Patents by Inventor Edward J. Gutman
Edward J. Gutman 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: 6713222Abstract: A process for crosslinking an image comprising applying ultraviolet light to an image comprised of a toner containing an unsaturated resin and colorant.Type: GrantFiled: February 28, 2002Date of Patent: March 30, 2004Assignee: Xerox CorporationInventors: Guerino G. Sacripante, Edward J. Gutman
-
Patent number: 6680153Abstract: A composition comprised of resin and colorant, and wherein the colorant is stabilized with an ultra-violet stabilizer.Type: GrantFiled: May 21, 2002Date of Patent: January 20, 2004Assignee: Xerox CorporationInventors: Scott M. Silence, Edward J. Gutman, Thomas R. Hoffend
-
Publication number: 20030219668Abstract: A composition comprised of resin and colorant, and wherein the colorant is stabilized with an ultra-violet stabilizer.Type: ApplicationFiled: May 21, 2002Publication date: November 27, 2003Applicant: Xerox CorporationInventors: Scott M. Silence, Edward J. Gutman, Thomas R. Hoffend
-
Publication number: 20030162110Abstract: A process for crosslinking an image comprising applying ultraviolet light to an image comprised of a toner containing an unsaturated resin and colorant.Type: ApplicationFiled: February 28, 2002Publication date: August 28, 2003Applicant: Xerox CorporationInventors: Guerino G. Sacripante, Edward J. Gutman
-
Publication number: 20030017406Abstract: An emulsion aggregation toner particularly adapted for use in hybrid scavengeless development includes toner particles of polymer binder, colorant and a surface additive package containing at least one additive negatively chargeable to a carrier and at least one additive positively chargeable to the carrier. The toner is able to exhibit high stable triboelectric charging ability, and substantially eliminates charge through and slow admix in a developer employing the toner.Type: ApplicationFiled: July 10, 2001Publication date: January 23, 2003Applicant: Xerox CorporationInventors: Edward J. Gutman, Bernard Grushkin, John G. Ruhland
-
Patent number: 6503677Abstract: An emulsion aggregation toner particularly adapted for use in hybrid scavengeless development includes toner particles of polymer binder, colorant and a surface additive package containing at least one additive negatively chargeable to a carrier and at least one additive positively chargeable to the carrier. The toner is able to exhibit high stable triboelectric charging ability, and substantially eliminates charge through and slow admix in a developer employing the toner.Type: GrantFiled: July 10, 2001Date of Patent: January 7, 2003Assignee: Xerox CorporationInventors: Edward J. Gutman, Bernard Grushkin, John G. Ruhland
-
Patent number: 6416916Abstract: A toner of toner particles containing at least one binder, at least one color ant, and an external additive package comprised of zinc stearate and at. least one of silicon dioxide or titanium dioxide, wherein the amount of zinc stearate is limited to about 0.10 percent by weight or less of the toner. It has been surprisingly found that when the amount of zinc stearate is so limited, a developer formed from the toner exhibits excellent triboelectric charging and stability and excellent developer flow. When the developer is used in a magnetic brush development system, consistent, high quality copy images are formed substantially without any depletion defects over time.Type: GrantFiled: September 25, 2000Date of Patent: July 9, 2002Assignee: Xerox CorporationInventors: Scott M. Silence, Edward J. Gutman, James M. Proper, Frank O. Reitze, Brian S. Giannetto, Brian E. Moore, Joo T. Chung, James G. Stenzel, Jeffrey L. DeBarr, Morris M. DeYoung, Jr.
