| Patent application number | Description | Published |
|---|
| 20080303872 | NOZZLE ARRANGEMENT FOR AN INKJET PRINTER CONFIGURED TO MINIMIZE THERMAL LOSSES - Provided is a nozzle arrangement for an inkjet printer. The nozzle arrangement includes a wafer substrate defining an ink passage and a nozzle plate supported on said substrate by side walls to define an ink chamber operatively supplied with ink via said ink passage, the nozzle plate defining an ink ejection port surrounded by a nozzle rim. The arrangement also includes a heater element bonded to the nozzle plate about said ejection port inside the chamber for thermal ejection of ink from the chamber, wherein the heater element is bonded to the nozzle plate by means of a low thermal product layer to reduce thermal losses from the heater element to the nozzle plate. | 12-11-2008 |
| 20090040276 | PRINTHEAD WITH HEATERS OFFSET FROM NOZZLES - A thermal inkjet printhead of the roof shooter type that slightly offsets the nozzle aperture centroid from the heater element centroid to correct drop trajectory misdirection caused by vapor bubble asymmetries. | 02-12-2009 |
| 20090066742 | PRINTHEAD WITH INCREASING DRIVE PULSE TO COUNTER HEATER OXIDE GROWTH - An inkjet printer that has a printhead with an array of ejection devices for ejecting drops of liquid onto a media substrate. Each of the ejection devices having a chamber for holding liquid, a nozzle in fluid communication with the chamber and a heater positioned in the chamber for contact with the liquid such that resistive heating of the heater generates a vapour bubble that ejects a drop of the liquid through the nozzle. The printer also has a controller for receiving print data and generating drive pulses to energize the heaters in accordance with the print data. The controller increases the drive pulse energy during the printhead lifetime. | 03-12-2009 |
| 20090231383 | DOUBLE LASER DRILLING OF A PRINTHEAD INTEGRATED CIRCUIT ATTACHMENT FILM - A method of fabricating an apertured polymeric film. The method comprising the steps of: (a) masking a polymeric film with a first mask having first laser transmission zones defined therein; (b) laser-ablating first apertures through the polymeric film using the first mask; (c) masking the film with a second mask having second laser transmission zones defined therein, each second zone being aligned with a corresponding first aperture, and each second zone having greater perimeter dimensions than the corresponding first aperture; and (d) reaming the first apertures by laser-ablating the polymeric film using the second mask, the reamed first apertures defining second apertures in the film. | 09-17-2009 |
| 20090322813 | INKJET PRINTHEAD WITH VARIABLE DRIVE PULSE - An inkjet printhead with an array of nozzles | 12-31-2009 |
| 20100097429 | INKJET PRINTHEAD WITH TITANIUM ALUMINIUM ALLOY HEATER - An inkjet printhead with a resistive heaters for vaporizing ink to eject drops through respective nozzles. The heater is formed from a TiAlX alloy where Ti contributes more than 40% by weight, Al contributes more than 40% by weight and X contributes less than 5% by weight and comprises zero or more of Ag, Cr, Mo, Nb, Si, Ta and W. | 04-22-2010 |
| 20100128090 | Mems Bubble Generator Incorporating Superalloy Heater In Direct Contact With Bubble Formation Liquid Without Intervening Protective Coating - A MEMS vapor bubble generator includes a chamber for holding liquid; and a heater positioned in the chamber, the heater being formed using a sputtering technique. The heater is formed from a superalloy material. The superalloy material of the heater is in direct contact with the liquid, without any intervening protective coating. The superalloy has a crystalline structure with a grain size less than 100 nano-metres. The superalloy is MCrAlX, where M is one or more of Ni, Co, Fe with M contributing at least 50% by weight, Cr contributing between 8% and 35% by weight, Al contributing more than zero but less than 8% by weight, and X contributing less than 25% by weight, with X consisting of zero or more other elements, preferably including but not limited to Mo, Re, Ru, Ti, Ta, V, W, Nb, Zr, B, C, Si, Y, Hf. | 05-27-2010 |
| 20100171795 | INKJET PRINTHEAD INTERGRATED CONFIGURED TO MINIMIZE THERMAL LOSSES - Provided is an inkjet printhead integrated circuit that has a wafer substrate that has an ink passage, and a nozzle plate supported on the substrate by side walls to define an ink chamber supplied with ink via the ink passage. The nozzle plate has an ink ejection port corresponding to the ink chamber. A heater element is bonded to the nozzle plate inside the chamber for vaporising ink to generate a vapour bubble that ejects ink through the ejection port. The heater element is bonded to the nozzle plate with a low thermal product layer. The thermal product thermal product is less than 1495 Jm | 07-08-2010 |
| 20100302314 | INKJET NOZZLE ASSEMBLY HAVING SUSPENDED BEAM HEATER ELEMENT OFFSET FROM NOZZLE APERTURE - An inkjet nozzle assembly includes a nozzle chamber having a planar roof spaced apart from a floor. A heater element is suspended in the nozzle chamber and is configured as a planar beam extending longitudinally and parallel with a plane of the roof. A nozzle aperture defined in the roof has a centroid offset from a longitudinal centroid of the planar beam. | 12-02-2010 |
| 20110122183 | PRINTHEAD INCORPORATING PRESSURE PULSE DIFFUSING STRUCTURES BETWEEN INK CHAMBERS SUPPLIED BY SAME INK INLET - An inkjet printer includes a printhead having a plurality of ink chambers fed be an ink inlet, each ink chamber having a heater element for ejecting drops of ink from a nozzle aperture of each chamber; a plurality of pressure pulse diffusing structure positioned between the plurality of ink chambers fed by the ink inlet, the plurality of pressure pulse diffusing structures for retarding a propagation of pressure waves generated by each ink chamber to adjacent ink chambers; and a controller for receiving print data and generating drive pulses to energize the heater elements in accordance with the print data. The controller increases the drive pulse energy during the printhead lifetime such that the drive pulse energy is never less than that of a preceding drive pulse. | 05-26-2011 |
