Patents by Inventor Sandra J. Gardner
Sandra J. Gardner 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: 8691324Abstract: Disclosed herein are solvent free, dry coating processes for applying a layered material such as graphene, nanoplate graphite, etc., to a substrate. The applied layered material is devoid of any dispersant and substantially uniform in thickness. Generally, a layered material precursor composition is mixed with a milling medium so that the milling medium is coated with the layered material. The substrate is then contacted with the coated milling medium. The layered material on the milling medium transfers to the substrate to form a coating on the substrate. Such processes may be especially useful for applying conductive films onto a polymeric substrate without the need for additives such as a surfactant or a polymeric binder.Type: GrantFiled: April 3, 2012Date of Patent: April 8, 2014Assignee: Xerox CorporationInventors: Yiliang Wu, Sandra J. Gardner, Ping Liu, Nan-Xing Hu
-
Patent number: 8690309Abstract: A process including disposing at least one phase separation ink in an imagewise fashion onto a final image receiving substrate to form an ink image, wherein disposing is at a first temperature at which the at least one phase separation ink is in a molten, unseparated state; cooling the ink image to a second temperature sufficient to initiate crystallization of at least one component of the at least one phase separation ink, wherein at the second temperature the at least one phase separation ink comprises a crystalline phase and an amorphous phase; wherein the amorphous phase of the at least one phase separation ink substantially penetrates into the final image receiving substrate; and wherein the crystalline phase of the at least one phase separation ink substantially remains on the surface of the final image receiving substrate; applying pressure to the ink image on the final image receiving substrate; and allowing the ink to complete crystallization.Type: GrantFiled: April 27, 2011Date of Patent: April 8, 2014Assignee: Xerox CorporationInventors: Paul McConville, Joanne L. Lee, Peter G. Odell, Sandra J. Gardner
-
Patent number: 8647712Abstract: The present teachings describe a process that includes obtaining a composition of particles comprising fluorine containing particles and aerogel particles. The composition is mixed at a resonant frequency of a mixing system containing the composition. The composition is powder coated onto a substrate and cured to form a release layer on the substrate.Type: GrantFiled: April 17, 2012Date of Patent: February 11, 2014Assignee: Xerox CorporationInventors: Carolyn P. Moorlag, Qi Zhang, Suxia Yang, Yu Qi, Brynn M. Dooley, Sandra J. Gardner
-
Patent number: 8615188Abstract: The present teachings provide a fusing method and system of tuning gloss level on a copy substrate. The method includes obtaining an image forming apparatus for forming images on a recording medium including a charge-retentive surface to receive an electrostatic latent image thereon. The method includes applying toner to the charge-retentive surface to develop an electrostatic latent image to form a developed image on the charge-retentive surface. The developed image is transferred from the charge retentive surface to a copy substrate. The toner images are fused to a surface of the copy substrate. The gloss is adjusted on the copy substrate by providing a fuser member having a surface layer a fluoroplastic matrix having dispersed therein aerogel particles wherein the greater a weight percent of the aerogel particles in the fluoroplastic matrix the lower the gloss.Type: GrantFiled: March 22, 2011Date of Patent: December 24, 2013Assignee: Xerox CorporationInventors: Carolyn P. Moorlag, Edward G. Zwartz, Gordon Sisler, Kurt I. Halfyard, Yu Qi, Sandra J. Gardner, T. Brian McAneney, Nan-Xing Hu
-
Publication number: 20130274376Abstract: The present teachings disclose a surface coating composition. The surface coating composition includes fluorine containing particles, aerogel particles and positive tribocharging particles. The surface coating is useful as the release layer for fuser members.Type: ApplicationFiled: April 17, 2012Publication date: October 17, 2013Applicant: XEROX CORPORATIONInventors: Carolyn P. Moorlag, Suxia Yang, Yu Qi, Qi Zhang, Brynn M. Dooley, Sandra J. Gardner
-
Publication number: 20130270179Abstract: There is provided a membrane that includes a plurality of polyimide fibers encased in a fluoropolymer sheath, the plurality of fibers having a diameter of from about 10 nm to about 50 microns, wherein the plurality of fibers form a permeable non-woven mat. A method of manufacturing the membrane is provided.Type: ApplicationFiled: April 11, 2012Publication date: October 17, 2013Applicant: XEROX CORPORATIONInventors: Yu Qi, Sandra J. Gardner, Qi Zhang, Carolyn P. Moorlag, Brynn M. Dooley, Guiqin Song, Nicoleta D. Mihai, Nan-Xing Hu
-
Publication number: 20130273243Abstract: The present teachings describe a process that includes obtaining a composition of particles comprising fluorine containing particles and aerogel particles. The composition is mixed at a resonant frequency of a mixing system containing the composition. The composition is powder coated onto a substrate and cured to form a release layer on the substrate.Type: ApplicationFiled: April 17, 2012Publication date: October 17, 2013Applicant: XEROX CORPORATIONInventors: Carolyn P. Moorlag, Qi Zhang, Suxia Yang, Yu Qi, Brynn M. Dooley, Sandra J. Gardner