-
Patent number: 6406822Abstract: At least three differently colored toners, designed for use together in forming a color image in an image developing device, have substantially the same melt flow index value. By substantially matching the melt flow index values of at least three toners of a set of toners, it has been found that the resultant color image has an overall excellent image quality, i.e., an excellent overall gloss level without any gloss banding.Type: GrantFiled: September 29, 2000Date of Patent: June 18, 2002Assignee: Xerox CorporationInventors: Scott M. Silence, Joo T. Chung, James M. Proper, Edward J. Gutman, James G. Stenzel, Kip L. Jugle, Yelena Shapiro, James A. Winters, Maria M. Barden, John S. Walters
-
Patent number: 6379856Abstract: A toner composition comprised of binder, colorant, and a surface additive of a coated silica and wherein said silica possesses a BET surface area, in m2/g of from about 35 to about 65, a bulk density, in grams/liter, of from about 40 to about 60, and and wherein the size diameter determined from the BET measurement is from about 20 to about 100 nanometers.Type: GrantFiled: February 2, 2001Date of Patent: April 30, 2002Assignee: Xerox CorporationInventors: Jeffrey H. Sokol, Edward J. Gutman
-
Patent number: 6319647Abstract: A toner of toner particles containing at least one binder, at least one colorant, and preferably one or more external additives is advantageously formed into a developer and used in a magnetic brush development system to achieve consistent, high quality copy images. The toner particles, following triboelectric contact with carrier particles, exhibit a charge per particle diameter (Q/D) of from 0.6 to 0.9 fC/&mgr;m and a triboelectric charge of from 20 to 25 &mgr;C/g. The toner particles preferably have an average particle diameter of from 7.8 to 8.3 microns. The toner is combined with carrier particles to achieve a developer, the carrier particles preferably having an average diameter of from 45 to 55 microns and including a core of ferrite substantially free of copper and zinc coated with a coating comprising a polyvinylidenefluoride polymer or copolymer and a polymethyl methacrylate polymer or copolymer.Type: GrantFiled: March 7, 2000Date of Patent: November 20, 2001Assignee: Xerox CorporationInventors: Edward J. Gutman, Barbara M. Ferguson
-
Publication number: 20010005568Abstract: A toner composition comprised of binder, colorant, and a surface additive of a coated silica and wherein said silica possesses a BET surface area, in m2/g of from about 35 to about 65, a bulk density, in grams/liter, of from about 40 to about 60, and and wherein the size diameter determined from the BET measurement is from about 20 to about 100 nanometers.Type: ApplicationFiled: February 2, 2001Publication date: June 28, 2001Applicant: Xerox CorporationInventors: Jeffrey H. Sokol, Edward J. Gutman
-
Patent number: 6214507Abstract: A toner composition comprised of binder, colorant, and a surface additive of a coated silica and wherein said silica possesses a BET surface area, in m2/g of from about 35 to about 65, a bulk density, in grams/liter, of from about 40 to about 60, and wherein the size diameter determined from the BET measurement is from about 20 to about 100 nanometers.Type: GrantFiled: August 11, 1998Date of Patent: April 10, 2001Assignee: Xerox CorporationInventors: Jeffrey H. Sokol, Edward J. Gutman
-
Patent number: 6162573Abstract: A process for producing a color toner or developer composition includes selecting at least two different color toners, in the form of toner pellets, mixing the color toner pellets to form a mixture, and grinding the color toner pellets to produce a final powdered toner composition of a specific customer selectable color. The powdered color toner composition may then be mixed with additional additives and/or developer carrier particles to produce a developer composition.Type: GrantFiled: November 30, 1994Date of Patent: December 19, 2000Assignee: Xerox CorporationInventors: Michael L. Grande, Edward J. Gutman, James J. Franzen
-
