Patents by Inventor Brian P. Teschendorf
Brian P. Teschendorf 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).
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Patent number: 7432033Abstract: Methods of printing with a liquid electrophotographic toner composition prepared within an electrophotgraphic printing apparatus are provided, wherein a polymeric binder comprising at least one amphipathic copolymer comprising one or more S material portions and one or more D material portions is first prepared in a reaction solvent, wherein the reaction solvent comprises less than about 10% aromatic components by weight and has a Kauri-Butanol number less than about 30 mL. Toner particles are then formulated in the reaction solvent and dried. The dried toner particles are then redispersed in a carrier liquid.Type: GrantFiled: October 31, 2004Date of Patent: October 7, 2008Assignee: Samsung Electronics Co., Ltd.Inventors: Hsin Hsin Chou, Brian P. Teschendorf, James A. Baker
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Patent number: 7433635Abstract: A method of producing an image on a final image receptor from image data in a multiple pass electrophotographic system is provided. The method includes the steps of applying transfer assist material to an intermediate transfer member and providing at least one development unit including a photoreceptive element and charged toner particles. During each complete processing cycle of an intermediate transfer member, a toned image is created and transferred to the intermediate transfer member by application of a bias. In multiple processing cycles of the intermediate transfer member, the transfer assist material and the at least one toned image thereby form a composite image layer on the intermediate transfer member. The method further includes contacting the composite image layer with a final image receptor while applying a bias that is sufficiently strong to transfer at least a portion of the composite image layer to the final image receptor.Type: GrantFiled: June 30, 2004Date of Patent: October 7, 2008Assignee: Samsung Electronics Co., Ltd.Inventors: Hsin Hsin Chou, Brian P. Teschendorf, Manuel Lozada, Charles W. Simpson, Truman F. Kellie, A. Kristine Fordahl, James A. Baker
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Patent number: 7433636Abstract: A method of producing an image on a final image receptor in a single pass electrophotographic system is provided. The method includes the steps of providing at least one toner development unit including a photoreceptive element and charged toner particles, and creating a toned image on the photoreceptive element that is transferred to an intermediate transfer member. The method further includes providing a transfer assist material development unit for applying a transfer assist material to at least a portion of the toned image to form a complete image layer on the intermediate transfer member, wherein the complete image layer is formed in a single pass of the intermediate transfer member. The method also includes contacting the complete image layer with a final image receptor while applying a bias that is sufficiently strong to transfer at least a portion of the complete image layer to the final image receptor.Type: GrantFiled: June 30, 2004Date of Patent: October 7, 2008Assignee: Samsung Electronics Co., Ltd.Inventors: Brian P. Teschendorf, Hsin Hsin Chou, Charles W. Simpson, Manuel Lozada, Truman F. Kellie, James A. Baker
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Patent number: 7294441Abstract: A method of producing a composite image on a final image receptor from image data in a single pass electrophotographic system is provided. The method includes steps for applying liquid transfer assist material comprising charged particles of transfer assist material to at least a portion of an element of the electrophotographic system, along with charged toner particles, in order to provide a composite image layer on a final image receptor in a single pass of a photoreceptive element through transfer of the composite image layer from another element in the system.Type: GrantFiled: June 30, 2004Date of Patent: November 13, 2007Assignee: Samsung Electronics Co., Ltd.Inventors: James A. Baker, Truman F. Kellie, Gay Herman, Brian P. Teschendorf, A. Kristine Fordahl
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Publication number: 20040240897Abstract: A prospective liquid toner is evaluated for potential electrostatic imaging performance. A drop of the prospective toner is applied on a flat surface, the prospective toner is electrically plated onto an electrically resistive compliant roller. The roller carries the plated liquid toner and applied the plated toner to a substrate. The plated toner is transferred to the substrate and the transferred toner qualities such as least length, width, and shape are compared to standards expected from a liquid toner of acceptable performance characteristics.Type: ApplicationFiled: May 30, 2003Publication date: December 2, 2004Applicant: SAMSUNG Electronics Co. LtdInventors: Hsin Hsin Chou, Truman Frank Kellie, William D. Edwards, Brian P. Teschendorf
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Patent number: 6796197Abstract: A testing procedure and method is provided for assessing the quality or acceptability of performance of individual liquid ink electrostatic toners on individual receptor surfaces. An approximately standard drop of the individual liquid toner is placed on the receptor to be tested. The drop is pressed onto the receptor and spread on the surface of the receptor (preferably before the drop has had time to partially evaporate or to have the liquid in the drop absorb or naturally spread on the receptor surface) under controlled conditions. The characteristics of the spread drop on the receptor surface are measured, and the characteristics are compared to parameters defining the characteristics expected from a liquid toner that define acceptable performance between toner and receptor. In this manner the relative performance of individual toners on individual receptor surfaces can be evaluated independent of electrostatic effects.Type: GrantFiled: May 30, 2003Date of Patent: September 28, 2004Assignee: Samsung Electronics Co., Ltd.Inventors: Hsin Hsin Chou, Truman Frank Kellie, William D. Edwards, Brian P. Teschendorf
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Patent number: 6647234Abstract: This invention relates to a developer storage and delivery system for liquid electrophotography containing: a) a container having an open end; b) a developer inside said container wherein said developer has a viscosity greater than 10 pascal second; and c) a heater near said open end wherein said heater lower the viscosity of said developer to less than 0.01 pascal second.Type: GrantFiled: April 19, 2002Date of Patent: November 11, 2003Assignee: Samsung Electronics Co., Ltd.Inventors: Gay L. Herman, James A. Baker, Eric D. Dalzell, Manuel Lozada, Brian P. Teschendorf
