Patents by Inventor George G. Lunde

George G. Lunde 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: 6041516
    Abstract: An article for cooling an imaging material which has been heated to a first temperature by a thermal processor. The article includes a first cooling section on which the imaging material rides after the imaging material exits the thermal processor. The first cooling section is at a lower temperature than the first temperature. The first cooling section has a curved shape such that the imaging material is curved when riding on and being cooled by the first cooling section.
    Type: Grant
    Filed: September 29, 1998
    Date of Patent: March 28, 2000
    Assignee: Minnesota Mining & Manufacturing
    Inventors: Duane A. Preszler, Kent R. Struble, David J. McDaniel, George G. Lunde
  • Patent number: 5869806
    Abstract: A thermal processor and method for using the same which is particularly useful for developing a sheet of imaging material, such as photothermographic film. The thermal processor including means for heating the imaging material which include a plurality of heated surfaces within the thermal processor. The thermal processor also includes means for transporting the imaging material through the thermal processor and means for bending the imaging material a plurality of times to have a plurality of curvatures and for positioning the imaging material adjacent to the plurality of heated surfaces when the imaging material is heated by the heating means.
    Type: Grant
    Filed: February 2, 1996
    Date of Patent: February 9, 1999
    Assignee: Imation Corp.
    Inventors: Kent R. Struble, David J. McDaniel, Duane A. Preszler, George G. Lunde
  • Patent number: 5849388
    Abstract: An article for cooling an imaging material which has been heated to a first temperature by a thermal processor. The article includes a first cooling section on which the imaging material rides after the imaging material exits the thermal processor. The first cooling section is at a lower temperature than the first temperature. The first cooling section has a curved shape such that the imaging material is curved when riding on and being cooled by the first cooling section.
    Type: Grant
    Filed: February 2, 1996
    Date of Patent: December 15, 1998
    Assignee: Imation Corp.
    Inventors: Duane A. Preszler, Kent R. Struble, David J. McDaniel, George G. Lunde
  • Patent number: 4994860
    Abstract: A liquid color toners handling network for an electrographic printer includes a plurality of developing modules. Each developing module in turn includes a toner handling system having a toner supply reservoir with a toner pump coupled to a reservoir outlet. A T-connector is coupled to the toner pump and is further coupled to a toner supply reservoir inlet. A three-way ball valve is coupled in series with the T-connector and an inlet of the developing module. An additional fluid line couples an outlet of the developing module back to the three-way ball valve. This arrangement allows toner to be trapped between the three-way ball valve and developing module inlet so that toner can be supplied to the developing module in an instant-on manner. The handling network further includes a toner carrier pumping module that can be coupled to any one of the supply reservoirs and a toner concentrate supply container associated with each supply reservoir.
    Type: Grant
    Filed: April 10, 1990
    Date of Patent: February 19, 1991
    Assignee: Minnesota Mining and Manufacturing
    Inventors: George G. Lunde, Gregory L. Zwadlo, Larry J. Bresina
  • Patent number: 4878090
    Abstract: A development apparatus in association with an electrostatic record member is provided with a shroud surrounding a development electrode and a toner return including a vacuum source to increase circulation of the toner. The vacuum source also draws air around the shroud to strike the record member and remove excess toner.
    Type: Grant
    Filed: August 23, 1988
    Date of Patent: October 31, 1989
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: George G. Lunde
  • Patent number: 4649402
    Abstract: An electrographic stylus recording apparatus producing a toner powder image on a receptor belt wherein non-imaging toner powder is collected at a cylindrical sleeve located downstream from the stylus array and is subsequently returned from the cylindrical sleeve to the upstream side of the stylus array by depositing toner powder from the cylindrical sleeve onto the receptor belt by adjustment of the toner powder on the cylindrical sleeve relative to the space between the cylindrical sleeve plus the application of a d.c. voltage to the cylindrical sleeve.
    Type: Grant
    Filed: March 7, 1986
    Date of Patent: March 10, 1987
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: George G. Lunde, Earl K. Hoyne, Charles K. Nordeen
  • Patent number: 3946402
    Abstract: A toner applicator for delivering an optimum amount of toner powder to a recording electrode of an electrographic recording system whereby a portion of said toner may be electrographically deposited on a recording medium in the form of toner images. The toner is fed from a toner reservoir onto the recording medium in a relatively uniform layer by a toner supply means that is adjustable to vary the thickness of the toner layer deposited on the recording medium. The toner layer is then transported on the recording medium to the recording electrode, and a magnetic field is induced in the recording electrode to draw the toner layer into a position bridging between the recording electrode and the recording medium for being redeposited on the recording medium in the form of toner images.
    Type: Grant
    Filed: May 28, 1974
    Date of Patent: March 23, 1976
    Assignee: Minnesota Mining & Manufacturing Company
    Inventor: George G. Lunde