Patents by Inventor Eric Joseph Johnson

Eric Joseph Johnson 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: 6189995
    Abstract: A replaceable inkjet printhead service module is provided for each separate inkjet printhead. When the printhead for a particular color ink such as cyan has reached the end of its life cycle and requires replacement, the corresponding printhead service module can also be replaced. The printhead service module includes a handle to facilitate manual mounting in a service station carriage which includes identical individual spring-loaded slots with datum guides for securely holding the service module. The service station carriage moves from a user-accessible position for mounting/removing the service module, to various other printhead servicing positions in the path of the printhead carriage.
    Type: Grant
    Filed: March 4, 1997
    Date of Patent: February 20, 2001
    Assignee: Hewlett-Packard Company
    Inventors: Brian Canfield, Jesus Garcia, Joan Carles Vives, Martin Urrutia, Eric Joseph Johnson
  • Patent number: 6139135
    Abstract: An inkjet printing system having a replaceable set of ink-related components which are installed together and replaced together as a single ink delivery system for each different color of ink. The set includes an ink printhead cartridge with an inlet port, an ink supply module, and a printhead service module, each of which is manually mountable by a user onto an inkjet printer. The ink supply module contains enough ink to completely replenish an entire printhead reservoir several times before the expected useful life of the printhead cartridge has expired, at which time a user can replace the entire set of ink-related components for a particular color. Similarly, the printhead service module is designed for reliable performance for the expected useful life of the printhead cartridge. This system enables the entire ink delivery system to be replaced for different printing needs, such as replacing indoor dye-based inks with outdoor pigment based inks.
    Type: Grant
    Filed: March 3, 1997
    Date of Patent: October 31, 2000
    Assignee: Hewlett-Packard Company
    Inventors: Rick Becker, Brian Canfield, Jesus Garcia, Doug Watson, Don Boutin, Eric Joseph Johnson, Robert Giles, Mark E. Young, Elizabeth Zapata, Felix Ruiz
  • Patent number: 5914734
    Abstract: A wet-wiping printhead cleaning system including a source of treatment fluid further including a treatment fluid reservoir and a treatment fluid transfer element adapted to transfer treatment fluid from the reservoir to at least one of the two elements involved in wiping the printhead, the two such elements consisting of the printhead and the wiper, the transfer element thereby acts as an applicator placing treatment fluid onto said at least one element, the source of treatment fluid not contacting said one element directly, and the treatment fluid then is available to assist in cleaning the printhead as it is wiped by the wiper, removing accumulated dried ink solids and other debris, the treatment fluid lubricating the wiper so as to lengthen wiper service life and enhance wiping performance, as well as acting to render such accumulations more removable by wiping.
    Type: Grant
    Filed: November 13, 1996
    Date of Patent: June 22, 1999
    Assignee: Hewlett-Packard Company
    Inventors: Catherine Rotering, John H. Dion, James A. Harvey, Eric Joseph Johnson, James P. Kearns, Donald L. Michael, Alan Shibata
  • Patent number: 5907335
    Abstract: A wet-wiping printhead cleaning system including a treatment fluid applicator placing treatment fluid on at least one of two elements involved in wiping, said two elements being a printhead orifice plate surface and a wiper, the system being so configured that treatment fluid is applied before wiping the printhead by projecting treatment fluid onto at least one element through the atmosphere, thereby avoiding direct contact between the applicator and said one element, the treatment fluid being placed so as to be available to assist in wiping a portion of the printhead orifice plate where the nozzle orifices are located to remove debris that may have accumulated, the treatment fluid lubricating the wiper so as to lengthen wiper service life and enhance wiping performance, as well as acting to render such accumulations more removable by wiping, the source of treatment fluid being uncontaminated by contact with either the printhead or the wiper.
    Type: Grant
    Filed: November 13, 1996
    Date of Patent: May 25, 1999
    Assignee: Hewlett-Packard Company
    Inventors: Eric Joseph Johnson, Eric Mattis, Donald L. Michael
  • Patent number: 5905514
    Abstract: A wet-wiping printhead cleaning system for inkjet printer incorporating a wiper for wiping the printhead including a treatment fluid applicator configured for placing treatment fluid onto at least one element of the printhead and wiper elements involved in wiping the printhead orifice plate surface, the treatment fluid being placed on said at least one element by direct contact of the applicator, subsequently the wiper wipes the printhead, the treatment being available to enhance cleaning effectiveness, the treatment fluid lubricating the wiper so as to lengthen wiper service life and enhance wiping performance, as well as acting to render unwanted accumulations on the printhead more removable by wiping.
    Type: Grant
    Filed: November 13, 1996
    Date of Patent: May 18, 1999
    Assignee: Hewlett-Packard Company
    Inventors: W. Wistar Rhoads, Eric Joseph Johnson, Steve Castle, Frank Drogo, John Ferraro, Paul E. Martinson, Eric Mattis
  • Patent number: D430600
    Type: Grant
    Filed: February 18, 1999
    Date of Patent: September 5, 2000
    Assignee: Hewlett-Packard Company
    Inventors: Antoni Murcia, Eric Joseph Johnson, Xavier Bruch