Patent application number | Description | Published |
20080295308 | Method of forming an array of piezoelectric actuators on a membrane - A method of forming an array of piezoelectric actuators on a membrane ( | 12-04-2008 |
20080295333 | Method of manufacturing a piezoelectric ink jet device - A method of manufacturing a piezoelectric ink jet device having a pressure chamber, a flexible membrane delimiting the pressure chamber, a piezoelectric actuator mounted on the membrane, and a rigid substrate attached to the side of the membrane carrying the actuator, which includes the steps of providing the piezoelectric actuator with an electrode on at least one side, attaching the actuator with its electrode side to a carrier plate, bonding the rigid substrate to the side of the carrier plate carrying the actuator, and removing material from the carrier plate on the side opposite to the actuator and leaving only a thin layer of the carrier plate which then forms the membrane. | 12-04-2008 |
20080297006 | Piezoelectric actuator and method of producing the same - A piezoelectric actuator having a bottom electrode attached to a membrane, a piezoelectric layer on the bottom electrode, and a top electrode formed on the piezoelectric layer, wherein the bottom electrode extends substantially over the entire bottom surface of the piezoelectric layer, and at least a peripheral portion of a top surface of the piezoelectric layer and side faces of that layer are covered with an insulating layer, and wherein in the peripheral portion of the top surface of the piezoelectric layer the top electrode is superposed on the insulating layer. | 12-04-2008 |
20110217797 | METHOD OF MANUFACTURING AN INK JET PRINT HEAD - In a method of manufacturing an ink jet print head that includes a number of aligned modules, an alignment mark is foamed on a first and a second adjacent module, wherein the alignment mark is positioned on a boundary between the first and the second adjacent module along which the wafer is to be separated. In a separating step the wafer is separated into separate modules such that the alignment mark is divided over said first and second adjacent module. At least one of said first and second module is aligned by reference to the divided alignment mark. The method improves the accuracy, with which the modules can be aligned. | 09-08-2011 |
20120229564 | INKJET PRINT HEAD WIPER FOR PARTIALLY WETTING AND ANTI-WETTING NOZZLE SURFACES, CLEANING UNIT AND AN INKJET PRINTER COMPRISING SAID WIPER - In a printer, an inkjet print head is equipped with a wiper for partially wetting and non-wetting nozzle faces, for wiping excess ink off a nozzle face, wherein the wiping surface is shaped such that the wiping surface in operation contacts the wetting area and such that the wiping surface in operation is arranged at a predetermined distance from the non-wetting area. A printer including the wiper is also provided. | 09-13-2012 |
20130201259 | INK JET PRINT HEAD WITH PIEZOELECTRIC ACTUATOR - An ink jet print head, having a pressure generation chamber arranged for being in communication with a print head nozzle and an actuator membrane for delimiting the pressure generation chamber. The actuator membrane has a substrate and a piezoelectric actuator provided on the substrate, said piezoelectric actuator having a lower electrode, an upper electrode and at least one piezoelectric layer arranged between the lower electrode and the upper electrode; the substrate and the upper electrode are arranged on opposite sides of the piezoelectric layer, and the upper electrode has a Titanium-Tungsten film. | 08-08-2013 |
20140021168 | METHOD OF FORMING A NOZZLE OF A FLUID EJECTION DEVICE - A method of forming a nozzle of a fluid ejection device, the nozzle having a straight mouth portion and a cavity portion, wherein the mouth portion is formed in a bottom surface of the substrate, and, after passivating the walls of the mouth portion, a wet etch process is applied from the bottom surface of the substrate for forming a part of the cavity portion with walls that diverge from the mouth portion, characterized in that a wet etch process is also applied from a top surface of the substrate for forming a part of the cavity portion which diverges towards the bottom surface and merges with the part that is etched from the bottom surface. | 01-23-2014 |
20140247309 | INKJET PRINT HEAD AND METHOD FOR MANUFACTURING SUCH PRINT HEAD - A print head comprises a pressure chamber in fluid communication with a nozzle and an actuator structure in operative communication with the pressure chamber for generating a pressure wave in the pressure chamber. The actuator structure comprises a membrane, wherein a first surface of the membrane forms a flexible wall of the pressure chamber and a piezo actuator, wherein the piezo actuator is arranged on a second surface of the membrane, the second surface being opposite of the first surface, such that the membrane is deformed at the position of the piezo actuator upon actuation of the piezo actuator. In the print head, the membrane is pivotably clamped between a first structure layer and a second structure layer such that the membrane pivots at the location of clamping upon deformation of the membrane due to actuation of the piezo actuator. | 09-04-2014 |
Patent application number | Description | Published |
20100152428 | LOW Tg LIGNIN MIXED ESTERS - The disclosure includes lignin mixed esters comprising first ester groups and second ester groups wherein the number of carbon atoms in the first ester group differs from the number of carbon atoms in the second ester group by 3 or more and processes of making the same. The unique thermal glass transition temperature properties of such lignin mixed esters are described. | 06-17-2010 |
20100162926 | METHOD OF MAKING A FIBER CEMENT BOARD WITH IMPROVED PROPERTIES AND THE PRODUCT - A cement product incorporating nanocrystalline cellulose and cellulose fiber throughout the product and a method of making the product. | 07-01-2010 |
20100288456 | FIBRILLATED BLEND OF LYOCELL LOW DP PULP - A fibrillated blend of lyocell and cellulosic pulp having a degree of polymerization of 200 to 1000 as measured by ASTM Test 1975-96, a method of making the blend and materials which incorporate the blend. | 11-18-2010 |
20110073015 | INTERNALLY CURING CEMENT BASED MATERIALS - A method of curing cementitious material comprising added a carboxylated bleached wood pulp fiber to the material during mixing. The fiber has a carboxyl content of from 10 to 70 meq/100 g cellulose fiber. The fibers are 0.1 to 5% by weight of the dry weight of the cementitious material. The structure produced by the method. The autogenous shrinkage of the cementitious material is reduced. | 03-31-2011 |
20120285640 | FIBRILLATED BLEND OF LYOCELL AND CELLULOSIC LOW DP PULP - A fibrillated blend of lyocell and cellulosic pulp having a degree of polymerization of 200 to 1000 as measured by ASTM Test 1975-96, a method of making the blend and materials which incorporate the blend. | 11-15-2012 |
20130213276 | INTERNALLY CURING CEMENT BASED MATERIALS - A method of curing cementitious material comprising added a carboxylated bleached wood pulp fiber to the material during mixing. The fiber has a carboxyl content of from 10 to 70 meq/100 g cellulose fiber. The fibers are 0.1 to 5% by weight of the dry weight of the cementitious material. The structure produced by the method. The autognous shrinkage of the cementitious material is reduced. | 08-22-2013 |