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Publication number: 20030072589Abstract: This invention relates to a developer storage and delivery system for liquid electrophotography containing:Type: ApplicationFiled: April 19, 2002Publication date: April 17, 2003Applicant: SamsungInventors: Gay L. Herman, James A. Baker, Eric D. Dalzell, Manuel Lozada, Brian P. Teschendorf
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Patent number: 5805963Abstract: An imaging system and method incorporate an apparatus and method for cleaning developer liquid from an imaging substrate such as a photoreceptor.Type: GrantFiled: June 16, 1997Date of Patent: September 8, 1998Assignee: Minnesota Mining and Manufacturing CompanyInventors: Brian P. Teschendorf, W. Blake Kolb, Thomas M. Milbourn
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Patent number: 5781834Abstract: An imaging system and method incorporate an apparatus and method for cleaning developer liquid from an imaging substrate such as a photoreceptor.Type: GrantFiled: August 26, 1997Date of Patent: July 14, 1998Assignee: Minnesota Mining and Manufacturing CompanyInventors: Brian P. Teschendorf, W. Blake Kolb, Thomas M. Milbourn
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Patent number: 5758236Abstract: A development apparatus for developing a latent electrostatic image on an imaging substrate in a liquid electrographic imaging system includes a cleaning roller for removing back-plated developer from a development device such as a development roller, and a squeegee apparatus for.sub.-- removing both "drip-line" developer liquid and "wrap-around" developer liquid from the imaging substrate. The squeegee apparatus may include a squeegee roller having a crowned profile and a loading mechanism configured to achieve a uniform loading force across a pressure nip formed between the squeegee roller and the imaging substrate. The cleaning roller may include a fiber cleaning media and fluid delivery means for flushing back-plated developer from the cleaning media. The development apparatus also may include means for spacing the development apparatus relative to the imaging substrate without contacting the imaging substrate, thereby avoiding disruption of the motion quality of the imaging substrate.Type: GrantFiled: September 25, 1996Date of Patent: May 26, 1998Assignee: Minnesota Mining and Manufacturing CompanyInventors: Brian P. Teschendorf, Truman F. Kellie, Edward J. Moe, W. Blake Kolb, Joseph T. Brophy, Thomas M. Milbourn, Arthur V. Lang, Donald H. Larson, Alberto Goenaga, Steven C. Jensen, John D. Watson
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Patent number: 5713068Abstract: An apparatus and method for removing excess developer liquid from an imaging substrate make use of a squeegee roller, and a mechanism for loading the squeegee roller against the imaging substrate. The squeegee roller removes the excess developer liquid from the imaging substrate at an upstream side of the squeegee roller relative to a direction of movement of the imaging substrate. A portion of the excess developer liquid can pass to a downstream side of the squeegee roller, however, and be transferred from the squeegee roller to the imaging substrate. A second developer liquid removal mechanism is provided to remove from the imaging substrate the portion of the excess developer liquid transferred from the squeegee roller. The second developer liquid removal mechanism may include a second squeegee roller mounted at a position adjacent the downstream side of the first squeegee roller.Type: GrantFiled: March 4, 1997Date of Patent: January 27, 1998Assignee: Minnesota Mining and Manufacturing CompanyInventors: Brian P. Teschendorf, Joseph T. Brophy, W. Blake Kolb, Alberto Goenaga
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Patent number: 5650253Abstract: Method and apparatus for producing an image on plain paper from image data using a photoreceptor. An image-wise distribution of charges is produced on the photoreceptor corresponding to the image data. A liquid ink having solid charged pigmented particles, the liquid ink having an effective glass transition temperature of less than 25 degrees Celsius is applied to the photoreceptor forming an image-wise distribution of the pigmented particles on the photoreceptor to form the image. The liquid ink has greater than seventy-five percent by volume fraction of solids in the image. A film forming means is positioned against the photoreceptor immediately following the application means to dry the image of the liquid ink to film forming within 0.5 seconds. The image is dried on the photoreceptor. The image is then transferred to an elastomeric transfer roller which forms a first transfer nip under pressure with the photoreceptor.Type: GrantFiled: September 29, 1995Date of Patent: July 22, 1997Assignee: Minnesota Mining and Manufacturing CompanyInventors: James A. Baker, Truman F. Kellie, Edward J. Woo, Kent E. Emerson, Wu-Shyong Li, Gaye K. Lehman, Gay L. Herman, Brian P. Teschendorf, Claire A. Jalbert, Valdis Mikelsons
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Patent number: 5576815Abstract: A development apparatus for developing a latent electrostatic image on an imaging substrate in a liquid electrographic imaging system includes a cleaning roller for removing back-plated developer from a development device such as a development roller, and a squeegee apparatus for removing both "drip-line" developer liquid and "wrap-around" developer liquid from the imaging substrate. The squeegee apparatus may include a squeegee roller having a crowned profile and a loading mechanism configured to achieve a uniform loading force across a pressure nip formed between the squeegee roller and the imaging substrate. The cleaning roller may include a fiber cleaning media and fluid delivery means for flushing back-plated developer from the cleaning media. The development apparatus also may include means for spacing the development apparatus relative to the imaging substrate without contacting the imaging substrate, thereby avoiding disruption of the motion quality of the imaging substrate.Type: GrantFiled: September 29, 1995Date of Patent: November 19, 1996Assignee: Minnesota Mining and Manufacturing CompanyInventors: Brian P. Teschendorf, Truman F. Kellie, Edward J. Moe, W. Blake Kolb, Joseph T. Brophy, Thomas M. Milbourn, Arthur V. Lang, Donald H. Larson, Alberto Goenaga, Steven C. Jensen, John D. Watson