Abstract: A printhead includes a nozzle plate including a plurality of nozzles and a plurality of liquid chambers. Each liquid chamber is in fluid communication with a respective one of the plurality of nozzles. An acoustic dampening structure includes a plurality of sets of air pockets and liquid flow restrictors. Each liquid chamber is in fluid communication with one of the sets of air pockets and liquid flow restrictors. A common liquid supply manifold is in fluid communication with each liquid chamber through the liquid flow restrictor associated with the liquid chamber.

Abstract: A printhead includes a plurality of liquid channels and a nozzle plate. The nozzle plate includes a plurality of nozzles and an acoustic dampening structure. The acoustic dampening structure includes a plurality of sets of air pockets and liquid flow restrictors. Each set of air pockets and liquid flow restrictors is in fluid communication with a respective one of the plurality of nozzles. Each liquid channel is in fluid communication with the respective one of the plurality of nozzles through the associated liquid flow restrictor. A common liquid supply manifold is in fluid communication with the plurality of liquid chambers.

Abstract: A printhead includes a plurality of liquid channels and a nozzle plate. The nozzle plate includes a plurality of nozzles and an acoustic dampening structure. The acoustic dampening structure includes a plurality of sets of air pockets and liquid flow restrictors. Each set of air pockets and liquid flow restrictors is in fluid communication with a respective one of the plurality of nozzles. Each liquid channel is in fluid communication with the respective one of the plurality of nozzles through the associated liquid flow restrictor. A common liquid supply manifold is in fluid communication with the plurality of liquid chambers.

Abstract: A printhead includes a nozzle plate including a plurality of nozzles and a plurality of liquid chambers. Each liquid chamber is in fluid communication with a respective one of the plurality of nozzles. An acoustic dampening structure includes a plurality of sets of air pockets and liquid flow restrictors. Each liquid chamber is in fluid communication with one of the sets of air pockets and liquid flow restrictors. A common liquid supply manifold is in fluid communication with each liquid chamber through the liquid flow restrictor associated with the liquid chamber.

Abstract: A microfluidic device includes a substrate; at least one inorganic layer provided on the substrate; a patterned epoxy layer formed over the at least one inorganic layer, the patterned epoxy layer including a wall that defines a location for a fluid in the microfluidic device; and an alkoxysilane material containing a primary or secondary amine for promoting adhesion between the at least one inorganic layer and the patterned epoxy layer.

Abstract: A method of manufacturing a printhead includes providing a substrate and a filter membrane structure. A first portion of the substrate defines a plurality of nozzles and a second portion of the substrate defines a plurality of liquid chambers. Each liquid chamber of the plurality of liquid chambers is in fluid communication with a respective one of the plurality of nozzles. The filter membrane structure is adhered, for example, laminated, to the second portion of the substrate. Each liquid chamber of the plurality of liquid chambers is in fluid communication with a distinct portion of the filter membrane structure. Pores are formed in the filter membrane structure using a photo-lithography process.

Abstract: A pattern of electrically connected micro-wires comprises a plurality of micro-wires arranged in an intersecting pattern forming intersection corners. A portion of a first micro-wire is coincident with a portion of a second micro-wire to form a coincident portion such that the coincident portion is non-visually resolvable by the human visual system and the coincident portion has a length greater than the sum of the widths of the first and second micro-wires or has at least one rounded intersection corner.

Abstract: A conductive micro-wire structure includes a substrate and a plurality of micro-wires formed on or in the substrate in an intersecting pattern and forming intersection corners. A portion of a first micro-wire is coincident with a portion of a second micro-wire to form a coincident portion such that the coincident portion is non-visually resolvable by the human visual system and the coincident portion has a length greater than the sum of the widths of the first and second micro-wires or has one or more rounded intersection corners.

Abstract: A method for making a microfluidic device, the method includes providing at least one inorganic layer on a substrate; applying an alkoxysilane material containing a primary or secondary amine on the at least one inorganic layer; baking the applied alkoxysilane material at a temperature greater than 130 degrees C.; applying an epoxy material to form an epoxy layer, wherein the applied alkoxysilane material is disposed at an interface between the epoxy layer and the at least one inorganic layer; and patterning the epoxy layer to provide a wall for defining a location for a fluid in the microfluidic device.

Abstract: A printer includes a printhead die including liquid ejectors separated by walls. Each liquid ejector includes a nozzle orifice and an associated drop forming mechanism. First and second liquid feed channels, extending in opposite directions, are in fluid communication with each liquid ejector. A liquid inlet includes a plurality of first and second segments in fluid communication with the first liquid feed channels and the second liquid feed channels, respectively. The first and second segments are located on opposite sides of the nozzle orifice. For a given liquid ejector, both of the first and second segments are directly in line with the liquid ejector. An electrical lead extends from each drop forming mechanism toward an edge of the printhead die. At least one of the electrical leads is positioned between neighboring segments of at least one of the first and second segments of the liquid inlet.

Abstract: A printhead and a method of manufacturing a printhead are provided. The printhead includes a polymeric substrate including a surface. Portions of the polymeric substrate define a liquid chamber. A material layer is disposed on the surface of the polymeric substrate. Portions of the material layer define a nozzle bore. The nozzle bore is in fluid communication with the liquid chamber.

