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Andrew W. HAYS patents

Recent bibliographic sampling of Andrew W. HAYS patents listed/published in the public domain by the USPTO (USPTO Patent Application #,Title):



10/02/14 - 20140295064 - Printhead with nanotips for nanoscale printing and manufacturing
A nanoprinthead including an array of nanotip cantilevers, where each nanotip cantilever includes a nanotip at an end of a cantilever, and a method for forming the nanoprinthead. Each nanotip may be individually addressable through use of an array of piezoelectric actuators. Embodiments for forming a nanoprinthead including an array...
Inventors: Peter J. Nystrom, Andrew W. Hays, Bijoyraj Sahu (Xerox Corporation)

05/01/14 - 20140120229 - Printing 3d tempered chocolate
A method for printing a three-dimensional crystalline structure such as a chocolate layer wherein, after printing, the material has a desired crystal structure. An embodiment can include printing a liquid first layer of material with a printer onto a second layer of material having a crystal structure. Subsequently, the printed...
Inventors: David Allen Mantell, Andrew W. Hays, Zahra C. Langford (Xerox Corporation)

01/23/14 - 20140022320 - Multiple layer filter
A structure and method including a filter assembly, wherein the structure can be an ink jet printhead including the filter assembly. The filter assembly can include a first filter layer having a plurality of pores therein, wherein the pores have a first pitch, and a second filter layer having a...
Inventors: Andrew W. Hays, Jun Ma, Peter J. Nystrom, Bradley J. Gerner (Xerox Corporation)

12/05/13 - 20130321532 - Screen printed jet stack heater
Apparatus and methods for heating a printer jet stack. The apparatus includes a first layer and a second layer disposed generally parallel to the first layer. The apparatus also includes a heating layer including a thermal epoxy configured to generate heat when an electrical current is applied thereto. The heating...
Inventors: Bradley James Gerner, Peter J. Nystrom, Andrew W. Hays (Xerox Corporation)

08/15/13 - 20130208057 - Water vapor control structure
In some aspects of the present application, an inkjet printing device is disclosed that can comprises an enclosed module configured to store ink and provide a path for ink flow; and an annular structure surrounding the path for ink flow, wherein the annular structure comprises a first polymer structure; a...
Inventors: Andrew W. Hays, Jun Ma (Xerox Corporation)

07/25/13 - 20130187981 - Rock screen with particle trap
The possibility that narrow, high aspect ratio particles will pass through a rock screen of a print head is reduced by minimizing the number of times the particles interact with the rock screen. Each interaction is an opportunity for the particle to be positioned in an orientation such that it...
Inventors: Andrew W. Hays, Terrance L Stephens (Xerox Corporation)

06/27/13 - 20130162737 - Polymer internal contamination filter for ink jet printhead
A printhead for printing ink includes a particulate filter manufactured from a polymer sheet such as a polyimide sheet. Filter openings within the particulate filter can be formed using a mask and a laser beam to ablate exposed portions of the polymer sheet. Embodiments of the present teachings can result...
Inventors: Terrance L. Stephens, James D. Padgett, John R. Andrews, Andrew W. Hays (Xerox Corporation)

06/27/13 - 20130162723 - Ink jet printing systems and methods with pre-fill and dimple design
Systems and methods of ejecting ink drops from an inkjet printer are disclosed. The systems and methods can include a printhead with one or more actuators with associated nozzles and membranes. A voltage waveform can be applied to the actuators to fill the actuators with a volume of ink and...
Inventors: Andrew W. Hays, Richard P. Germain, Joseph A. Degroot, Peter J. Nystrom, Jun Ma (Xerox Corporation)

06/13/13 - 20130147886 - Printhead having particle circulation with separation
A printhead having a circulation device to create a directed flow of ink and a separator to divert particulate matter, which can be present in the ink, to a location where the particulate matter falls out of the directed flow. The circulation device can include a heater configured to provide...
Inventors: Andrew W. Hays (Xerox Corporation)

06/13/13 - 20130147879 - Actuator deprime for bubble control for ink jet printhead
A method and structure for depriming an ink jet printhead. To deprime ink from a printhead at a location between a nozzle (aperture) and a particulate filter (rock screen), a force (pressure) is applied to the ink. The pressure can either be a positive pressure applied to the nozzle from...
Inventors: Andrew W. Hays, Antonio L. Williams (Xerox Corporation)

05/23/13 - 20130127957 - Mixing device and mixing method
A mixing method and device are disclosed. The mixing method includes providing a drop generating device including a first drop ejector, a second drop ejector and a collector. The mixing method also includes ejecting a plurality of drops of a first reactant from the first drop ejector and ejecting a...
Inventors: David Allen Mantell, Peter Michael Gulvin, Pinyen Lin, Andrew W Hays (Xerox Corporation)