-
Publication number: 20130264188Abstract: The present teachings describe a process for converting a HOGaPc Type I polymorph to the HOGaPc Type V polymorph. The process includes obtaining a slurry comprising hydroxy gallium phthalocyanine (HOGaPc) Type I polymorph. The slurry is mixed at a resonant frequency of the slurry by applying a low frequency acoustic field for a time sufficient to convert the HOGaPc Type I polymorph to the HOGaPc Type V polymorph.Type: ApplicationFiled: April 4, 2012Publication date: October 10, 2013Applicant: XEROX CORPORATIONInventors: Sarah J. Robinson, Marko Saban, Yulin Wang, Sandra J. Gardner, Cuong Vong
-
Publication number: 20130260094Abstract: Disclosed herein are substrates which have been dry coated with a layered material. Generally, a layered material precursor composition is mixed with a milling medium so that the milling medium is coated with the layered material. The substrate is then contacted with the coated milling medium. The layered material on the milling medium transfers to the substrate to form a coating on the substrate. In particular, conductive films can be formed on a substrate without the need for additives such as a surfactant or a polymeric binder.Type: ApplicationFiled: April 3, 2012Publication date: October 3, 2013Applicant: Xerox CorporationInventors: Yiliang Wu, Sandra J. Gardner, Ping Liu, Nan-Xing Hu
-
Publication number: 20130260136Abstract: Disclosed herein are solvent free, dry coating processes for applying a layered material such as graphene, nanoplate graphite, etc., to a substrate. The applied layered material is devoid of any dispersant and substantially uniform in thickness. Generally, a layered material precursor composition is mixed with a milling medium so that the milling medium is coated with the layered material. The substrate is then contacted with the coated milling medium. The layered material on the milling medium transfers to the substrate to form a coating on the substrate. Such processes may be especially useful for applying conductive films onto a polymeric substrate without the need for additives such as a surfactant or a polymeric binder.Type: ApplicationFiled: April 3, 2012Publication date: October 3, 2013Applicant: Xerox CorporationInventors: Yiliang Wu, Sandra J. Gardner, Ping Liu, Nan-Xing Hu
-
Patent number: 8518476Abstract: Various embodiments provide materials and methods for forming a fluoroplastic coating layer from a powder mixture including a leveling agent and/or a transient binder material to improve the powder coating quality, wherein the powder mixture can further include a plurality of fluoroplastic powder and a plurality of aerogel particles.Type: GrantFiled: November 3, 2011Date of Patent: August 27, 2013Assignee: Xerox CorporationInventors: Qi Zhang, Yu Qi, Sandra J. Gardner, Carolyn Moorlag, Brynn Dooley, Nan-Xing Hu
-
Patent number: 8506694Abstract: A phase separation ink including at least one crystallizable component that crystallizes as it cools from a first ink jetting temperature to a second lower temperature; at least one amorphous component comprising a material that remains amorphous at the second temperature; an optional colorant; wherein the at least one crystallizable component and the at least one amorphous component are in a molten, single phase state at the first ink jetting temperature; wherein at the second temperature, the phase separation ink comprises a crystalline phase comprising the at least one crystallizable component and an amorphous phase comprising the at least one amorphous component; wherein the amorphous phase of the at least one phase separation ink substantially penetrates into the final image receiving substrate and the crystalline phase of the at least one phase separation ink substantially remains on the surface of the final image receiving substrate.Type: GrantFiled: April 27, 2011Date of Patent: August 13, 2013Assignee: Xerox CorporationInventors: Peter G. Odell, Rina Carlini, Sandra J. Gardner, Jennifer L. Belelie, Paul McConville, Kentaro Morimitsu, Hadi K. Mahabadi, Stephan V. Drappel
-
Patent number: 8509669Abstract: The present teachings disclose a surface coating. The surface coating includes a fluoroplastic having dispersed therein aerogel particles wherein the aerogel particles comprise from about 0.1 weight percent to about 25 weight percent of the surface coating. The surface coating is useful as an out layer for fuser members.Type: GrantFiled: March 22, 2011Date of Patent: August 13, 2013Assignee: Xerox CorporationInventors: Carolyn P. Moorlag, Yu Qi, Nicoleta D. Mihai, Gordon Sisler, Sandra J. Gardner, Qi Zhang, Nan-Xing Hu
-
Publication number: 20130136684Abstract: Various embodiments provide materials and methods for forming a graphene product by vacuum induction heating expandable graphite. The graphene product can include graphene nano-sheets with high purity and uniform thickness. The graphene nano-sheets can contain carbon of more than about 99% by weight. The graphene nano-sheets can be exfoliated or dispersed within a matrix of a semiconducting polymer to form a graphene-containing composite.Type: ApplicationFiled: November 29, 2011Publication date: May 30, 2013Applicant: XEROX CORPORATIONInventors: Yiliang Wu, Sandra J. Gardner