Patent number: 6087059Abstract: A toner comprised of resin, colorant and a surface additive mixture comprised of two coated silicas, and a coated metal oxide.Type: GrantFiled: June 28, 1999Date of Patent: July 11, 2000Assignee: Xerox CorporationInventors: Michael J. Duggan, K. Derek Henderson, Amy L. Stamp, Scott M. Silence, William H. Hollenbaugh, Jr., Edward J. Gutman, Bernard Grushkin, John G. Ruhland
-
Patent number: 5787329Abstract: An apparatus and process for reducing accumulation of toner from the surface of an electrode member in a development unit of an electrostatographic printing apparatus by providing an organic coating on at least a portion of the electrode member.Type: GrantFiled: April 29, 1997Date of Patent: July 28, 1998Assignee: Xerox CorporationInventors: John R. Laing, Edward J. Gutman, J. Stephen Kittelberger, John G. VanDusen, Suresh K. Ahuja, Merlin E. Scharfe, Richard L. Schank, Mark J. Hirsch, Santokh S. Badesha, Arnold W. Henry, George J. Heeks
-
Patent number: 5761587Abstract: An apparatus for reducing accumulation of toner from the surface of an electrode member in a development unit of an electrostatographic printing apparatus which includes providing a low surface energy coating on at least a portion of the electrode member.Type: GrantFiled: April 29, 1997Date of Patent: June 2, 1998Assignee: Xerox CorporationInventors: John R. Laing, Edward J. Gutman, J. Stephen Kittelberger, John G. VanDusen, Suresh K. Ahuja, Merlin E. Scharfe, Richard L. Schank, Mark J. Hirsch, Santokh S. Badesha, Arnold W. Henry, George J. Heeks
-
Patent number: 5336579Abstract: A developer composition containing color toner particles, bare carrier core particles and coated carrier particles.Type: GrantFiled: September 3, 1992Date of Patent: August 9, 1994Assignee: Xerox CorporationInventors: Charles D. Zimmer, Edward J. Gutman, Mark D. Ballou
-
Patent number: 5196803Abstract: An apparatus and method for determining both the breakdown voltage and the conductivity of a particulate material, such as a developer material, is provided. In a preferred embodiment, the apparatus for determining breakdown voltage comprises a breakdown cell for storing a preselected quantity of the particulate material and a voltage breakdown ("VB") autometer, the VB autometer being adapted to apply a first voltage across at least portions of the preselected quantity of the particulate material. The VB autometer is capable of progressively varying the magnitude of the first voltage. A measuring circuit, for measuring a second voltage, is coupled to the voltage breakdown cell. When the second voltage substantially equals a preselected reference voltage, the first voltage substantially equals the breakdown voltage of the particulate material.Type: GrantFiled: August 1, 1991Date of Patent: March 23, 1993Assignee: Xerox CorporationInventors: Michael Cellini, Jr., Rudolph Forgensi, Edward J. Gutman, Kallis H. Mannik, Robert J. Turchetti, Donald H. Wood, Morris M. DeYoung, Jr.
-
Patent number: 5175590Abstract: A printing machine of the type including an image receiving member having a charge retentive surface with a first developed image being disposed in a first zone and a second developed image being disposed in a second zone is provided.Type: GrantFiled: May 21, 1992Date of Patent: December 29, 1992Assignee: Xerox CorporationInventors: Neil A. Frankel, Edward J. Gutman, Larry G. Hogestyn
-
Patent number: 5171653Abstract: Disclosed is a developer composition which consists essentially of a toner consisting essentially of a resin, a colorant, and colloidal silica external additive particles and a carrier consisting essentially of a core, an optional coating on the core, and an external additive selected from the group consisting of metal salts of fatty acids, linear polymeric alcohols comprising a fully saturated hydrocarbon backbone with at least about 80 percent of the polymeric chains terminated at one chain end with a hydroxyl group, polyethylene waxes with a molecular weight of from about 300 to about 2,000 polypropylene waxes with a molecular weight of from about 300 to about 3,000, and mixtures thereof. Also disclosed are processes for using the aforementioned developer in a tri-level development process.Type: GrantFiled: September 6, 1991Date of Patent: December 15, 1992Assignee: Xerox CorporationInventors: Don B. Jugle, Michael L. Grande, Edward J. Gutman, Douglas A. Lundy, Charles D. Zimmer