10/18/12 - 20120262522 - Multi-plane filter laminate to increase filtration surface area
A printhead including a jetstack configured to include a multi-plane filter laminate. The multi-plane filter laminate includes a first rock screen subassembly and a second rock screen subassembly. Each subassembly is configured to include an upstream pocket layer, a downstream pocket layer aligned with the upstream pocket layer, and a...
Inventors: Andrew W. Hays (Xerox Corporation)

02/16/12 - 20120038700 - On-chip heater and thermistors for inkjet
A chip used for dispensing a fluid such as ink provides ink-dispensing ejectors having an ink cavity over a supporting substrate, and further provides a heater for heating the ink in the cavity. The heater can be interposed between the substrate and the ink cavity to provide direct heating of...
Inventors: Peter M. Gulvin, Andrew W. Hays (Xerox Corporation)

12/08/11 - 20110298870 - Multiple priming holes for improved freeze/thaw cyclilng of memsjet printing devices
An ink jet print head includes an ink chamber defined by an electrostatically actuated membrane and a nozzle plate opposing the membrane. The nozzle plate includes a nozzle hole and a group of priming holes, the priming holes configured to maintain a substantially ink free surface on the nozzle plate...
Inventors: James M. Casella, Andrew W. Hays, Peter M. Gulvin, Jun Ma (Xerox Corporation)

12/08/11 - 20110298866 - Low-adhesion coating to eliminate damage during freeze/thaw of memsjet printheads
Exemplary embodiments provide materials, systems and methods for ink jet printhead, wherein a low-adhesion coating can be applied to at least one surface portion of an ink chamber within the printhead to reduce or eliminate actuator membrane damage during ink freeze/thaw cycles....
Inventors: James M. Casella, Andrew W. Hays, Peter M. Gulvin, Jun Ma (Xerox Corporation)

09/22/11 - 20110228005 - Ink jet print head plate
A nozzle plate for an inkjet printhead, the nozzle plate including a nozzle through which ink is ejected, the nozzle optimally positioned in the nozzle plate. The nozzle plate further including at least one priming hole, the priming hole distinct from and of a smaller diameter than the nozzle, the...
Inventors: Peter M. Gulvin, Andrew W. Hays, James M. Casella (Xerox Corporation)

12/23/10 - 20100321432 - Ink jet printing systems and methods with pre-fill and dimple design
Systems and methods of ejecting ink drops from an inkjet printer are disclosed. The systems and methods can include a printhead with one or more actuators with associated nozzles and membranes A voltage waveform can be applied to the actuators to fill the actuators with a volume of ink and...
Inventors: Andrew W. Hays, Richard P. Germain, Joseph A. Degroot, Peter J. Nystrom, Jun Ma (Xerox Corporation)

09/23/10 - 20100238227 - Printhead de-prime system and method for solid ink systems
A system and method to provide pressure to de-prime a printhead. An image forming device comprises an ink reservoir that contains ink and provides the ink to a printhead. When a fault condition is detected that indicates a likelihood of a solidifying of the ink, the printhead is de-primed by...
Inventors: Peter J. Nystrom, Andrew W. Hays, Scott J. Phillips (Xerox Corporation)

04/01/10 - 20100079533 - On-chip heater and thermistors for inkjet
A chip used for dispensing a fluid such as ink provides ink-dispensing ejectors having an ink cavity over a supporting substrate, and further provides a heater for heating the ink in the cavity. The heater can be interposed between the substrate and the ink cavity to provide direct heating of...
Inventors: Peter M. Gulvin, Andrew W. Hays (Xerox Corporation)

03/12/09 - 20090066747 - Print element de-prime method
An image forming device comprises an ink reservoir that contains a reservoir ink. The ink reservoir is arranged to provide the reservoir ink to an included print element by means of an included ink supply channel. A print element ink thus is supplied to the print element. When a fault...
Inventors: Andrew W. Hays, James C. Diehl (Xerox Corporation)

Xerox Corporation

Archived*
(*May have duplicates - we are upgrading our archive.)

20120038700 - On-chip heater and thermistors for inkjet


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The bibliographic references displayed about Andrew W. HAYS's patents are for a recent sample of Andrew W. HAYS's publicly published patent applications. The inventor/author may have additional bibliographic citations listed at the USPTO.gov. FreshPatents.com is not associated or affiliated in any way with the author/inventor or the United States Patent/Trademark Office but is providing this non-comprehensive sample listing for educational and research purposes using public bibliographic data published and disseminated from the United States Patent/Trademark Office public datafeed. This information is also available for free on the USPTO.gov website. If Andrew W. HAYS filed recent patent applications under another name, spelling or location then those applications could be listed on an alternate page. If no bibliographic references are listed here, it is possible there are no recent filings or there is a technical issue with the listing--in that case, we recommend doing a search on the USPTO.gov website.

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