Abstract: An inkjet printhead die for an inkjet print head, wherein the inkjet printhead die comprises a composite substrate that includes a planar semiconductor member, a planar substrate member and an interface at which the planar semiconductor member is fused to the planar substrate member.

Abstract: A printhead includes a substrate, a filter membrane structure, and a liquid source. A first portion of the substrate defines a plurality of nozzles. A second portion of the substrate defines a plurality of liquid chambers. Each liquid chamber of the plurality of liquid chambers is in fluid communication with a respective one of the plurality of nozzles. The filter membrane structure is in contact with the second portion of the substrate. Each liquid chamber of the plurality of liquid chambers is in fluid communication with a distinct portion of the filter membrane structure. The filter membrane structure includes a polymeric material layer. The liquid source provides liquid under pressure through the filter membrane structure. The pressure is sufficient to jet an individual stream of the liquid through each nozzle of the plurality of nozzles after the liquid flows through the filter membrane structure.

Abstract: A liquid ejector includes a substrate, a heating element, a dielectric material layer, and a chamber. The substrate includes a first surface. The heating element is located over the first surface of the substrate such that a cavity exists between the heating element and the first surface of the substrate. The dielectric material layer is located between the heating element and the cavity such that the cavity is laterally bounded by the dielectric material layer. The chamber, including a nozzle, is located over the heating element. The chamber is shaped to receive a liquid with the cavity being isolated from the liquid.

Abstract: A method of continuously ejecting liquid includes providing a liquid ejection system that includes a substrate and an orifice plate affixed to the substrate. Portions of the substrate define a liquid chamber. The orifice plate includes a MEMS transducing member that extends over at least a portion of the liquid chamber. A compliant membrane is positioned in contact with the MEMS transducing member. The compliant membrane includes an orifice. Liquid is provided under a pressure sufficient to eject a continuous jet of the liquid through the orifice located in the compliant membrane of the orifice plate by a liquid supply. A drop of liquid is caused to break off from the liquid jet by selectively actuating the MEMS transducing member which causes a portion of the compliant membrane to be displaced relative to the liquid chamber.

Abstract: A liquid ejector includes a structure defining a plurality of chambers with one of the chambers including a first and second surface. The first surface includes a nozzle orifice. A drop forming mechanism is located on the second surface of the chamber opposite the nozzle orifice. First and second liquid feed channels are in fluid communication with the chamber. First and second segments of a segmented liquid inlet are in fluid communication with the first and second liquid feed channels, respectively. The first and second segments of the segmented liquid inlet are also in fluid communication with another one of the plurality of chambers. Liquid is provided to the chamber through the first and second liquid feed channels from the segmented liquid inlet. A drop of the liquid is ejected through the nozzle orifice of the chamber by operating the drop forming mechanism.

Abstract: A method of characterizing an array of resistive heaters, a first resistive heater of the array having a nominal sheet resistance, a first nominal length and a first nominal width, the method includes (a) providing a first configuration test resistor disposed proximate the first resistive heater, the first configuration test resistor including a second nominal length and a second nominal width, wherein the second nominal length is different from the first nominal length; (b) measuring a resistance of the first resistive heater; (c) measuring a resistance of the first configuration test resistor; and (d) determining the actual sheet resistance and the actual length of the first resistive heater based on the measured resistances of the first resistive heater and the first configuration test resistor.

Abstract: A fluid ejector includes a substrate, a MEMS transducing member, a compliant membrane, walls, and a nozzle. First portions of the substrate define an outer boundary of a cavity. Second portions of the substrate define a fluidic feed. A first portion of the MEMS transducing member is anchored to the substrate. A second portion of the MEMS transducing member extends over at least a portion of the cavity and is free to move relative to the cavity. The compliant membrane is positioned in contact with the MEMS transducing member. A first portion of the compliant membrane covers the MEMS transducing member. A second portion of the compliant membrane is anchored to the substrate. Partitioning walls define a chamber that is fluidically connected to the fluidic feed. At least the second portion of the MEMS transducing member is enclosed within the chamber. The nozzle is disposed proximate to the second portion of the MEMS transducing member and distal to the fluidic feed.

Abstract: A continuous liquid ejection system includes a substrate defining a liquid chamber. An orifice plate, affixed to the substrate, includes a MEMS transducing member. The MEMS transducing member includes a first portion anchored to the substrate and a second portion extending over and free to move relative to the liquid chamber. A compliant membrane, positioned in contact with the MEMS transducing member, includes an orifice and a first portion covering the MEMS transducing member and a second portion anchored to the substrate. A liquid supply provides a liquid to the liquid chamber under a pressure sufficient to eject a continuous jet of the liquid through the orifice located in the compliant membrane. The MEMS transducing member is selectively actuated to cause a portion of the compliant membrane to be displaced relative to the liquid chamber to cause a drop of liquid to break off from the liquid jet.

Abstract: A method of characterizing an array of resistive heaters, a first resistive heater of the array having a nominal sheet resistance, a first nominal length and a first nominal width, the method includes (a) providing a first configuration test resistor disposed proximate the first resistive heater, the first configuration test resistor including a second nominal length and a second nominal width, wherein the second nominal length is different from the first nominal length; (b) measuring a resistance of the first resistive heater; (c) measuring a resistance of the first configuration test resistor; and (d) determining the actual sheet resistance and the actual length of the first resistive heater based on the measured resistances of the first resistive heater and the first configuration test resistor.