Patents by Inventor David A. Huliba

David A. Huliba has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 7370951
    Abstract: The method and equipment for detangling individual jets in an ink jet print station utilizes a reservoir containing fluid and a printhead. The printhead has a drop generator, an orifice structure connected to the drop generator for forming numerous jets, a catcher connected to the drop generator; and a charge device secured to the catcher. A fluid supply system is connected between the printhead and the reservoir. A controller and numerous actuators are connected to the drop generator, and adapted to vibrate the drop generator. A fluid pump is connected to the fluid supply line, is operated by the controller, and is adapted to raise the pressure on the drop generator to at least an operating pressure and lower the pressure on the drop generator to a minimal pressure to prevent entanglement of the jets.
    Type: Grant
    Filed: February 12, 2007
    Date of Patent: May 13, 2008
    Assignee: Eastman Kodak Company
    Inventor: David A. Huliba
  • Publication number: 20070126829
    Abstract: The method and equipment for detangling individual jets in an ink jet print station utilizes a reservoir containing fluid and a printhead. The printhead has a drop generator, an orifice structure connected to the drop generator for forming numerous jets, a catcher connected to the drop generator; and a charge device secured to the catcher. A fluid supply system is connected between the printhead and the reservoir. A controller and numerous actuators are connected to the drop generator, and adapted to vibrate the drop generator. A fluid pump is connected to the fluid supply line, is operated by the controller, and is adapted to raise the pressure on the drop generator to at least an operating pressure and lower the pressure on the drop generator to a minimal pressure to prevent entanglement of the jets.
    Type: Application
    Filed: February 12, 2007
    Publication date: June 7, 2007
    Inventor: David Huliba
  • Patent number: 7207665
    Abstract: The method and equipment for detangling individual jets in an ink jet print station utilizes a reservoir containing fluid and a printhead. The printhead has a drop generator, an orifice structure connected to the drop generator for forming numerous jets, a catcher connected to the drop generator; and a charge device secured to the catcher. A fluid supply system is connected between the printhead and the reservoir. A controller and numerous actuators are connected to the drop generator, and adapted to vibrate the drop generator. A fluid pump is connected to the fluid supply line, is operated by the controller, and is adapted to raise the pressure on the drop generator to at least an operating pressure and lower the pressure on the drop generator to a minimal pressure to prevent entanglement of the jets.
    Type: Grant
    Filed: May 5, 2004
    Date of Patent: April 24, 2007
    Assignee: Eastman Kodak Company
    Inventor: David A. Huliba
  • Patent number: 7195333
    Abstract: An ink jet print station with improved start-up reliability includes an ink reservoir and a printhead. The printhead has at least two drop generators, a return line connected to the generator's fluid ports, an orifice plate connected to the drop generator for forming jets, at least two filters, a controller for operating the valves to control flow, and an ink pump. The ink pump is adapted to move ink from the reservoir to the printhead. Upon startup, fluid is applied independently to the first filter and then the second filter. A method for at least partially filling filters in an ink jet uses the ink jet print station with improved start up reliability.
    Type: Grant
    Filed: May 5, 2004
    Date of Patent: March 27, 2007
    Assignee: Eastman Kodak Company
    Inventor: David A. Huliba
  • Patent number: 7178897
    Abstract: A method for removing liquid in a gap of an ink jet printhead comprising a drop generator, with an outlet valve, orifice plate and charge plate, wherein a cross flush valve is additionally used to form a cross flush pressure in the drop generator, then actuators are used to vibrate the drop generator to a defined amplitude, then the outlet valve is closed to form a pressure spike in the drop generator then the pressure in the drop generator is lowered to a recommended operating pressure to establish a jet array and the system is operated until the gap is substantially free of liquid with dissolved residue.
    Type: Grant
    Filed: September 15, 2004
    Date of Patent: February 20, 2007
    Assignee: Eastman Kodak Company
    Inventor: David A. Huliba
  • Patent number: 7052108
    Abstract: A shutdown procedure is provided for removing all solvent ink from the printhead of an ink jet printer system that uses volatile ink for printing a shutdown method is provided for an inkjet printer that uses volatile inks for printing. Initially, a colorless flush fluid is provided which readily dissolves the ink. The flush fluid is crossflushed through the drop generator and caused to weep out of the orifices in the drop generator to dissolve and rinse away ink residues from the charge plate and the exterior of the orifice plate. The flush fluid is used to rinse off charging electrodes of the charge plate, the catcher face, and the catcher return line. Fluid crossflushed through the drop generator cleans the interior of the drop generator and cleans the crossflush valve.
    Type: Grant
    Filed: December 14, 2004
    Date of Patent: May 30, 2006
    Assignee: Eastman Kodak Company
    Inventors: Kenneth J. West, Meagan A. Wimmers, Jay D. Frazier, David A. Huliba
  • Publication number: 20060055726
    Abstract: A method for removing liquid in a gap of an ink jet printhead comprising a drop generator, with an outlet valve, orifice plate and charge plate, wherein a cross flush valve is additionally used to form a cross flush pressure in the drop generator, then actuators are used to vibrate the drop generator to a defined amplitude, then the outlet valve is closed to form a pressure spike in the drop generator then the pressure in the drop generator is lowered to a recommended operating pressure to establish a jet array and the system is operated until the gap is substantially free of liquid with dissolved residue.
