamber 2, through the substrate, and, an actuator 6 including an actuator arm 8 and a paddle 7, the paddle 7 positioned within the nozzle chamber 2 and at least partially overlying the channel 3.
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:
A coating system comprises a basecoat of an thermosetting asphalt extended, chemically cross linkednullurethane/epoxy hybrid basecoat resting on a substrate, preferably a porous substrate such as concrete or wood that off-gas when coated with a thermoplastic material; and a thermoplastic powder coating topcoat overlying at least the base coat. The thermosetting basecoat composition consisting essentially of, in weight percent based on final formulation, and between 10 and 90% of a petroleum asphalt; between 10 and 90%, of a hydroxy-terminated homopolymer; and between 0.1 and 30% of a functional epoxy reactive diluent for reducing the viscosity of the composition; and further up to 5% of a surfactant for improving surface imperfections, up to 5% of an anti-oxidant; and up to 25% of a thickening agent.
Abstract:
A coherent material is formed on a substrate (10) by providing a precursor suspension (14) in which particulates are suspended in a carrier fluid, and directing the precursor suspension (14) at the substrate (10) from a first source (12). Generally contemporaneously with application of the deposited precursor suspension (14) to the surface, hot gases, e.g. hot gases produced by a flame (16), are directed at the substrate (10) from a remote second source (18) to fuse the particulates into the coherent material.
Abstract:
Method for preventing the formation of coating defects in polymeric coated surfaces in a coating process comprising a plurality of steps that occur prior to the polymeric coating of said surfaces and that contact organic and metal surfaces with a plurality of aqueous compositions in which accumulate in suspension resin particles released from said metal surfaces. Suspended resin particles are prevented from re-depositing on the organic surfaces by converting said surfaces to hydrophilic character by means of oxidizing said surfaces prior to contacting the oxidized surfaces with said suspensions.
Abstract:
Method for preventing the formation of coating defects in polymeric coated surfaces in a coating process comprising a plurality of steps that occur prior to the polymeric coating of said surfaces and that contact organic and metal surfaces with a plurality of aqueous compositions in which accumulate in suspension resin particles released from said metal surfaces. Suspended resin particles are prevented from redepositing on the organic surfaces by converting said surfaces to hydrophilic character by means of oxidizing said surfaces prior to contacting the oxidized surfaces with said suspensions.