-
Publication number: 20130115380Abstract: Various embodiments provide materials and methods for forming a fluoroplastic coating layer from a powder mixture including a leveling agent and/or a transient binder material to improve the powder coating quality, wherein the powder mixture can further include a plurality of fluoroplastic powder and a plurality of aerogel particles.Type: ApplicationFiled: November 3, 2011Publication date: May 9, 2013Applicant: XEROX CORPORATIONInventors: Qi Zhang, Yu Qi, Sandra J. Gardner, Carolyn Moorlag, Brynn Dooley, Nan-Xing Hu
-
Publication number: 20130029034Abstract: A process for producing silver nanoparticles includes receiving a first mixture comprising a silver salt, an organoamine, a first solvent, and a second solvent; and reacting the first mixture with a reducing agent solution to form organoamine-stabilized silver nanoparticles. The polarity index of the first solvent is less than 3.0, and the polarity index of the second solvent is higher than 3.0. The nanoparticles are more dispersible or soluble in the first solvent.Type: ApplicationFiled: July 28, 2011Publication date: January 31, 2013Applicant: Xerox CorporationInventors: Ping Liu, Yiliang Wu, Sandra J. Gardner, Nan-Xing Hu, Anthony James Wigglesworth
-
Publication number: 20120274713Abstract: A phase separation ink including at least one crystallizable component that crystallizes as it cools from a first ink jetting temperature to a second lower temperature; at least one amorphous component comprising a material that remains amorphous at the second temperature; an optional colorant; wherein the at least one crystallizable component and the at least one amorphous component are in a molten, single phase state at the first ink jetting temperature; wherein at the second temperature, the phase separation ink comprises a crystalline phase comprising the at least one crystallizable component and an amorphous phase comprising the at least one amorphous component; wherein the amorphous phase of the at least one phase separation ink substantially penetrates into the final image receiving substrate and the crystalline phase of the at least one phase separation ink substantially remains on the surface of the final image receiving substrate.Type: ApplicationFiled: April 27, 2011Publication date: November 1, 2012Applicant: Xerox CorporationInventors: Peter G. Odell, Rina Carlini, Sandra J. Gardner, Jennifer L. Belelie, Paul McConville, Kentaro Morimitsu, Hadi K. Mahabadi, Stephan V. Drappel
-
Publication number: 20120274716Abstract: A process including disposing at least one phase separation ink in an imagewise fashion onto a final image receiving substrate to form an ink image, wherein disposing is at a first temperature at which the at least one phase separation ink is in a molten, unseparated state; cooling the ink image to a second temperature sufficient to initiate crystallization of at least one component of the at least one phase separation ink, wherein at the second temperature the at least one phase separation ink comprises a crystalline phase and an amorphous phase; wherein the amorphous phase of the at least one phase separation ink substantially penetrates into the final image receiving substrate; and wherein the crystalline phase of the at least one phase separation ink substantially remains on the surface of the final image receiving substrate; applying pressure to the ink image on the final image receiving substrate; and allowing the ink to complete crystallization.Type: ApplicationFiled: April 27, 2011Publication date: November 1, 2012Applicant: Xerox CorporationInventors: Paul McConville, Joanne L. Lee, Peter G. Odell, Sandra J. Gardner
-
Publication number: 20120261648Abstract: An electronic device, such as a thin-film transistor, includes a semiconducting layer formed from a semiconductor composition. The semiconductor composition comprises a polymer binder and a small molecule semiconductor. The small molecule semiconductor in the semiconducting layer has a crystallite size of less than 100 nanometers. Devices formed from the composition exhibit high mobility and excellent stability.Type: ApplicationFiled: April 18, 2011Publication date: October 18, 2012Applicant: Xerox CorporationInventors: Yiliang Wu, Sandra J. Gardner, Anthony James Wigglesworth, Ping Liu, Nan-Xing Hu
-
Patent number: 8287637Abstract: Core-shell nanoscale pigment particles include a core organic pigment composition including nanoscale particles of organic pigments, and a shell layer of surface-deposited silica, where the organic pigment particles are selected from azo-type pigment particles, azo laked pigment particles, quinacridone pigment particles, phthalocyanine pigment particles, and mixtures thereof. The core-shell nanoscale pigment particles can also include an organic primer layer covering the core and located between the core and the shell layer. The core-shell nanoscale pigment particles can be made by preparing a core composition including nanoparticles of organic pigments, and encapsulating the core with shell layer of surface-deposited silica and an optional organic primer layer located between the core and the shell layer.Type: GrantFiled: March 25, 2009Date of Patent: October 16, 2012Assignee: Xerox CorporationInventors: Rina Carlini, Michelle N. Chretien, Sandra J. Gardner