    Type: Application
    Filed: September 15, 2004
    Publication date: March 16, 2006
    Inventor: David Huliba
  • Publication number: 20050248642
    Abstract: An ink jet print station with improved start-up reliability includes an ink reservoir and a printhead. The printhead has at least two drop generators, a return line connected to the generator's fluid ports, an orifice plate connected to the drop generator for forming jets, at least two filters, a controller for operating the valves to control flow, and an ink pump. The ink pump is adapted to move ink from the reservoir to the printhead. Upon startup, fluid is applied independently to the first filter and then the second filter. A method for at least partially filling filters in an ink jet uses the ink jet print station with improved start up reliability.
    Type: Application
    Filed: May 5, 2004
    Publication date: November 10, 2005
    Inventor: David Huliba
  • Publication number: 20050248630
    Abstract: The method and equipment for detangling individual jets in an ink jet print station utilizes a reservoir containing fluid and a printhead. The printhead has a drop generator, an orifice structure connected to the drop generator for forming numerous jets, a catcher connected to the drop generator; and a charge device secured to the catcher. A fluid supply system is connected between the printhead and the reservoir. A controller and numerous actuators are connected to the drop generator, and adapted to vibrate the drop generator. A fluid pump is connected to the fluid supply line, is operated by the controller, and is adapted to raise the pressure on the drop generator to at least an operating pressure and lower the pressure on the drop generator to a minimal pressure to prevent entanglement of the jets.
    Type: Application
    Filed: May 5, 2004
    Publication date: November 10, 2005
    Inventor: David Huliba
  • Patent number: 6962411
    Abstract: A catcher design is provided wherein vacuum channels are added to both sides of the catcher to remove ink from the face of the catcher and from the eyelid seal. An additional fluid port on the catcher allows the additional vacuum channels to maintain an increased level of vacuum. A restriction on the catcher line balances the fluid flow between the catcher and the additional vacuum channels. A scoop can be machined into the catch pan to remove fluid from below the catcher face. A manifold can be used to maintain a vacuum source for the catcher throat and the additional channels, while pulling the unprinted ink back to the fluid system. Finally, a wider eyelid seal can allow purge fluid used during shutdown to clear the channels.
    Type: Grant
    Filed: January 2, 2003
    Date of Patent: November 8, 2005
    Assignee: Eastman Kodak Company
    Inventors: Kenneth J. West, Jay D. Frazier, David A. Huliba, Bruce A. Bowling, Charles D. Rike
  • Patent number: 6910756
    Abstract: A technique for sealing a printhead of an ink jet printer system on startup, opening the seal to print, and opening further on an arbitrary path for service, is provided for by the present invention. The ink jet printhead has an ink drop generator, a catcher located adjacent to the ink drop generator, and a catcher pan located below the catcher. An eyelid seals ink within the printhead on startup of the printer system. An actuator mechanism transmits movement to the eyelid along a predetermined path, having multiple positions for the eyelid. The eyelid is moved between open and closed positions by means of a dc motor. The open position is defined by the actuator means contacting a print position stop. Shifting the position of the print position stop allows the eyelid to open to a service position.
    Type: Grant
    Filed: September 25, 2002
    Date of Patent: June 28, 2005
    Assignee: Eastman Kodak Company
    Inventors: John N. Blum, Bruce A. Bowling, David A. Huliba, David F. Tunmore
  • Publication number: 20050093916
    Abstract: A shutdown procedure is provided for removing all solvent ink from the printhead of an ink jet printer system that uses volatile ink for printing a shutdown method is provided for an inkjet printer that uses volatile inks for printing. Initially, a colorless flush fluid is provided which readily dissolves the ink. The flush fluid is crossflushed through the drop generator and caused to weep out of the orifices in the drop generator to dissolve and rinse away ink residues from the charge plate and the exterior of the orifice plate. The flush fluid is used to rinse off charging electrodes of the charge plate, the catcher face, and the catcher return line. Fluid crossflushed through the drop generator cleans the interior of the drop generator and cleans the crossflush valve.
    Type: Application
    Filed: December 14, 2004
    Publication date: May 5, 2005
    Inventors: Kenneth West, Meagan Wimmers, Jay Frazier, David Huliba
  • Patent number: 6793327
    Abstract: The use of the lowest all catch voltage for deflecting the charged droplets onto the catcher surface enhances the reliability of the startup sequence for ink jet printers. Going from a state where all of the droplets are hitting in the eyelid seal and catch pan assembly to a state where all of the droplets are deflected and caught on the catcher face will help eliminate the possibility of splatter on the charge plate electrodes and/or the charge short detect level circuitry, ink on top of the eyelid seal, and wicking of ink out of the eyelid.
