| 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 |
