Abstract: Metallic bumps are formed for electrical interconnection between the charge plate and the charge drive electronics. This is achieved by having improved electrical connection between an ink jet charge plate and associated charge leads is promoted. This is achieved by integrating the termination pads, electrical transmission lines, and charging leads. The termination bumps are formed as integral parts of the charge leads and are connected directly to the charge driver board electronics by pressure contact. The bumps can be formed by mechanically indenting the termination pads or by using an interposer that has raised metallic pads aligned to the integral nickel pads and the charge driver circuitry board. First, a mask is aligned to permit additive formation of the pads, conductors, and charge leads. Then the nickel circuitry thus formed is made into a rigid charge plate and an integrated flexible section having contact bumps.

Abstract: Metallic bumps are formed for electrical interconnection between the charge plate and the charge drive electronics. This is achieved by having improved electrical connection between an ink jet charge plate and associated charge leads is promoted. This is achieved by integrating the termination pads, electrical transmission lines, and charging leads. The termination bumps are formed as integral parts of the charge leads and are connected directly to the charge driver board electronics by pressure contact. The bumps can be formed by mechanically indenting the termination pads or by using an interposer that has raised metallic pads aligned to the integral nickel pads and the charge driver circuitry board. First, a mask is aligned to permit additive formation of the pads, conductors, and charge leads. Then the nickel circuitry thus formed is made into a rigid charge plate and an integrated flexible section having contact bumps.

Abstract: A continuous linear array ink jet system and method is capable of depositing a predetermined amount of printing fluid of at least one color onto a linear array of pixels to form a predetermined image to be printed on a substrate. The invention comprises a chamber in fluidic connection to a source of pressurized print fluid. A plurality of orifices are situated in fluidic connection with the chamber to form an array of streams of print fluid from the plurality of orifices. Stimulation is used to synchronize break-up of the streams of print fluid into uniform streams of uniformly spaced drops. The printed density of the linear array of pixels is controlled by controlling the number of uniformly spaced drops on each pixel of the linear array of pixels, dependent on color density to be printed, whereby a totality of printed pixels forms a continuous tone value required to form the predetermined image to be printed.

Abstract: Films containing LLDPE having a high modulus and good tear strength for the high modulus and improved processing conditions are obtained by blending minor amounts of polystyrene or other aromatic polymer, and polypropylene with the LLDPE.

Abstract: A remote print head assembly for a continuous ink jet printing system includes an upper print head portion for generating ink droplet streams and a lower print head portion for selectively charging and catching droplets. A frame surrounds the upper and lower print head portions and has a print droplet egress opening. A closure member is selectively movable to open or close the droplet egress respectively to allow printing or to effect print head start-up operations.

Abstract: Polymeric blends comprising linear low density polyethylene (LLDPE) as the major constituent (60 percent or more), and polypropylene (PP) or ethylene-propylene copolymer having a high propylene content and ethylene-propylene rubber as minor constituents exhibit improved stiffness, tear and impact strength compared to blends of LLDPE and PP. The blends are suitable for use in the films.

Abstract: Polymeric blends comprising linear low density polyethylene (LLDPE) as the major constituent (60 percent or more), and polypropylene (PP) or ethylene-propylene copolymer having a high propylene content and ethylene-propylene-diene monomer rubber as minor constituents exhibit improved stiffness, tear and impact strength compared to blends of LLDPE and PP. The blends are suitable for use in films.

Abstract: A planar-faced charge plate having individual charge electrodes uniformly spaced along one end face thereof is provided by wrapping a length of wire around a nonconductive charge plate support structure so that individual wire segments are positioned in parallel spaced relationship across the end face. Notches may also be formed along the opposite end faces of the charge plate support structure to facilitate the positioning of the wire segments. The wire is then adhered to the structure and the wire along one face of the structure is severed to form individual charge electrodes having leads traversing at least the top face of the structure. The end face having the charge electrodes is lapped to form a parallel face. This at times requires the removal of adhesive and/or insulation as well as a portion of the outwardly facing surfaces of the charge electrodes to form the planar-faced structure.

Abstract: Gold, as well as other metals such as copper, titanium, and nickel, are etched from substrates by alkali metal iodide and bromide solutions also containing iodine and bromine, respectively. The dissolved gold is recovered as metallic gold either by precipitating it using an alkali metal hydroxide or by a decomposition technique in which the etchant solution is driven off. A method is also taught to regenerate alkali metal iodide-iodine etchant solution.

Abstract: A charge plate for an ink jet printer is fabricated from laminations etched from a thin sheet of corrosive resistant metal. The individual charge electrodes with their respective leads and connecting regions are initially supported in the thin sheet by etched supporting members. Except for the supporting members, the individual charge electrodes with their leads and contact regions are electrically and physically isolated from each other. The lamination sheets are coated with an adhesive, stacked, and bonded together. After filling the open regions in the bonded lamination stack with a structural insulating material, the etched metal supporting members are removed, providing a unitary charge plate that is rugged, dimensionally accurate, and stable.

Abstract: An improved deflection electrode assembly for a jet drop recording apparatus is heated to prevent condensation of ink mist thereon and its attendant buildup on the electrode. Heating wires are stretched above and below a thin, ribbon shaped deflection electrode and run parallel to it along its length. Thin sheets of thermally conductive but electrically nonconductive material such as mica sandwich the electrode and heating wires and serve to transfer heat from the wires to the surface of the electrode assembly. Only a slight increase in the surface temperature of the electrode assembly is necessary to prevent condensation of ink mist thereon.

Abstract: A composition and method for etching gold, particularly gold layers on ceramic substrates, in which the gold is contacted at room temperature by an aqueous solution of alkali metal bromide and bromine. The composition is relatively safe and easy to handle and rapidly etches gold.