Abstract: The drying time for aqueous asphalt emulsions used in the roofing and other waterproofing industries is shortened by separately applying an emulsion breaking agent to the substrate to be waterproofed, to the aqueous asphalt emulsion after it is applied, or both.

Abstract: The drying time for aqueous asphalt emulsions used in the roofing and other waterproofing industries is shortened by separately applying an emulsion breaking agent to the substrate to be waterproofed, to the aqueous asphalt emulsion after it is applied, or both.

Abstract: The drying time for aqueous asphalt emulsions used in the roofing and other waterproofing industries is shortened by separately applying an emulsion breaking agent to the substrate to be waterproofed, to the aqueous asphalt emulsion after it is applied, or both.

Abstract: The drying time for aqueous asphalt emulsions used in the roofing and other waterproofing industries is shortened by separately applying an emulsion breaking agent to the substrate to be waterproofed, to the aqueous asphalt emulsion after it is applied, or both.

Abstract: An electronic device of the invention includes a tip emitter formed in a well that is defined in a substrate. An extractor disposed about the well extracts emissions from the tip emitter. A wide lens focuses the emissions through its opening. The opening is sufficiently large and spaced far enough away to encompass the majority of a divergence angle of the emissions. The emissions are focused into a spot.

Abstract: An electronic device of a preferred embodiment includes a tip emitter formed in a well defined in a substrate. An extractor disposed about the well extracts emissions from the tip emitter. A wide lens is spaced apart from the extractor for focusing the emissions through an opening defined the wide lens. The opening has a diameter greater than a diameter of the well. An aperture is disposed between the extractor and the wide lens.

Abstract: An electronic device of a preferred embodiment includes a tip emitter formed in a well defined in a substrate. An extractor disposed about the well extracts emissions from the tip emitter. A wide lens is spaced apart from the extractor for focusing the emissions through an opening defined the wide lens. The opening has a diameter greater than a diameter of the well. An aperture is disposed between the extractor and the wide lens.

Abstract: An electronic device of the invention includes a tip emitter formed in a well that is defined in a substrate. An extractor disposed about the well extracts emissions from the tip emitter. A wide lens focuses the emissions through its opening. The opening is sufficiently large and spaced far enough away to encompass the majority of a divergence angle of the emissions. The emissions are focused into a spot.

Abstract: An electron lens is used for focusing electrons from a cathode to an anode. The lens includes a first conductive layer with a first opening at a first distance from the cathode. The first conductive layer is held at a first voltage. The lens also includes a second conductive layer with a second opening at a second distance from the first conductive layer and a third distance from the anode. The second conductive layer is held at a second voltage substantially equal to the voltage of the anode. The first and second openings are chosen based on the first voltage, the second voltage, the first distance, the second distance and the third distance. The opening focuses the electrons emitted from the cathode onto the anode to a spot size preferably less than 40 nanometers. The force created between the cathode and anode is minimized by the structure of the lens.

Abstract: An electron lens is used for focusing electrons from a cathode to an anode. The lens includes a first conductive layer with a first opening at a first distance from the cathode. The first conductive layer is held at a first voltage. The lens also includes a second conductive layer with a second opening at a second distance from the first conductive layer and a third distance from the anode. The second conductive layer is held at a second voltage substantially equal to the voltage of the anode. The first and second openings are chosen based on the first voltage, the second voltage, the first distance, the second distance and the third distance. The opening focuses the electrons emitted from the cathode onto the anode to a spot size preferably less than 40 nanometers. The force created between the cathode and anode is minimized by the structure of the lens.

Abstract: An inkjet ink for printing onto a print medium is provided. The inkjet ink evidences minimal tail breakup and improved drop trajectory, thereby evidencing improved print quality. The minimal tail breakup and improved drop trajectory are achieved by adding at least one surface active additive to the ink to provide the ink with a surface tension of at least 35 dyne/cm and a contact angle (with an orifice plate comprising KAPTON, an aromatic polyimide) of about 35 to 65 degrees.

Abstract: An inkjet ink for printing onto a print medium is provided. The inkjet ink evidences minimal tail breakup and improved drop trajectory, thereby evidencing improved print quality. The minimal tail breakup and improved drop trajectory are achieved by adding at least one surface active additive to the ink to provide the ink with a surface tension of at least 35 dyne/cm and a contact angle (with an orifice plate comprising KAPTON, an aromatic polyimide) of about 35 to 65 degrees.

Abstract: An ink jet printhead structure having a silicon carbide layer, an ink barrier layer disposed on the silicon carbide layer and respective ink chambers formed in the ink barrier layer over respective thin film resistors and adjacent the silicon carbide passivation layer, each chamber formed by a chamber opening in the ink barrier layer and a portion of the silicon carbide layer such that a silicon carbide surface fully extends across an area enclosed by the chamber opening, whereby a silicon carbide surface fully extends across the ink chamber. The ink chambers are more particularly configured to emit ink drops in the range of about 2 to 4 picoliters.