    Type: Grant
    Filed: September 25, 2002
    Date of Patent: September 21, 2004
    Assignee: Eastman Kodak Company
    Inventor: David A. Huliba
  • Publication number: 20040130590
    Abstract: A catcher design is provided wherein vacuum channels are added to both sides of the catcher to remove ink from the face of the catcher and from the eyelid seal. An additional fluid port on the catcher allows the additional vacuum channels to maintain an increased level of vacuum. A restriction on the catcher line balances the fluid flow between the catcher and the additional vacuum channels. A scoop can be machined into the catch pan to remove fluid from below the catcher face. A manifold can be used to maintain a vacuum source for the catcher throat and the additional channels, while pulling the unprinted ink back to the fluid system. Finally, a wider eyelid seal can allow purge fluid used during shutdown to clear the channels.
    Type: Application
    Filed: January 2, 2003
    Publication date: July 8, 2004
    Applicant: Scitex Digital Printing, Inc.
    Inventors: Kenneth J. West, Jay D. Frazier, David A. Huliba, Bruce A. Bowling, Charles D. Rike
  • Publication number: 20040056933
    Abstract: The use of the lowest all catch voltage for deflecting the charged droplets onto the catcher surface enhances the reliability of the startup sequence for ink jet printers. Going from a state where all of the droplets are hitting in the eyelid seal and catch pan assembly to a state where all of the droplets are deflected and caught on the catcher face will help eliminate the possibility of splatter on the charge plate electrodes and/or the charge short detect level circuitry, ink on top of the eyelid seal, and wicking of ink out of the eyelid.
    Type: Application
    Filed: September 25, 2002
    Publication date: March 25, 2004
    Applicant: Scitex Digital Printing, Inc.
    Inventor: David A. Huliba
  • Publication number: 20040056920
    Abstract: A technique for sealing a printhead of an ink jet printer system on startup, opening the seal to print, and opening further on an arbitrary path for service, is provided for by the present invention. The ink jet printhead has an ink drop generator, a catcher located adjacent to the ink drop generator, and a catcher pan located below the catcher. An eyelid seals ink within the printhead on startup of the printer system. An actuator mechanism transmits movement to the eyelid along a predetermined path, having multiple positions for the eyelid. The eyelid is moved between open and closed positions by means of a dc motor. The open position is defined by the actuator means contacting a print position stop. Shifting the position of the print position stop allows the eyelid to open to a service position.
    Type: Application
    Filed: September 25, 2002
    Publication date: March 25, 2004
    Applicant: Scitex Digital Printing, Inc.
    Inventors: John N. Blum, David A. Huliba, David F. Tunmore, Bruce A. Bowling
  • Patent number: 6688736
    Abstract: An inkjet printer has a catcher and eyelid seal for sealing against the catcher during startup and shutdown. A wicking means is provided for removing excess ink from a fluid channel of the catcher having an associated catcher plate, in an area of the eyelid seal. The wicking means is positioned in an area at a bottom surface of the fluid channel, without bridging a height of the fluid channel, above the catcher plate, and in close proximity to the eyelid seal, while maintaining a consistent pressure at an entrance to the fluid channel.
    Type: Grant
    Filed: September 25, 2002
    Date of Patent: February 10, 2004
    Assignee: Scitex Digital Printing, Inc.
    Inventors: David F. Tunmore, David A. Huliba, Bruce A. Bowling, Robert J. Simon
  • Patent number: 6688733
    Abstract: A method is provided for transitioning from a lower pressure state to a final operating pressure state. Initially, an eyelid is used to divert ink into a fluid channel associated with the catcher assembly. Pressure of the ink is reduced to a low ink pressure level that will allow the ink to be removed by the fluid channel. Pressure of the ink is increased to at least one incremental step, before reaching a final ink operating pressure. A charge voltage is turned on to deflect ink into catch in a time interval short enough to prevent ink backup between the eyelid and the catcher assembly.
    Type: Grant
    Filed: September 25, 2002
    Date of Patent: February 10, 2004
    Assignee: Scitex Digital Printing, Inc.
    Inventor: David A. Huliba
  • Patent number: 6527363
    Abstract: A laminated structure utilizes differential adhesive to achieve high adhesion to a wicking material and low adhesion where removal is desired. The low profile wicking pad is useful in any technology where it is desirable to control excess moisture with a passive device. The wicking device is particularly useful in the field of continuous ink jet printing systems, where the low profile of the device is desirable and the cost reduction makes disposability of the device a reality. In ink jet printing systems, the wicking device improves ink jet printhead performance via ink mist and ink drip elimination.
    Type: Grant
    Filed: July 27, 2001
    Date of Patent: March 4, 2003
    Assignee: Scitex Digital Printing, Inc.
    Inventors: Bruce A. Bowling, David A. Huliba
  • Patent number: 6352339
    Abstract: A system and method are provided for protecting the vacuum pump of an ink jet printer system from the harmful effects of condensation in the vacuum lines, and from the harmful effects of moisture and water in the vacuum lines. This is accomplished by suppressing the condensation and drying the vacuum line walls.
    Type: Grant
    Filed: December 14, 1998
    Date of Patent: March 5, 2002
    Assignee: Scitex Digital Printing, Inc.
    Inventors: John C. Loyd, James D. McCann, Richard T. Enz, David A. Huliba, James A. Katerberg