Patent application number | Description | Published |
20100025322 | Micro-Fluidic Device Having an Improved Filter Layer and Method for Assembling A Micro-Fluidic Device - A method for assembling a micro-fluidic device better preserves the integrity of a filter in a filter layer and simplifies the bonding of the filter layer to the channel layers on each side of the filter layer. The method includes aligning a polymer layer having a plurality of filter elements and a plurality of fluid passages arranged between the filter elements between two substrates of a micro-fluidic device, and bonding the polymer layer between the two substrates to seal an area between the filter elements and the fluid passages to enable fluid flow through the filter elements to be segregated from fluid flow through the fluid passages. | 02-04-2010 |
20100201725 | DRIVING WAVEFORM FOR DROP MASS AND POSITION - A drop emitting device that includes a drop generator, a drive signal including a plurality of fire intervals applied to the drop generator, wherein the drive signal includes in each fire interval a bi-polar drop firing waveform or a non-firing waveform. | 08-12-2010 |
20100214374 | Drop Generator - A drop generator includes a pressure chamber and a flexible diaphragm plate disposed on the chamber and forming a wall of the pressure chamber. A piezoelectric transducer having a bottom surface is attached to the diaphragm plate. The diaphragm plate includes a recess that forms a perimeter around the bottom surface of the transducer that partially underlies at least one edge of the bottom surface. An inlet channel is connected to the pressure chamber and configured to direct ink to the pressure chamber from a manifold. An outlet channel is connected to the pressure chamber to receive ink from the pressure chamber and has a channel axis that is perpendicular to the diaphragm plate. The outlet channel includes a first outlet channel section and a second outlet channel section. The first outlet channel section includes a plurality of subsections having alternating diameters. The second outlet channel section includes an aperture disposed at an end thereof. The second outlet channel section has a substantially continuous cross-sectional shape and a length that is greater than a length of the first outlet channel section. | 08-26-2010 |
20110141202 | High Frequency Mechanically Actuated Inkjet - An inkjet ejector has been developed that enables the ejector to be operated at a frequency greater than 80 kHz. The inkjet ejector includes a body layer in which a pressure chamber is configured with an outlet having a volume that is less than a predetermined volumetric threshold, a flexible diaphragm plate disposed on the pressure chamber to form a wall of the pressure chamber, a piezoelectric transducer having a bottom surface attached to the diaphragm plate, and an inlet layer in which an inlet channel is configured to connect the pressure chamber to a source of liquid ink, a cross-sectional area of the inlet channel at the pressure chamber divided by a length of the inlet channel being greater than a predetermined linear threshold. | 06-16-2011 |
20110148993 | Inkjet Ejector Having a Polymer Aperture Plate Attached to an Outlet Plate and Method for Assembling an Inkjet Ejector - A method forms apertures in a polymer aperture plate configured for use in a piezoelectric print head. The method includes bonding a polymer aperture plate to an outlet plate configured with outlets, and aligning a laser with the outlets in the outlet plate to ablate apertures in the polymer aperture plate that are aligned with the outlets. | 06-23-2011 |
20110148994 | Print Head Having a Polymer Aperture Plate and Method for Assembling a Print Head - A method for bonding a polymer layer to an outlet plate for an inkjet print head has been developed that enables the polymer layer to be attached to the outlet plate with little or no bowing of the polymer layer. The method includes aligning recesses in a bonding plate with channels in an outlet plate, interposing a polymer layer between the bonding plate and the outlet plate, and pressing the bonding plate against the polymer layer to bond the polymer layer to the outlet plate. | 06-23-2011 |
20120247659 | Method For Assembling A Printhead Having An Inkjet Ejector With A Polymer Aperture Plate Attached To An Outlet Plate - A method of assembly produces a printhead having a polymer aperture plate and outlet plate that are at least 25 mm in length. The method includes bonding the polymer aperture plate to the outlet plate, which is configured with outlets. A laser is aligned with the outlets in the outlet plate to ablate apertures in the polymer aperture plate and the outlet plate is bonded to an inkjet stack to couple the outlets in the outlet plate to pressure chambers in a body plate in the inkjet stack. | 10-04-2012 |
20130300801 | FLUIDIC STRUCTURE THAT ALLOWS REMOVAL OF AIR BUBBLES FROM PRINT HEADS WITHOUT GENERATING WASTE INK - A fluidic structure has a first chamber having a connection to a fluid reservoir and a connection to an array of apertures, the chamber forming a flow path between the fluid reservoir and the array of apertures, a second chamber having a connection to at least one vent connected to an atmosphere external to the fluidic structure, and at least one path between the first chamber and the second chamber. | 11-14-2013 |