Abstract: A printhead used to eject fluid onto a recording medium has an integrated heat-sink which is used to cool the energy dissipation elements used to propel the fluid from the printhead. The printhead is comprised of a semiconductor substrate that has been processed with thin-film layers. On top of the thin-film layers is an orifice layer that has a pattern of orifices. Fluid feed channels, on the side of the printhead opposite the orifice, supply fluid to the pattern of orifices. Within the thin-film layers are energy dissipating elements which are used to transfer energy to the fluid thereby ejecting fluid from the orifice. The fluid is transferred to the orifice opening through fluid feed slots formed in the thin-film layer adjacent to the energy dissipation elements which is exposed in the fluid feed channel. An integrated heat-sink is attached to the energy dissipation elements to remove heat to the semiconductor substrate and the fluid supply in the fluid feed channel.

Abstract: An inkjet printhead structure comprises novel resistor circuitry that is fabricated on two different substrate layers. The dual layer circuitry reduces the required substrate surface area and printhead shelf length to increase the printer operating frequency and print density. In one embodiment of the invention, heating resistors are spread out over portions of the substrate surface area and conductors are attached to opposite ends of the heater resistors in a novel configuration. To simplify routing, the circuitry is configured so that multiple heater resistors are coupled to the same conductor return path located on a second conductive layer. In a second embodiment of the invention, the heater resistors are dimensioned in the shape of a trapezoid to provide uniform heating. Alternative resistor shapes are then introduced to provide consistent heat dissipation for variances in resistor/conductor sheet resistance.

Abstract: An improved ink flow path between an ink reservoir and ink ejection chambers in an inkjet printhead is disclosed along with a preferred printhead architecture. In the preferred embodiment, a barrier layer containing ink channels and firing chambers is located between a rectangular substrate and a nozzle member containing an array of orifices. The substrate contains two spaced apart arrays of ink ejection elements, and each orifice in the nozzle member is associated with a firing chamber and ink ejection element. The ink channels in the barrier layer have ink entrances generally running along two opposite edges of the substrate so that ink flowing around the edges of the substrate gain access to the ink channels and to the firing chambers.

Abstract: Described is an inkjet print cartridge including an ink reservoir; a substrate having a plurality of individual ink firing chambers with an ink firing element in each chamber; said ink firing chambers arranged in a first chamber array and a second chamber array and said firing chambers spaced so as to provide 600 dots per inch printing; an ink channel connecting said reservoir with said ink firing chambers, said channel including a primary channel connected at a first end with said reservoir and at a second end to a secondary channel; a separate inlet passage for each firing chamber connecting said secondary channel with said firing chamber for allowing high frequency refill of the firing chamber; a group of said firing chambers in adjacent relationship forming a primitive in which only one firing chamber in said primitive is activated at a time; a first circuit on said substrate connected to said firing elements; and a second circuit on said cartridge connected to said first circuit, for transmitting firing

Abstract: Disclosed is an inkjet print cartridge having an ink reservoir; a substrate having a plurality of individual ink firing chambers with an ink firing element in each chamber along a top surface of the substrate and having a first outer edge along a periphery of substrate; the first outer edge being in close proximity to the ink firing chambers. The ink firing chambers are arranged in a first chamber array and a second chamber array and with the firing chambers spaced so as to provide 600 dots per inch printing. An ink channel connects the reservoir with the ink firing chambers, the channel including a primary channel connected at a first end with the reservoir and at a second end to a secondary channel; the primary channel allowing ink to flow from the ink reservoir, around the first outer edge of the substrate to the secondary channel along the top surface of the substrate so as to be proximate to the ink firing chambers.

Abstract: Described is an ink delivery system for an array of nozzle orifices in a print cartridge comprising an ink reservoir; a substrate having a plurality of individual ink firing chambers with an ink firing element in each chamber; an ink channel connecting said reservoir with said ink firing chambers, said channel including a primary channel connected at a first end with said reservoir and at a second end to a secondary channel; a separate inlet passage for each firing chamber connecting said secondary channel with said firing chamber for allowing high frequency refill of the firing chamber; a group of said firing chambers in adjacent relationship forming a primitive in which only one firing chamber in said primitive is activated at a time; first circuit means on said substrate connected to said firing elements; and second circuit means on said cartridge connected to said first circuit means, for transmitting firing signals to said ink firing elements at a frequency greater than 9 kHz.

Abstract: Disclosed is an inkjet print cartridge including an ink reservoir; a substrate having a plurality of individual ink firing chambers with an ink firing element in each chamber along a top surface of said substrate and having a first outer edge along a periphery of substrate; the first outer edge being in close proximity to the ink firing chambers. The ink firing chambers are arranged in a first chamber array and a second chamber array and with the firing chambers spaced so as to provide 600 dots per inch printing. An ink channel connects the reservoir with the ink firing chambers, the channel including a primary channel connected at a first end with the reservoir and at a second end to a secondary channel; the primary channel allowing ink to flow from the ink reservoir, around the first outer edge of the substrate to the secondary channel along the top surface of the substrate so as to be proximate to the ink firing chambers.