Patent application number | Description | Published |
20090295861 | CONTINUOUS FLUID JET EJECTOR WITH ANISOTROPICALLY ETCHED FLUID CHAMBERS - A fluid ejection device, a method of cleaning the device, and a method of operating the device are provided. The device includes a substrate having a first surface and a second surface located opposite the first surface. A nozzle plate is formed over the first surface of the substrate and has a nozzle through which fluid is ejected. A drop forming mechanism is situated at the periphery of the nozzle. A fluid chamber is in fluid communication with the nozzle and has a first wall and a second wall. The first wall and the second wall are positioned at an angle other than 90° relative to each other. A fluid delivery channel is formed in the substrate and extends from the second surface of the substrate to the fluid chamber. The fluid delivery channel is in fluid communication with the fluid chamber. | 12-03-2009 |
20090315951 | PRINTHEAD HAVING ISOLATED HEATER - 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. | 12-24-2009 |
20090320289 | METHOD OF FORMING A PRINTHEAD - A method of manufacturing a printhead includes providing a polymeric substrate having a surface; providing a patterned material layer on the surface of the polymeric substrate; and removing at least some of the polymeric substrate not covered by the patterned material layer using an etching process. | 12-31-2009 |
20100018949 | PRINTHEAD AND METHOD OF FORMING SAME - 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. | 01-28-2010 |
20100245855 | DOT FORMING ELEMENT ARRAYS AT DIFFERENT RESOLUTIONS - A printing device includes a first array of dot forming elements disposed on a substrate along an array direction at a first array-direction spacing to provide a first dot forming resolution R | 09-30-2010 |
20110025780 | PRINTHEAD HAVING REINFORCED NOZZLE MEMBRANE STRUCTURE - A printhead includes a nozzle membrane, a substrate, and a support structure. The nozzle membrane includes an external surface, a length, and a plurality of nozzles located along the length of the nozzle membrane. The nozzle membrane is affixed to the substrate. The substrate includes a liquid feed channel that provides liquid to the plurality of nozzles of the nozzle membrane. The liquid feed channel extends along the length of the nozzle membrane such that the liquid feed channel is common to each nozzle of the plurality of nozzles of the nozzle membrane. The support structure is affixed to the external surface of the nozzle membrane to provide structural support to the nozzle membrane. | 02-03-2011 |
20110128316 | LIQUID DROP EJECTION USING DUAL FEED EJECTOR - A liquid ejector is provided that includes a structure defining a plurality of chambers with one of the plurality of chambers including a first surface and a 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. A first liquid feed channel and a second liquid feed channel are in fluid communication with the chamber. A first segment of a segmented liquid inlet is in fluid communication with the first liquid feed channel and a second segment of the segmented liquid inlet is in fluid communication with the second liquid feed channel. The first segment of the segmented liquid inlet is also in fluid communication with another one of the plurality of chambers and the second segment of the liquid inlet is also in fluid communication with another one of the plurality of chambers. A liquid is provided to the chamber through the first liquid feed channel and the second liquid feed channel from the segmented liquid inlet. A drop of the liquid is ejected through the nozzle orifice of the chamber by operating the associated drop forming mechanism. | 06-02-2011 |
20110258851 | METHOD OF MANUFACTURING PRINTHEAD INCLUDING POLYMERIC FILTER - 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. | 10-27-2011 |
20110261124 | PRINTHEAD INCLUDING FILTER ASSOCIATED WITH EACH NOZZLE - A printhead includes a nozzle plate, a filter, and a plurality of walls. Portions of the nozzle plate define a plurality of nozzles. The filter, for example, a filter membrane, includes a plurality of pores grouped in a plurality of pore clusters. Each of the plurality of walls extends from the nozzle plate to the filter membrane to define a plurality of liquid chambers positioned between the nozzle plate and the filter membrane. Each liquid chamber of the plurality of liquid chambers is in fluid communication with a respective one of the plurality of nozzles. Each liquid chamber of the plurality of liquid chambers is in fluid communication with the plurality of pores of a respective one of the plurality of pore clusters. | 10-27-2011 |
20110261125 | CONTINUOUS PRINTHEAD INCLUDING POLYMERIC FILTER - 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. | 10-27-2011 |
20110261126 | PRINTHEAD INCLUDING POLYMERIC FILTER - A printhead includes a substrate and a filter membrane structure in contact with the substrate. 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 is in fluid communication with a nozzle. The filter membrane structure includes a polymeric material layer and a plurality of pores. The plurality of pores are positioned to filter liquid provided to the plurality of liquid chambers. | 10-27-2011 |
20110267404 | INKJET PRINTING DEVICE WITH COMPOSITE SUBSTRATE - 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 | 11-03-2011 |
20120062654 | LIQUID DROP EJECTION USING DUAL FEED EJECTOR - 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. | 03-15-2012 |
20120268525 | CONTINUOUS EJECTION SYSTEM INCLUDING COMPLIANT MEMBRANE TRANSDUCER - A continuous liquid ejection system 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. 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 liquid chamber and is free to move relative to the liquid chamber. A compliant membrane is positioned in contact with the MEMS transducing member. A first portion of the compliant membrane covers the MEMS transducing member and a second portion of the compliant membrane is anchored to the substrate. The compliant membrane includes an orifice. 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 of the orifice plate. 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. | 10-25-2012 |
20120268526 | FLUID EJECTOR INCLUDING MEMS COMPOSITE TRANSDUCER - 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. | 10-25-2012 |
20120268529 | CONTINUOUS LIQUID EJECTION USING COMPLIANT MEMBRANE TRANSDUCER - 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. 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 liquid chamber. The second portion of the MEMS transducing member is free to move relative to the liquid chamber. A compliant membrane is positioned in contact with the MEMS transducing member. A first portion of the compliant membrane covers the MEMS transducing member and a second portion of the compliant membrane is anchored to the substrate. 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. | 10-25-2012 |
20130002753 | MICROFLUIDIC DEVICE HAVING IMPROVED EPOXY LAYER ADHESION - 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. | 01-03-2013 |
20130004898 | MAKING A MICROFLUIDIC DEVICE WITH IMPROVED ADHESION - 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. | 01-03-2013 |
20130027449 | INKJET PRINTHEAD WITH TEST RESISTORS - An inkjet printhead includes an array of drop ejectors, a first drop ejector of the array including a first resistive heater having a first nominal length and a first nominal width; and 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. | 01-31-2013 |
20130027461 | METHOD OF CHARACTERIZING ARRAY OF RESISTIVE HEATERS - 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. | 01-31-2013 |
20140216783 | MICRO-WIRE PATTERN WITH OFFSET INTERSECTIONS - 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. | 08-07-2014 |
20140216790 | CONDUCTIVE MICRO-WIRE STRUCTURE WITH OFFSET INTERSECTIONS - 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. | 08-07-2014 |
20140307035 | PRINTHEAD INCLUDING ACOUSTIC DAMPENING STRUCTURE - 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. | 10-16-2014 |
20140307036 | PRINTHEAD INCLUDING ACOUSTIC DAMPENING STRUCTURE - 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. | 10-16-2014 |